KR20180048257A - Feedback device and method for providing thermal feedback using the same - Google Patents

Abstract

The present invention relates to a feedback device and a method for providing thermal feedback by using the same. The method for providing thermal feedback is performed by a feedback device which outputs thermal feedback by transferring heat, which is generated by a thermoelectric operation including at least one of a heat generation operation and an endothermic operation of a thermoelectric element to which power is applied, to a user through a contact surface touching a body part of the user. The method comprises the steps of: applying operating power to the thermoelectric element for an output of the thermal feedback; confirming the end time of the thermal feedback; applying termination power for termination of the output of the thermal feedback to the thermoelectric element so as to increase a speed in which the temperature of the contact surface changed according to the output of the thermal feedback is increased to reach an initial temperature which is a temperature before the thermal feedback starts to be outputted, for a predetermined time from the time of the termination of the thermal feedback; and stopping the application of the termination power after the predetermined time has elapsed.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a feedback device and a thermal feedback method using the feedback device.

The present invention relates to a feedback device for outputting thermal feedback and a method for providing thermal feedback using the feedback device.

Recently, as technology for virtual reality (VR) or augmented reality (AR) has been developed, demand for providing feedback through various senses in order to increase user engagement with contents is increasing. Particularly, at the Consumer Electronics Show (CES) in 2016, virtual reality technology was introduced as one of promising technologies for the future. In parallel with this trend, research is being actively carried out to provide a user experience for all human senses including smell and tactile sensation in the future, away from the user experience (UX: User experience) mainly limited to visual and auditory sense.

Thermoelement (TE) is a device that generates an exothermic reaction or an endothermic reaction by receiving electric energy by a Peltier effect, and has been expected to be used for providing thermal feedback to a user. However, The application of the thermoelectric element has been limited since it is difficult to adhere to the body part of the user.

However, recently, development of a flexible thermoelement (FTE) has come to a successful stage, and it is expected to overcome the problems of a conventional thermoelectric device and to transmit thermal feedback effectively to a user.

An aspect of the present invention is to provide a feedback device that provides thermal feedback to a user and a method of providing thermal feedback using the feedback device.

It is another object of the present invention to provide a method of providing thermal feedback that improves the degree of perception of a user with respect to thermal feedback.

It is still another object of the present invention to provide a method of providing thermal feedback that reduces a user's time-of-experience with thermal feedback.

It is still another object of the present invention to provide a method of providing thermal feedback that shortens the output end time of thermal feedback.

It is to be understood that the present invention is not limited to the above-described embodiments and that various changes and modifications may be made without departing from the spirit and scope of the present invention as defined by the following claims .

According to an aspect of the present invention, heat generated by a thermoelectric operation including at least one of a heat generating operation and a heat absorbing operation of a thermoelectric element to which power is supplied is transmitted to the user through a contact surface contacting the body part of the user, The method comprising the steps of: applying operating power to the thermoelectric element for outputting the thermal feedback; Confirming the end point of the thermal feedback; So that the speed at which the temperature of the contact surface changed in accordance with the output of the thermal feedback reaches an initial temperature which is a temperature before the start of the output of the thermal feedback is increased for a predetermined time from the end of the thermal feedback, Applying a termination power for output termination of thermal feedback; And stopping the application of the end power after the predetermined time has elapsed.

It is to be understood that the solution of the problem of the present invention is not limited to the above-mentioned solutions, and the solutions which are not mentioned can be clearly understood by those skilled in the art to which the present invention belongs It will be possible.

According to the present invention, it is possible to provide thermal feedback to the user.

Further, according to the present invention, the user's perception of thermal feedback can be improved.

Further, according to the present invention, it is possible to reduce a user's bodily sensation time with respect to thermal feedback.

Further, according to the present invention, it is possible to shorten the output end time of the thermal feedback.

The effects of the present invention are not limited to the above-mentioned effects, and the effects not mentioned can be clearly understood by those skilled in the art from the present specification and the accompanying drawings.

1 is a block diagram of a configuration of a thermal experience providing system 1000 according to an embodiment of the present invention.
2 is a block diagram of a configuration of a content reproducing device 1200 according to an embodiment of the present invention.
3 is a block diagram of a configuration of an audiovisual device 1400 according to an embodiment of the present invention.
4 is a block diagram of a feedback device 1600 according to an embodiment of the present invention.
5 is a block diagram of a configuration of a thermal output module 1640 according to an embodiment of the present invention.
6 is a diagram of one embodiment of a thermal output module 1640 according to an embodiment of the present invention.
7 is a diagram of another embodiment of a thermal output module 1640 according to an embodiment of the present invention.
8 is a diagram of another embodiment of a thermal output module 1640 according to an embodiment of the present invention.
Figure 9 is another diagram of another embodiment of a thermal output module 1640 in accordance with an embodiment of the present invention.
10 is a diagram illustrating a heating operation for providing warm feedback according to an embodiment of the present invention.
11 is a graph showing the strength of the warm feedback according to the embodiment of the present invention.
12 is a diagram illustrating a heating operation for providing cold feedback according to an embodiment of the present invention.
13 is a graph showing the strength of cold feedback according to an embodiment of the present invention.
14 is a graph showing the strength of warm / cool feedback using voltage control according to an embodiment of the present invention.
FIG. 15 is a graph illustrating the control of the warm / cool feedback strength through the operation control of each thermo couple group 1644 according to the embodiment of the present invention.
16 is a graph relating to the control of the warm / cool feedback strength through power supply timing control according to the embodiment of the present invention.
17 is a diagram illustrating a voltage regulating thermal grill operation according to an embodiment of the present invention.
18 is a table of voltages for providing neutral column grill feedback in a voltage regulation scheme according to an embodiment of the present invention.
19 is a schematic diagram of an example of an electric signal for a heat transfer operation according to an embodiment of the present invention.
FIG. 20 is a view illustrating a thermal movement operation according to FIG. 19 according to an embodiment of the present invention.
21 is a schematic view of another example of an electric signal for a heat movement operation according to an embodiment of the present invention.
FIG. 22 is a view showing a thermal movement operation according to FIG. 21 according to an embodiment of the present invention.
23 is a schematic diagram of another example of an electric signal for a heat transfer operation according to an embodiment of the present invention.
FIG. 24 is a diagram illustrating a heat transfer operation according to an embodiment of the present invention.
25 is a schematic diagram of yet another example of an electrical signal for a thermal movement operation according to an embodiment of the present invention.
FIG. 26 is a diagram illustrating a thermal movement operation according to FIG. 25 according to an embodiment of the present invention.
Fig. 27 is a diagram for explaining a change in applied voltage for generating an over-response of thermal feedback according to an embodiment of the present invention and a temperature change according to the over-response. Fig.
28 is a diagram for explaining a change in applied voltage and a temperature change according to the over-response in order to generate an over-response of thermal feedback according to another embodiment of the present invention.
29 is a diagram for explaining a change in applied voltage and a temperature change according to the over-response in order to generate an over-response of thermal feedback according to another embodiment of the present invention.
FIG. 30 is a diagram for explaining a change in applied voltage and a temperature change according to the over-response in order to generate the over-response of the cold feedback according to the embodiment of the present invention.
Figure 31 is a flow chart of a method for perceptually improving thermal feedback according to an embodiment of the present invention.
32 is a graph showing changes in applied voltage and temperature at the contact surface according to the method of improving the thermal feedback in the case where the thermal feedback of the same intensity is output in the first thermocouple group and the second thermocouple group according to the embodiment of the present invention Fig.
Fig. 33 is a graph showing changes in applied voltage and temperature at the contact surface according to the method for improving the thermal feedback in the case where the thermal feedback of the same intensity is output in the first thermocouple group and the second thermocouple group according to another embodiment of the present invention Fig.
FIG. 34 is a diagram showing a temperature change at a contact surface according to a method of improving thermal feedback in a case where high-intensity thermal feedback is outputted to a second thermal pair group from a first thermo couple group according to an embodiment of the present invention .
FIG. 35 is a view showing a temperature change at a contact surface according to a method for improving the thermal feedback in the case where low-intensity thermal feedback is outputted to the second thermal pair group from the first thermo couple group according to the embodiment of the present invention .
36 is a graph showing a change in temperature at the contact surface according to the method for improving the perception of thermal feedback when warm feedback is output to the first thermocouple group according to the embodiment of the present invention and cold feedback is output from the second thermal pair group Fig.
37 is a graph showing a change in temperature at a contact surface according to a method for improving the perception of thermal feedback when cool feedback is output to the first thermocouple group according to the embodiment of the present invention and warm feedback is output from the second thermal pair group Fig.
38 is a graph showing a change in applied voltage and a change in temperature at the contact surface according to a method for improving the thermal feedback in the case where the cold feedback is output in the first thermocouple group and the second thermocouple group according to the embodiment of the present invention FIG.
Figs. 39 to 41 are diagrams showing temperature changes at the contact surface according to the voltage application time in the first thermocouple group and the second thermocouple group in the method for improving the perception of thermal feedback according to the embodiment of the present invention .
FIG. 42 is a flowchart illustrating a method of reducing the response time of thermal feedback according to an embodiment of the present invention. FIG.
FIG. 43 is a graph showing a change in applied voltage and a change in temperature at a contact surface according to a method for shortening the response time of thermal feedback when the warm-up feedback is output in the thermocouple group according to the embodiment of the present invention.
FIG. 44 is a graph showing a change in applied voltage and a change in temperature at a contact surface according to a method for shortening the response time of thermal feedback when the warm-up feedback is output in the thermocouple group according to another embodiment of the present invention.
FIG. 45 is a diagram showing a change in applied voltage and a temperature change in a contact surface according to a method of shortening the response time of thermal feedback when the warm-up feedback is output in the thermocouple group according to another embodiment of the present invention.
FIG. 46 is a diagram showing a change in applied voltage and a change in temperature at a contact surface according to a method of shortening the response time of thermal feedback when cold feedback is output in a thermo couple group according to an embodiment of the present invention. FIG.
FIG. 47 is a graph showing changes in applied voltage and temperature at a contact surface according to a method of reducing the response time of thermal feedback when thermal grill feedback is output in the thermocouple group according to the embodiment of the present invention. FIG.
Figure 48 is a diagram of a thermal feedback output operation according to an embodiment of the present invention.
FIG. 49 is a flowchart of a method for providing a thermal experience considering a reduced response time according to an embodiment of the present invention. FIG.
50 is a diagram illustrating a thermal feedback output operation of the thermal experience providing method in consideration of the reduced response time according to the embodiment of the present invention.
51 is a flowchart of a method for providing a thermal experience in consideration of a shortened response time according to another embodiment of the present invention.
52 is a flowchart illustrating a method of reducing the end time of thermal feedback according to the embodiment of the present invention.
FIG. 53 is a diagram showing a change in applied voltage and a temperature change in a contact surface according to a method of shortening a termination time of thermal feedback in the case of outputting warm feedback in a thermocouple group according to an embodiment of the present invention.
FIG. 54 is a diagram illustrating a change in applied voltage and a temperature change in a contact surface according to a method of shortening the termination time of thermal feedback when the warm-up feedback is output in the thermocouple group according to another embodiment of the present invention.
FIG. 55 is a diagram illustrating a change in applied voltage and a temperature change in a contact surface according to a method for shortening a termination time of thermal feedback in the case of outputting warm feedback in a thermocouple group according to another embodiment of the present invention. FIG.
FIG. 56 is a graph showing a change in applied voltage and a change in temperature at a contact surface according to a method for shortening a termination time of thermal feedback when cold feedback is output in a thermocouple group according to an embodiment of the present invention. FIG.
FIG. 57 is a graph showing a change in applied voltage and a temperature change at a contact surface according to a method of shortening the end time of thermal feedback when thermal grill feedback is output in the thermocouple group according to the embodiment of the present invention. FIG.
FIG. 58 is a diagram showing the applied voltage and the temperature change at the contact surface when the warm feedback is continuously output in the thermocouple group according to the embodiment of the present invention. FIG.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to or limited by the embodiments. In addition, the same reference numerals shown in the drawings denote the same members.

1. Thermal experience providing system

Hereinafter, a thermal experience providing system 1000 according to an embodiment of the present invention will be described.

1.1. Overview of Thermal Experience System

A thermal experience providing system 1000 according to an embodiment of the present invention is a system that allows a user to experience Thermal Experiences (TX). In particular, the thermal experience providing system 1000 may allow the user to experience thermal experiences by outputting thermal feedback as part of the presentation style of the content when reproducing the multimedia content.

Here, thermal feedback is a kind of thermal stimulus that stimulates a thermal sensation organ distributed mainly in the user's body to allow the user to feel a thermal sensation. In this specification, thermal feedback is applied to all thermal stimuli Should be construed to be inclusive.

Representative examples of thermal feedback include warm feedback and cold feedback. The warm feedback means applying a warmth to a hot spot distributed on the skin so that the user feels warm and the cold feedback is to apply a cold heat to a cold spot distributed on the skin so that the user feels cold feeling it means.

Here, since the column is a physical quantity expressed in a positive scalar form, the expression 'apply cold heat' or 'transmit cold heat' may not be strictly expressed from the physical viewpoint, but in the present specification, And the phenomenon in which the opposite phenomenon occurs, that is, the phenomenon of absorbing heat, is expressed as cold heat is applied or transmitted.

In addition, thermal feedback in this specification may further include thermal grill feedback in addition to warm feedback and cold feedback. When the heat and the cold are given at the same time, the user perceives it as a sensation instead of recognizing it as individual warmth and cold sensation. This sensation is referred to as a so-called thermal grill (TGI). That is, the thermal grill feedback means thermal feedback that applies a combination of heat and cold heat, and can be provided mainly by simultaneously outputting warm feedback and cold feedback. Thermal grill feedback may also be referred to as thermal sensory feedback in terms of providing a sensation close to intuition. A more detailed description of the thermal grill feedback will be provided later.

Here, the multimedia contents may include various kinds of contents including a moving picture, a game, a virtual reality application, an augmented reality application, and the like.

In general, the multimedia contents are provided to users in accordance with an audiovisual expression style mainly based on image and voice, but in the present invention, thermal expression based on the above-described thermal feedback can be included as an essential expression style.

On the other hand, 'playback' of multimedia contents should be interpreted as a comprehensive meaning including all operations of executing multimedia contents to provide to users. Therefore, the term " reproduction " in the present specification should be construed to include not only an operation of reproducing a moving picture through a media player but also an operation of executing a game program, an educational program, a virtual reality application, an augmented reality application, .

1.2. Configuration of a thermal experience system

1 is a block diagram of a configuration of a thermal experience providing system 1000 according to an embodiment of the present invention.

Referring to FIG. 1, a thermal experience providing system 1000 may include a content reproducing device 1200, an audiovisual device 1400, and a feedback device 1600.

Here, the content reproduction device 1200 reproduces the multimedia content, and the audiovisual device 1400 outputs a video or audio corresponding to the content reproduction, and the feedback device 1600 can output thermal feedback in accordance with the reproduction of the content.

For example, the content playback device 1200 may decode video content including video data / audio data / thermal feedback data to provide video / audio signal / thermal feedback to the audiovisual device 1400 and the feedback device 1600, respectively Can be conveyed as a signal related to. The audiovisual device 1400 receives the video signal and the audio signal, outputs the video and audio, and the feedback device 1600 receives the thermal feedback signal and outputs thermal feedback.

Hereinafter, each component of the thermal experience providing system 1000 will be described in more detail.

1.2.1. The content playback device

The content reproduction device 1200 reproduces the multimedia content.

2 is a block diagram of a configuration of a content reproducing device 1200 according to an embodiment of the present invention.

2, the content reproduction device 1200 may include a communication module 1220, a memory 1240, and a controller 1260.

The communication module 1220 can perform communication with an external device. The content reproduction device 1200 can transmit and receive data to and from the audiovisual device 1400 and the feedback device 1600 through the communication module 1220. [ For example, the content playback device 1200 may communicate an A / V signal to the audiovisual device 1400 via the communication module 1220 or a thermal feedback signal to the feedback device 1600. In addition, the content reproduction device 1200 may access the Internet through the communication module 1220 to download the multimedia content.

The communication module 1220 is divided into a wired type and a wireless type. Since the wired type and the wireless type have advantages and disadvantages, the content reproduction device 1200 may be provided with a wired type and a wireless type at the same time.

In the case of the wired type, a local area network (LAN) or a universal serial bus (USB) communication is a typical example, and other methods are possible.

In the case of the wireless type, a wireless personal area network (WPAN) based communication method such as Bluetooth or Zigbee may be used. However, since the wireless communication protocol is not limited to this, the wireless communication module may use a WLAN (Wireless Local Area Network) communication method such as Wi-Fi or other known communication method.

On the other hand, it is also possible to use a proprietary protocol developed by a game machine or a console manufacturer as a wired / wireless communication protocol.

The memory 1240 may store various types of information. In the memory 1240, various data may be temporarily or semi-permanently stored. Examples of the memory 1240 include a hard disk drive (HDD), a solid state drive (SSD), a flash memory, a ROM (Read-Only Memory), a RAM This can be. The memory 1240 may be provided in a form embedded in the content reproducing device 1200 or in a detachable form.

The memory 1240 stores various data necessary for the operation of the content reproduction device 1200 including an operating system (OS) for operating the content reproduction device 1200 or a content to be executed in the content reproduction device 1200 .

The controller 1260 can control the overall operation of the content reproduction device 1200. [ For example, the controller 1260 may load the multimedia content from the memory 1240 and reproduce it, or may generate a control signal for controlling the video, audio, or thermal feedback output in accordance with the content playback.

The controller 1260 may be implemented as a CPU (Central Processing Unit) or the like according to hardware, software, or a combination thereof. It can be provided in the form of an electronic circuit that performs a control function by processing an electrical signal in a hardware manner and can be provided in a form of a program or a code for driving a hardware circuit in software.

1.2.2. Audiovisual device

The audiovisual device 1400 can output video and audio according to the multimedia playback.

3 is a block diagram of a configuration of an audiovisual device 1400 according to an embodiment of the present invention.

3, the audiovisual device 1400 may include a communication module 1420 and an A / V module 1440. [

The communication module 1420 can perform communication with an external device. The audiovisual device 1400 can send and receive data to and from the content reproduction device 1200 via the communication module 1420. [ For example, the audiovisual device 1400 may receive the A / V signal from the content reproduction device 1200 or the feedback device 1600 via the communication module 1420.

The communication module 1420 of the audiovisual device 1400 may be provided similar to the communication module 1220 of the content reproduction device 1200, and thus a detailed description thereof will be omitted.

The A / V module 1440 may provide a video or audio to the user. To this end, the A / V module 1440 may include a video module 1442 and a voice module 1444.

The image module 1442 is generally provided in a display form and can output an image according to a video signal received from the content reproducing device 1200 or the feedback device 1600. [ The audio module 1444 is generally provided in the form of a speaker and can output audio according to the audio signal received from the content reproducing device 1200 or the feedback device 1600. [

1.2.3. Feedback device

Feedback device 1600 may output thermal feedback as a result of multimedia playback.

4 is a block diagram of a feedback device 1600 according to an embodiment of the present invention.

4, the feedback device 1600 may include a communication module 1620 and a thermal output module 1640.

In accordance with an embodiment of the present invention, the feedback controller 1648 may be separate from the thermal output module 1640 and may be included within the thermal output module 1640. If the feedback controller 1648 is located outside the thermal output module 1640, a feedback controller separate from the feedback controller 1648 may be provided in the thermal output module 1640. In this specification, for convenience of explanation, it will be presumed that the feedback controller 1648 is included in the thermal output module 1640.

The communication module 1620 can perform communication with an external device. The feedback device 1600 can send and receive data to and from the content reproduction device 1200 via the communication module 1620. [ For example, the feedback device 1600 may receive thermal feedback data from the content playback device 1200 via the communication module 1620. As another example, the feedback device 1600 may transmit voice and / or video signals to the audiovisual device 1400 via the communication module 1620.

The thermal output module 1640 may output thermal feedback. Thermal feedback is performed by applying a heat or cold heat generated on the thermoelectric element to the contact surface 1641 in response to application of power by a contact surface 1641 contacting the user's body and a thermoelectric element connected to the contact surface 1641, Lt; RTI ID = 0.0 > a < / RTI >

The thermal output module 1640 may perform thermal or thermal absorption or thermal grating operations along with thermal feedback data received from the content reproduction device 1200 via the communication module 1620 to output thermal feedback, Thermal experience can be experienced by the output thermal feedback.

A more detailed description of the specific configuration and operation of the thermal output module 1640 will be given later.

2. Heat output module

Hereinafter, a thermal output module 1640 according to an embodiment of the present invention will be described.

2.1. Overview of the Thermal Output Module

The heat output module 1640 may perform thermal operation, heat absorption operation, or thermal grill operation, thereby outputting thermal feedback that conveys heat and cold to the user. The thermal output module 1640 mounted on the feedback device 1600 in the thermal experience providing system 1000 outputs thermal feedback to the thermal experience providing system 1000 when the feedback device 1600 receives the thermal feedback signal. Provide a thermal experience.

The heat output module 1640 may use a thermoelectric element such as a Peltier element to perform the heat generating operation, the heat absorbing operation, or the thermal grill operation.

The Peltier effect is a thermoelectric phenomenon discovered by Jean Peltier in 1834. When a different kind of metal is bonded and then the current flows, an exothermic reaction occurs on one side and a cooling reaction occurs on the other side This means the phenomenon that occurs. Peltier devices are devices that produce such a Peltier effect. Peltier devices are initially made of dissimilar metal assemblies such as bismuth and antimony, but in recent years they have been manufactured in such a way that NP semiconductors are arranged between two metal plates to have higher thermoelectric efficiency .

The Peltier device is able to instantly induce heat and endothermic currents on both metal plates when current is applied and to convert heat and endothermic currents according to the current direction and to adjust the heat and endothermic degree relatively precisely according to the amount of current, It is suitable to be used for heat generation operation and heat absorption operation. In particular, as a flexible thermoelectric element has been developed, it is possible to manufacture the flexible thermoelectric element in a form that can be easily contacted to the user's body, thereby increasing the commercial availability of the feedback device 1600.

Accordingly, the heat output module 1640 can perform the heat generating operation or the heat absorbing operation as electricity is applied to the thermoelectric element. Physically, an exothermic reaction and an endothermic reaction occur at the same time in a thermoelectric element to which electricity is applied. However, in the present specification, heat generated by the surface of the heat output module 1640, which is in contact with the user's body, Is defined as an endothermic operation. For example, a thermoelectric element can be constructed by disposing an N-P semiconductor on a substrate 1642, where heat is generated at one side and heat is absorbed at the other side. Here, if the side facing the user's body is the front side and the opposite side is the back side, heat generation at the front face and heat absorption at the rear face are defined as performing the heat generation operation with respect to the heat output module 1640, and conversely, Endothermic reaction, and heat generation at the backside can be defined as performing an endothermic operation.

Since the thermoelectric effect is induced by the electric charge flowing in the thermoelectric element, it is possible to describe the electric current inducing the heat generating operation or the heat absorbing operation of the heat output module 1640 from the viewpoint of current. However, It will be described in terms of voltage. However, this is merely for the sake of convenience of description, and it is understood that a person having a general knowledge in the technical field to which the present invention belongs (hereinafter referred to as a "person skilled in the art" It should be noted that the present invention should not be construed as limited in terms of the voltage, since it is not necessary to cause accidents.

2.2. Configuration of the heat output module

5 is a block diagram of a configuration of a thermal output module 1640 according to an embodiment of the present invention.

5, the thermal output module 1640 includes a contact surface 1641, a substrate 1642, a thermocouple array 1643 disposed on the substrate 1642, a power supply terminal 1640 for applying power to the thermal output module 1640, (1647) and a feedback controller (1645).

The contact surface 1641 directly contacts the user's body to transmit heat or cold heat generated by the heat output module 1640 to the user's skin. In other words, the portion of the outer surface of the feedback device 1600 that directly contacts the user's body may be the contact surface 1641. For example, the contact surface 1641 may be formed in the grip portion of the feedback device 1600 casing held by the user.

The contact surface 1641 may be provided as a layer that is directly or indirectly attached to the outer surface of the thermocouple array 1643 that performs the heat generating operation or the heat absorbing operation in the heat output module 1640 (the body direction of the user). This type of contact surface 1641 may be disposed between the thermocouple array 1643 and the skin of the user to perform heat transfer. To this end, the contact surface 1641 may be provided with a material having a high thermal conductivity so that heat transfer from the thermocouple array 1643 to the user's body is well performed. The layer-type contact surface 1641 also prevents direct exposure of the thermocouple array 1643 to the outside, thereby protecting the thermocouple array 1643 from external impacts.

In the above description, the contact surfaces 1641 are disposed on the outer surface of the thermocouple array 1643. However, the outer surface of the thermocouple array 1643 itself may be the contact surface 1641 . In other words, some or all of the front surface of the thermocouple array 1643 can be the contact surface 1641.

The substrate 1642 serves to support the unit thermocouples 1645 and is provided as an insulating material. For example, ceramic can be selected as the material of the substrate 1642. The substrate 1642 may be of a flat plate shape, but it is not necessarily so.

Substrate 1642 may be provided as a flexible material so as to have flexibility generally available to various types of feedback devices 1600 having contact surfaces 1641 of various shapes. For example, in a feedback controller 1600 of a gaming controller type, a portion where a user grasps a gaming controller with the palm of a hand is a curved surface. In order to use the thermal output module 1640 in such a curved portion, 1640) may be important to have flexibility. An example of the flexible material used for the substrate 1642 for this purpose is glass fiber or flexible plastic.

Thermocouple array 1643 is comprised of a plurality of unit thermocouples 1645 disposed on a substrate 1642. As the unit thermocouples 1645, different pairs of metals (for example, bismuth and antimony) can be used, but mainly N-type and P-type semiconductor pairs can be used.

In the unit thermocouples 1645, the semiconductor pairs are electrically connected at one end and electrically connected to the unit thermocouples 1645 at the other end. The electrical connection between the semiconductor pair 1645a and 1646b or the adjacent semiconductor is performed by a conductor member 1646 disposed on the substrate 1642. [ The conductor member 1646 may be a wire or an electrode such as copper or silver.

The unit thermocouples 1645 may be electrically connected in series and the unit thermocouples 1645 connected in series form a thermocouple group 1644 and the thermocouple group 1644 may be a thermocouple array 1643).

The power terminal 1647 may apply power to the thermal output module 1640. The thermocouple array 1643 can generate heat or absorb heat according to the voltage value of the power source applied to the power source terminal 1647 and the direction of the current. More specifically, the power supply terminals 1647 can be connected to two thermocouple groups 1644 in two. Therefore, when there are a plurality of thermocouple groups 1644, two power terminals 1647 may be arranged for each thermocouple group 1644. [ According to this connection method, either the voltage value or the current direction is individually controlled for each of the thermocouple groups 1644, and it is possible to control whether heat generation or endothermic generation is performed, and the degree of heat generation or endothermic generation can be controlled.

As will be described later, the power supply terminal 1647 receives the electrical signal output by the feedback controller 1645, and as a result, the feedback controller 1648 adjusts the direction or size of the electrical signal, The heat generation operation and the heat absorption operation can be controlled. In the case where there are a plurality of thermocouple groups 1644, it is also possible to individually control the electric signals applied to the respective power terminals 1647 and individually control the thermocouple groups 1644.

The feedback controller 1648 may apply an electrical signal to the thermocouple array 1643 via the power terminal 1647. [ Specifically, the feedback controller 1648 receives information about thermal feedback from the controller 1260 of the content reproduction device 1200 via the communication module 1620 and analyzes the information about the thermal feedback to determine the type and intensity of the thermal feedback And generates an electric signal according to the determination result and applies the electric signal to the power terminal 1647 so that the thermocouple array 1643 outputs thermal feedback.

To this end, the feedback controller 1648 performs arithmetic operation and processing of various information, and outputs an electric signal to the thermocouple array 1643 according to the processing result to control the operation of the thermocouple array 1643. Thus, the feedback controller 1648 may be implemented in a computer or similar device depending on the hardware, software, or combination thereof. In hardware, the feedback controller 1648 may be provided in the form of an electronic circuit that processes an electrical signal to perform a control function, and may be provided in a form of a program or a code for driving a hardware circuit in software.

The feedback device 1600 may also be provided with a plurality of the above-described thermal output modules 1640. For example, if the feedback device 1600 has a plurality of grips, a thermal output module 1640 may be mounted for each grip of the feedback device 1600. [ If a feedback device 1600 is provided with a plurality of thermal output modules 1640, a feedback controller may be provided for each thermal output module 1640 in the feedback device 1600, A single feedback controller may be provided. In addition, when a plurality of feedback devices 1600 are provided in the thermal experiencing system 1000, one or more thermal output modules 1640 may be disposed in each feedback device 1600.

2.3. Type of heat output module

Some exemplary aspects of the thermal output module 1640 will be described based on the description of the configuration of the thermal output module 1640 described above.

6 is a diagram of one embodiment of a thermal output module 1640 according to an embodiment of the present invention.

Referring to FIG. 6, a pair of substrates 1642 are provided to face each other in one form of the heat output module 1640. A contact surface 1641 is located outside the substrate 1642 of one of the two substrates 1642 so that the heat generated by the heat output module 1640 can be transmitted to the user's body. When the substrate 1642 is used as the flexible substrate 1642, the heat output module 1640 can be provided with flexibility.

A plurality of unit thermocouples 1645 are positioned between the substrates 1642. Each unit thermocouple pair 1645 is composed of a semiconductor pair of an N type semiconductor and a P type semiconductor. In each of the unit thermocouples 1645, the N-type semiconductor and the P-type semiconductor are electrically connected to each other by a conductor member 1646 at one end. The other ends of the N-type semiconductor and the P-type semiconductor of the arbitrary thermoelectric couple 1645 are electrically connected to each other by the other end of the P-type semiconductor and the N-type semiconductor of the adjacent thermoelectric couple 1645 and the conductor member 1646 The electrical connection between the unit elements is achieved. Accordingly, the unit connection elements are connected in series to form one thermoelectric couple group 1644. In this embodiment, the entire thermoelectric couple array 1643 is composed of one thermoelectric couple group 1644, and the whole unit thermoelectric couple 1645 is connected in series between the power terminals 1647, so that the thermal output module 1640 The same operation is performed over the entire front surface. That is, when power is supplied to the power terminal 1647 in one direction, the heat output module 1640 performs a heat generation operation, and when the power is applied in the opposite direction, the heat output module 1640 can perform a heat absorption operation.

7 is a diagram of another embodiment of a thermal output module 1640 according to an embodiment of the present invention.

Referring to FIG. 7, another form of the thermal output module 1640 is similar to the one described above. In this embodiment, however, the thermocouple array 1643 has a plurality of thermocouple groups 1644 and each thermocouple group 1644 is connected to the respective power terminals 1647, Control is possible. For example, in FIG. 7, currents in different directions are applied to the first thermocouple group 1644 and the second thermocouple group 1644 so that the first thermocouple group 1644 performs a heat generating operation Quot; forward "), and the second thermocouples group 1644 may perform an endothermic operation (the current direction at this time is referred to as " reverse direction "). A different voltage value may be applied to the power terminal 1647 of the first thermocouple group 1644 and the power terminal 1647 of the second thermocouple group 1644 to generate the first thermocouple group 1644, And the second thermocouple group 1644 may perform a heat generating operation or a heat absorbing operation to a degree different from each other.

In FIG. 7, the thermoelectric couple groups 1644 are arranged in a one-dimensional array in the thermoelectric couple array 1643. Alternatively, the thermoelectric couple groups 1644 may be arranged in a two-dimensional array. 8 is a diagram of another embodiment of a thermal output module 1640 according to an embodiment of the present invention. Referring to FIG. 8, using the thermocouple group 1644 arranged in a two-dimensional array, it is possible to more finely control the motion of each region.

In the meantime, although the above-described embodiments of the heat output module 1640 have been described as using a pair of opposed substrates 1642, it is also possible to use a single substrate 1642 instead. Figure 9 is another diagram of another embodiment of a thermal output module 1640 in accordance with an embodiment of the present invention. 9, a unit thermoelectric couple 1645 and a conductor member 1646 are embedded in a single substrate 1642 in a single substrate 1642. It is possible to use glass fiber or the like as the substrate 1642 for this purpose. A single substrate 1642 of this type may be used to provide greater flexibility to the thermal output module 1640.

Various aspects of the thermal output module 1640 described above may be combined or modified within the scope of what is known to those skilled in the art. For example, in each form of the thermal output module 1640, the contact surface 1641 is formed on the front surface of the thermal output module 1640 as a separate layer from the thermal output module 1640, May be the contact surface 1641 itself. For example, in one form of the above-described heat output module 1640, the outer surface of one substrate 1642 can be the contact surface 1641.

2.4. Thermal feedback output

Hereinafter, the thermal feedback output operation performed by the feedback device 1600 will be described.

The feedback device 1600 may output thermal feedback as the thermal output module 1640 performs a heating operation or an endothermic operation. Thermal feedback may include warm feedback, cold feedback, and thermal grill feedback.

Here, the warm feedback can be output by the heat output module 1640 performing the heat generation operation, and the cold feedback can be output by performing the heat absorption operation. Also, the thermal grill feedback can be output through a thermal grill operation in which a heat generating operation and a heat absorbing operation are combined.

On the other hand, the feedback device 1600 can output the above thermal feedback at various intensities. The intensity of the thermal feedback can be adjusted in such a manner that the feedback controller 1648 of the thermal output module 1640 adjusts the magnitude of the voltage applied to the thermocouple array 1643 through the power terminal 1647. [ Here, the method of controlling the magnitude of the voltage includes a method of smoothing the duty signal and finally applying power to the thermoelectric element. That is, adjusting the voltage level by adjusting the duty rate of the duty signal may also be considered to be included in adjusting the voltage level.

Hereinafter, the heat generating operation, the heat absorbing operation and the heat grill operation will be described in more detail.

2.4.1. Heat / heat absorption operation

The feedback device 1600 may perform a heating operation to the thermal output module 1640 to provide warm feedback to the user. Similarly, the heat output module 1640 may perform an endothermic operation to provide cold feedback to the user.

FIG. 10 is a diagram illustrating a heating operation for providing warm feedback according to an embodiment of the present invention, and FIG. 11 is a graph illustrating strength of warm feedback according to an embodiment of the present invention.

10, the heating operation may be performed by inducing an exothermic reaction in the direction of the contact surface 1641 as the feedback controller 1648 applies a forward current to the thermocouple array 1643. Here, when the feedback controller 1648 applies a constant voltage (hereinafter referred to as a "constant voltage") to the thermocouple array 1643, the thermocouple array 1643 starts the heat generating operation. 1641 rise to the saturation temperature with time as shown in Fig. Therefore, the user feels that the user does not feel warm or weak feeling at the beginning of the heat generation operation, feels warmth until the temperature reaches the saturation temperature, and then provides warm feedback corresponding to the saturation temperature after a certain period of time do.

FIG. 12 is a diagram illustrating a heating operation for providing cold feedback according to an embodiment of the present invention, and FIG. 13 is a graph illustrating strength of cold feedback according to an embodiment of the present invention.

12, an endothermic operation may be performed by inducing an endothermic reaction in the direction of the contact surface 1641 as the feedback controller 1648 applies a reverse current to the thermocouple array 1643. Here, when the feedback controller 1648 applies a constant voltage (hereinafter, referred to as a reverse voltage) to the thermocouple array 1643, the thermocouple array 1643 starts the heat absorbing operation, So that the temperature of the gas sensor 1641 rises to the saturation temperature with time as shown in Fig. Therefore, the user feels that the user does not feel cold feeling at the beginning of the heat absorbing operation, feels weak, feels that the cool feeling rises until reaching the saturation temperature, and then receives the cool feeling feedback corresponding to the saturation temperature after a certain time has elapsed do.

On the other hand, when power is applied to a thermoelectric element, in addition to an exothermic reaction and an endothermic reaction occurring on both sides of the thermoelectric element, electric energy is converted into heat energy and heat is generated. Therefore, when a voltage of the same magnitude is applied to the thermocouple array 1643 by changing only the direction of the current, the temperature change amount due to the heat generation operation may be larger than the temperature change amount due to the heat absorption operation. Here, the temperature change amount means a temperature difference between the initial temperature and the saturation temperature in a state in which the thermal output module 1640 is not operated.

Hereinafter, the heat generating operation and the heat absorbing operation performed by the thermoelectric element using electric energy will be collectively referred to as " thermoelectric conversion operation ". In addition, since the thermal grill operation to be described below is also a combined operation of the heat generating operation and the heat absorbing operation, the thermal grill operation can also be interpreted as a kind of 'thermoelectric operation'.

2.4.2. Strength control of heat / heat absorption operation

As described above, when the heat output module 1640 performs the heat generation operation or the heat absorption operation, the feedback controller 1648 controls the heat generation degree or the heat absorption degree of the heat output module 1640 by adjusting the magnitude of the applied voltage . Accordingly, the feedback controller 1648 can adjust the direction of the current to select the type of thermal feedback to provide during the warm feedback and the cold feedback, and adjust the magnitude of the voltage to adjust the strength of the warm feedback or cold feedback.

14 is a graph showing the strength of warm / cool feedback using voltage control according to an embodiment of the present invention.

For example, referring to FIG. 14, the feedback controller 1648 applies a voltage value of five levels in a forward direction or a backward direction so that the feedback device 1600 provides the user with a total of ten strengths of the warmth feedback step 5 and the cold feedback step 5 Thermal feedback can be provided.

In FIG. 14, the warm feedback and the cold feedback are shown to have the same number of strength classes, respectively. However, the number of strength classes of warm feedback and cold feedback must not be the same and may be different from each other.

Here, it is shown that the warm-up feedback and the cold feedback are implemented by changing the current direction using the same-sized voltage value. However, since the magnitude of the voltage value applied for the warm-up feedback and the voltage value applied for the cold feedback Need not be equal to each other.

In particular, when the same voltage is applied to perform the heat generating operation and the heat absorbing operation, the temperature change amount of the warm-up feedback due to the heat generating operation is generally larger than the temperature change amount due to the heat absorbing operation, It is also possible to apply a voltage larger than the applied voltage so as to show the same temperature change amount in the corresponding strength classes.

In the above description, the voltage value applied to the thermal output module 1640 is controlled to control the intensity of the thermal feedback, but the thermal feedback intensity control can be performed in other ways as well.

For example, when the thermocouple array 1643 of the thermal output module 1640 has a plurality of thermocouple groups 1644 that are individually controllable, the feedback controller 1648 controls the operation for each thermocouple group 1644, Can be adjusted.

FIG. 15 is a graph illustrating the control of the warm / cool feedback strength through the operation control of each thermo couple group 1644 according to the embodiment of the present invention. 15, when the thermocouple array 1643 is made up of five thermocouple groups 1644-1, 1644-2, 1644-3, 1644-4, and 1644-5, the feedback controller 1648 is a thermocouple The intensity of the thermal feedback can be adjusted by applying a voltage across all or a portion of the paired group 1644. For example, the feedback controller 1648 may apply a voltage to the entire thermocouple group 1644 to provide the user with the highest intensity thermal feedback, or apply voltage only to the four thermocouple groups 1644, Or by applying a voltage only to three thermocouple groups 1644 to provide the user with thermal feedback of intermediate intensity or by applying voltage only to the two thermocouple groups 1644 to provide the user with thermal feedback Feedback can be provided, or only one thermocouple group 1644 can be energized to provide the user with the lowest intensity thermal feedback.

When the intensity of the thermal feedback is controlled through the voltage application / non-application of the thermocouple group 1644, the feedback controller 1648 controls the thermocouple group 1640 to receive the voltage so that the heat distribution is maximally uniform within the allowable range. (1644). To this end, the feedback controller 1648 applies a voltage to the thermoelectric couple group 1644 in such a form that the number of consecutive thermoelectric couple groups 1644 to which a voltage is applied or thermoelectric couple groups 1644 to which no voltage is applied is minimized Can be determined. Since the table shown in Fig. 15 takes into consideration the uniformity of the heat distribution, it will be more clearly understood by reference thereto.

As another example, it is also possible for the feedback controller 1648 to adjust the intensity of the thermal feedback by controlling the power application timing. Specifically, the feedback controller 1648 may apply power to the thermocouple array 1643 as an electric signal in the form of a duty signal having a duty cycle to adjust the intensity of thermal feedback.

16 is a graph relating to the control of the warm / cool feedback strength through power supply timing control according to the embodiment of the present invention. Referring to FIG. 16, it can be seen that the intensity of the thermal feedback is controlled by adjusting the duty rate of the electric signal.

As described above, by adjusting the intensity of the thermal feedback, it is possible to provide subtle thermal feedback such as strong warmth, weak warmth, strong cold feeling, and weak cold feeling, apart from simply providing warmth and cold feeling to the user. Such various types of thermal feedback can provide a higher degree of immersion for the user in a game environment or a virtual / augmented reality environment, and it is possible to inspect a patient's senses more precisely when applied to a medical device.

In addition to the thermal feedback intensity control method described above, the adjustment of the thermal feedback intensity by mixing the voltage control method, the thermocouple group 1644 control (i.e., region-by-region control) method and the duty cycle control method And the combination thereof is merely a matter of course to those skilled in the art, so a description thereof will be omitted.

2.4.2. Thermal grill motion

Feedback device 1600 may provide thermal grill feedback in addition to warm-up feedback and cooling feedback. Thermal sensation means that when a person's body is stimulated at the same time with the warmth and coldness, it is perceived as a sensation without recognizing it as warmth and cold feeling. Thus, the feedback device 1600 can provide thermal grill feedback to the user through a thermal grill operation that combines the exothermic and endothermic actions.

Meanwhile, the feedback device 1600 may perform various types of thermal grill operations to provide thermal grill feedback, which will be described later, after describing the types of thermal grill feedback.

2.4.2.1. Types of thermal grill feedback

Thermal grill feedback may include neutral thermal grill feedback, hot grill feedback, and cold grill feedback.

Here, the neutral column grill feedback, the hot grill feedback, and the cold grill feedback cause the user to generate neutral heat, heat, and cold and heat, respectively. Neutral heat sensation means sensation without feelings of warmness and coldness. Thermal sensation means feeling sensation in addition to warmth, and cold sensation can mean feeling sensation in addition to feeling cold.

Neutral heat sensation is caused when the user feels warmth and cold sensation falls within a predetermined ratio range. The percentage of neutral fever sensation (hereinafter referred to as 'neutral ratio') can be different for each part of the body that is provided with thermal feedback, and even if it is the same body part, it may be slightly different for each individual. In a situation where the strength is given larger than the strength, there is a tendency to feel a neutral heat sensation.

Here, the intensity of the thermal feedback may be the amount of heat that the feedback device 1600 applies to the body part that is in contact with the contact surface 1600, or the amount of heat that the feedback device 1600 absorbs from the body part. Therefore, when thermal feedback is applied to a certain area for a certain period of time, the intensity of the thermal feedback can be expressed as the difference between the warmth of the target site to which the thermal feedback is applied or the temperature of the cold feeling.

On the other hand, human body temperature is usually between 36.5 and 36.9 ℃, and skin temperature varies from person to person, but it is known to be about 30 ~ 32 ℃ on average. The temperature of the palm is about 33 ℃, which is slightly higher than the average skin temperature. Of course, the temperature values described above may be somewhat different depending on the individual, and even the same person may vary to some extent.

According to one experimental example, it was confirmed that a sensation of neutral heat was felt when a warm feeling of about 40 ° C and a cold sensation of about 20 ° C were given to the palm of 33 ° C. This is due to the warmth of + 7 ° C and coldness of -13 ° C, based on the palm temperature, so the neutral ratio in terms of temperature may be equivalent to 1.86.

As can be seen from the above, in most people, when the warmth and cold sensation are continuously applied to the same sized body area, the skin sensation is expressed by the ratio of the temperature difference caused by the cold sensation to the sensible temperature difference The neutral ratio is in the range of about 1.5 to 5. In addition, the thermal sensation can be felt when the warmth is larger than the neutral ratio, and the cold sensation can be felt when the cold sensation is larger than the neutral ratio.

2.4.2.2. Thermal grill operation with voltage regulation

The feedback device 1600 may perform a thermal grill operation in a voltage regulated manner. The voltage regulating thermal grill operation can be applied to the feedback device 1600 in which the thermocouple array 1643 comprises a plurality of thermocouple groups 1644.

Specifically, in the voltage regulating thermal grill operation, the feedback controller 1648 applies a positive voltage to a part of the thermocouple group 1644 to perform a heat generating operation and applies a reverse voltage to another part to perform a heat absorbing operation, The thermal output module 1640 may be provided by providing both warm and cold feedback at the same time.

17 is a diagram illustrating a voltage regulating thermal grill operation according to an embodiment of the present invention.

17, thermocouple array 1643 includes a plurality of thermocouple groups 1644 arranged to form a plurality of lines. Here, the feedback controller 1648 allows the first thermocouple groups 1644-1 (e.g., the thermocouple groups of the odd lines) to perform the heat generating operation and the second thermocouple groups 1644-2 The even thermocouple groups of even lines) can be powered to perform an endothermic operation. If the thermocouple groups 1644 alternately perform the heat generating operation and the heat absorbing operation according to the line arrangement, the user can receive the warm feeling and the cold sensation at the same time, and as a result, the thermal grill feedback can be provided. Here, the distinction between the odd-numbered lines and the even-numbered lines is arbitrary, and vice versa.

Here, the feedback device 1600 controls the saturation temperature of the first thermocouple groups 1644-1 and the saturation temperature of the second thermocouple groups 1644-2 according to the neutral ratio So as to provide neutral column grill feedback.

18 is a table of voltages for providing neutral column grill feedback in a voltage regulation scheme according to an embodiment of the present invention.

For example, referring to FIG. 18, the feedback controller 1648 may apply five constant voltage and reverse voltages to the thermal output module 1640, respectively, and the thermal output module 1640 may thus generate a five- And assuming a feedback device 1600 in which the magnitude of the temperature change amount due to the heat-absorbing operation is the same and the magnitude of the temperature change amount between each grade is constant, the neutral ratio is set to 3 The feedback controller 1648 applies a constant voltage of the first grade to the first thermocouple group 1644-1 and a third constant voltage to the second thermocouple group 1644-2, By applying a voltage, the thermal output module 1640 can provide neutral thermal power feedback. Similarly, if the neutral ratio is 2.5, the feedback controller 1648 applies a second class constant voltage to the first thermocouple group 1644-1 to provide neutral thermal grill feedback and the second thermocouple group 1644 -2), a reverse voltage of the fifth grade can be applied. Or if the neutral ratio is 4, the feedback controller 1648 outputs the first-level constant voltage to the first thermocouple group 1644-1 and the fourth-order inverse of the second thermocouple group 1644-2 A voltage can be applied to generate neutral thermal grill feedback. Or if the neutral ratio is 2, the feedback controller 1648 provides a neutral thermal sensation by applying a constant voltage of a first class and a reverse voltage of a second class, or by applying a second class constant voltage and a fourth class reverse voltage. can do. At this time, the neutral neutrality of the electrons (when the first-level constant voltage and the second-class reverse voltage are used) is greater than the latter neutral heat conduction (when the second-class constant voltage and the fourth-class reverse voltage are used) It can be strong. That is, even in the case of thermal grill feedback, its strength can be adjusted. On the other hand, the above description regarding the manner of providing the neutral heat trapping is illustrative, and the present invention is not limited thereto. For example, it is not necessary that the number of classes of the thermal feedback is five, and the number of the cold heat and the heat grade may be different. Also, the temperature interval of each grade should not be constant, for example, the voltage interval of each grade may be constant.

The feedback controller 1648 may also provide the hot grill feedback by adjusting the constant voltage and reverse voltage to be below the neutral ratio, or by adjusting to be above the neutral ratio.

18, the feedback controller 1648 applies a first-level constant voltage to the first thermocouple group 1644-1 and a second thermocouple group 1644-1 when the neutral ratio is set to 3, -2), the heat output module 1640 generates heat sensation and sensation at a rate lower than the neutral ratio, thereby providing the user with a warm grill feedback that simultaneously senses warmth and sensation. can do. On the other hand, at this time, the constant voltage need not always be the constant voltage used for the neutral column grill feedback. In other words, the feedback controller 1648 may allow the thermal output module 1640 to provide thermal grill feedback using a fourth order of constant voltage and a fourth order of reverse voltage.

In the case of the cold grill feedback, when the feedback controller 1648 sets the neutral ratio to 3 (the first class, the fourth class) or (the first class and the fifth class) (the constant voltage and the reverse voltage) As shown in FIG.

However, in case of providing a hot grill feedback or a cold grill feedback, when the constant voltage and the reverse voltage are applied at a rate largely deviated from the neutral ratio, there is a problem that the user does not feel a sense of enthusiasm. Therefore, / It may be desirable to adjust the rating of the reverse voltage.

2.5. Heat transfer motion

Hereinafter, the heat transfer operation will be described. Here, the thermal movement operation is an operation of moving heat on the area of the thermal output module, which can be performed using the thermal output module 1640 composed of a plurality of individually controllable thermoelectric couple groups 1644.

FIG. 19 is a schematic diagram of an example of an electric signal for a thermal movement operation according to an embodiment of the present invention, and FIG. 20 is a diagram illustrating a thermal movement operation according to FIG.

19 and 20, the thermal output module 1640 includes a first thermocouple group 1644-1, a second thermocouple group 1644-2, a third thermocouple group 1644-3, 4 thermocouple group 1644-4.

At this time, the feedback controller 1648 can sequentially apply power to the thermoelectric element groups. Accordingly, the first thermocouple group 1644-1 may first perform a thermoelectric operation (where the thermoelectric operation includes a heat generation operation, a heat absorption operation, and a thermal grill operation). Thereafter, the thermoelectric conversion can be performed in the order of the second, third, and fourth thermoelectric couple groups 1644-2, 1644-3, and 1644-4.

Also, the feedback controller 1648 may shut off power to the pre-heat pair group 1644 at the time of applying power to the specific thermopile group 1644. [ Accordingly, the first thermocouple group 1644-1 stops the thermoelectric action when the second thermo couple group 1644-2 starts the thermoelectric action, and the second thermo couple group 1644-3 stops the thermoelectric action when the third thermoelectric couple When the pair group 1644-3 starts thermoelectric conversion, the thermoelectric conversion unit 1644-3 stops thermoelectric conversion, and the third thermo couple group 1644-3 stops thermoelectric conversion when the fourth thermo pair group 1644-4 starts thermoelectric conversion . ≪ / RTI >

Accordingly, the user can feel the heat moving from the area where the first thermocouples group 1644-1 is arranged to the area where the fourth thermocouples group 1644-4 is arranged on the contact surface.

The above-described example can be utilized as follows.

For example, if a plurality of thermoelectric element groups are arranged in a horizontal direction while holding a plurality of thermoelectric element groups in a feedback device, cold heat may be moved from one side to the other side to provide a user with a feeling of passing a cool wind. Also, moving the heat can provide a feeling of passing the heat source.

FIG. 21 is a schematic view of another example of an electric signal for a thermal movement operation according to an embodiment of the present invention, and FIG. 22 is a diagram illustrating a thermal movement operation according to FIG.

21 and 22, the thermal output module 1640 includes a first thermocouple group 1644-1, a second thermocouple group 1644-2, a third thermocouple group 1644-3, 4 thermocouple group 1644-4.

At this time, the feedback controller 1648 can sequentially apply power to the thermocouple groups 1644. Accordingly, the first thermocouple group 1644-1 can perform the thermoelectric conversion operation first. Thereafter, the thermoelectric conversion can be performed in the order of the second, third, and fourth thermoelectric couple groups 1644-2, 1644-3, and 1644-4.

In addition, the feedback controller 1648 may shut off power to the previous thermocouples group after a predetermined time from when the power is applied to the specific thermocouple group 1644. [ Accordingly, when the thermal bodily sensation by the first thermocouple group 1644-1 is ended, the user can sense the heat sensation by the second thermocouple group 1644-2 and the second thermocouple group 1644-1 can sense the heat sensation by the second thermocouple group 1644-2, 2, the thermal sensation by the third thermocouple group 1644-3 can be sensed, and when the thermal sensing by the third thermocouple group 1644-2 is ended, Heat sensation by the four thermocouple group 1644-4 can be sensed.

This takes into account the fact that a predetermined time is required until the contact surface reaches a temperature at which the user feels a sense of heat from the time when power is applied to the thermocouple group. That is, the predetermined time may correspond to a delay time until the temperature of the contact surface reaches a temperature suitable for transmitting the heat sensation after power is applied to the thermoelectric element.

Accordingly, the user naturally feels the heat to move from the region where the first thermocouples group 1644-1 is disposed to the region where the fourth thermocouples group 1644-4 is disposed on the contact surface.

FIG. 23 is a schematic diagram of another example of an electric signal for a thermal movement operation according to an embodiment of the present invention, and FIG. 24 is a diagram illustrating a thermal movement operation according to an embodiment of the present invention.

23 and 24, the thermal output module 1640 includes a first thermocouple group 1644-1, a second thermocouple group 1644-2, a third thermocouple group 1644-3, 4 thermocouple group 1644-4.

At this time, the feedback controller 1648 can sequentially apply power to the thermocouple groups 1644. Accordingly, the first thermocouple group 1644-1 can perform the thermoelectric conversion operation first. Thereafter, the thermoelectric conversion can be performed in the order of the second, third, and fourth thermoelectric couple groups 1644-2, 1644-3, and 1644-4.

Also, the feedback controller 1648 may not turn off the power for the thermoelectric element to which the power source is applied. Accordingly, the user can feel the heat coming from the region where the first thermocouples group 1644-1 is arranged to the region where the fourth thermocouples group 1644-4 is arranged on the contact surface.

The above-described example can be utilized as follows.

For example, in a feedback device, if a plurality of thermocouple groups 1644 are arranged in a vertical direction while held by a user, cold heat is moved from the lower side to the upper side so that the user can move from the lower side of the body to the cold water A soaking feeling can be provided.

FIG. 25 is a schematic view of still another example of an electric signal for a heat movement operation according to an embodiment of the present invention, and FIG. 26 is a diagram illustrating a heat movement operation according to FIG.

25 and 26, the thermal output module 1640 includes a first thermophoric group 1644-1, a second thermophoric group 1644-2, a third thermophoric group 1644-3, 4 thermocouple group 1644-4.

At this time, all of the thermoelectric couple groups 1644 are in a state in which power is supplied to perform the thermoelectric conversion operation.

In this state, the feedback controller 1648 may turn off the power to the thermocouple groups 1644 in order. Accordingly, the first thermocouple group 1644-1 stops the thermoelectric operation first, and then the thermoelectric operation is stopped in the order of the second, third, and fourth thermoelectron groups 1644-2, 1644-3, and 1644-4 can do.

Accordingly, the user can feel the heat drop from the area where the first thermocouples group 1644-1 is arranged to the area where the fourth thermocouples group 1644-4 is arranged on the contact surface.

The above-described example can be utilized as follows.

For example, in a feedback device, if a plurality of thermocouple groups 1644 are arranged in a vertical direction while gripped by a user, cold heat is moved from the lower side to the upper side so that the user can move from the lower side of the body to the cold water It can provide a feeling of departure.

In the example of the thermal movement operation described above, four thermoelectric couple groups 1644 are arranged in a one-dimensional array. However, in the thermal movement operation according to the embodiment of the present invention, the number or arrangement of thermoelectric couple groups 1644 is The present invention is not limited to the above example.

3. How to improve thermal feedback

Hereinafter, a method for improving thermal feedback according to an embodiment of the present invention will be described. Here, the thermal feedback enhancement method can be understood as an operation for improving the degree to which the user perceives the thermal sensation according to the thermal feedback, when the thermal feedback is outputted in the feedback device 1600. [

As described above, the heat transfer operation can be performed in the feedback device 1600. [

19, the feedback controller 1648 applies power sequentially to the thermoelectric element groups, and sequentially applies the power from the first thermocouple group 1644-1 to the fourth thermocouple group 1644-4 in order Thermal feedback can be output. Accordingly, the user can feel the heat moving from the region where the first thermocouples group 1644-1 is arranged to the region where the fourth thermocouples group 1644-4 is arranged on the contact surface. However, even if the intensity of the thermal feedback output from the first thermocouple group 1644-1 and the second thermocouple group 1644-4 is the same, the user can select the first thermocouple group 1644-1 and the fourth thermocouple group 1644-1, The thermal feedback outputted from the pair group 1644-4 can be felt with different intensity.

For example, the user can feel the sensible temperature depending on the thermal feedback outputted from the first thermocouples group 1644-1 and the sensible temperature according to the thermal feedback outputted from the second thermocouple group 1644-2 . This is because the body part that senses the thermal feedback output from the second thermocouples group 1644-2 may be affected by the thermal feedback output from the first thermocouple group 1644-1.

As a specific example, the content reproduction device 1200 outputs warm feedback data including an instruction to output warm feedback at a specific time according to the reproduction of a specific portion of the content, and the feedback device 1600 outputs the warm feedback data, The voltage for outputting the warm-feeling feedback can be applied to the thermocouple group 1644-1 and the second thermocouple group 1644-2. However, even when the sensible temperature of the thermal feedback output from the first thermocouple group 1644-1 and the thermal feedback output from the second thermocouple group 1644-2 is T, the first thermocouple group 1644- 1, the thermal sensory organs distributed in the body parts experiencing the thermal feedback outputted from the second thermocouples group 1644-2 are disturbed by the thermal feedback outputted from the first thermocouple group 1644-2, The thermal feedback output from the second thermocouples group 1644-1 can be sensed. Accordingly, the time for the user to feel the thermal feedback outputted from the second thermocouples group 1644-2 is also delayed, and as a result, the user may not experience the thermal experience at the time of reproducing the specific portion of the content.

However, in the above case, the feedback device 1600 performs the thermal feedback enhancement method, so that the second thermocouple group 1644-2, considering the thermal feedback output from the first thermocouple group 1644-1, If the intensity or temperature of the thermal feedback output from the second thermocouple group 1644-2 is discriminated, in the above example, if the thermal feedback of the temperature above the T degree is output at the specific time in the second thermocouples group 1644-2, The device 1200 can experience a thermal sensation at the intended time.

Therefore, in order to solve such a problem, a method of improving the thermal feedback to improve the recognition of the user's thermal feedback will be described below. Further, in the following, it is assumed that a thermal feedback or improvement method is performed in the feedback device 1600 for convenience of explanation. The thermal feedback enhancement method may be performed in the content reproducing device 1200 or may be performed by a third device other than the feedback device 1600 and the content reproducing device 1200. [

3.1. Excess response of thermal feedback

As described above, when the thermal feedback is outputted from the plurality of thermocouple groups 1644 according to the thermal movement operation, the thermal feedback output from the user's next thermocouple group due to the thermal feedback output from the previous thermocouple group Can be reduced.

In the present invention, an overshoot may be generated in the thermal feedback output from the succeeding thermocouple group as a thermal feedback enhancement method to improve the perception of the thermal feedback output from the user's subsequent thermocouple group . Wherein the overresponse is such that when the temperature feedback of a particular intensity in the thermocouple group is to be output, the temperature of the thermocouple group exceeds the saturation temperature before the temperature of the thermocouple group reaches the saturation temperature of the specific intensity It can mean to do.

Specifically, Fig. 27 is a diagram for explaining a change in applied voltage for generating an over-response of thermal feedback according to an embodiment of the present invention and a temperature change according to the over-response.

Referring to FIG. 27, since the thermocouple array 1643, the contact surface 1641, and the like have a predetermined thermal capacity, an operating power supply (hereinafter, the voltage and current of the operating power supply) When the heat generating operation or the heat absorbing operation is started, the temperature of the contact surface 1641 does not reach the saturation temperature immediately upon power application but gradually changes from the initial temperature Saturation temperature is reached. For example, when the operating power source (the first constant voltage in the example of FIG. 27) is applied to the thermocouple group at the first time point for outputting the warmth feedback of the first intensity, the first reference temperature curve 2710 , The temperature of the contact surface 1641 gradually increases at the initial temperature to reach the first saturation temperature. Further, when the second constant voltage is applied to the thermocouple group at the first time point for outputting the warm-feeling feedback of the second intensity, the temperature of the contact surface 1641, according to the second reference temperature curve 2720, .

In an embodiment of the present invention, feedback device 1600 may generate an over-response to warm-up feedback to improve the user's warm-feel feedback. For example, when warm-up feedback of a first intensity is output, the feedback device 1600 may output a warm-up feedback output of the first intensity to the thermocouple group from the first time point to the second time point, (I.e., the second constant voltage in the example of FIG. 27) higher than the operating voltage, rather than the operating power (i.e., the first constant voltage) Here, the excess power source may mean a power source applied for generating the excess response (hereinafter, the voltage and current of the excess power source are referred to as an 'excess voltage' and an 'excess current', respectively). At this time, the excess power may be in the same direction as the operating power. That is, when the operating power source is a constant voltage, the excess power source is a constant voltage, and when the operating power source is a reverse voltage, the excess power source may be a reverse voltage.

As the excess power is applied, the temperature of the contact surface 1641 may increase along the second reference temperature curve 2720 rather than the first reference temperature curve 2710. In this case, the temperature of the contact surface 1641 at the second time point may be higher than the first saturation temperature. In addition, the feedback device 1600 may apply an operating power for warm feedback of a first intensity at a second time point. Accordingly, the temperature of the contact surface 1641 gradually decreases from the temperature of the contact surface 1641 at the second time point to reach the first saturation temperature. That is, the temperature of the contact surface 1641 at the second time point can be the change temperature.

In summary, at the time of outputting the warm-tempered feedback of the first intensity, which is the target strength, the temperature of the contact surface 1641 corresponds to the first intensity at the second time point as excess power greater than the operating power source is applied to the thermocouple group at the first time point The first saturation temperature may be higher than the first saturation temperature. As the operating power is applied to the thermocouple group at the second time point, the temperature of the contact surface 1641 may be lowered to the first saturation temperature at the change temperature, which is the temperature of the contact surface 1641 at the second time point. Thus, the user can temporarily feel a change temperature higher than the first saturation temperature, whereby the user can feel the warm feedback more clearly, and the point at which the user is aware of the warm feedback of the first strength can also be accelerated.

In an embodiment of the present invention, the magnitude of the excess voltage (the second constant voltage in the example of FIG. 27) applied for the over-response can be predetermined. For example, the excess voltage is a voltage having an intensity one level higher than an intended voltage (i.e., the first constant voltage in the example of FIG. 27) representing the voltage of the target intensity, as in the example of FIG. 27 Or may be a voltage several times higher than the operating voltage. In addition, the excess voltage may be predetermined regardless of the intensity of the thermal feedback. For example, the excess voltage may be higher than the operating voltage by a predetermined value. In addition, the ratio of the operating voltage to the excess voltage may be predetermined.

Further, as the excess voltage is predetermined, the temperature corresponding to the excess voltage (the second saturation temperature in the example of FIG. 27) can also be predetermined.

Likewise, the temperature corresponding to the excess voltage may be a predetermined temperature for the output of the thermal feedback of the predetermined intensity, or may be a temperature not related to the thermal feedback of the predetermined intensity. Further, the temperature corresponding to the excess voltage may be higher than the saturation temperature according to the operating voltage by a predetermined value, and the ratio of the saturation temperature according to the operating voltage and the temperature corresponding to the excess voltage may be predetermined.

Further, in the embodiment of the present invention, the time point at which the application of the excess voltage is stopped, that is, the time point at which the operating voltage is applied, can be determined in advance. In one embodiment of the present invention, the point at which the application of the excess voltage is stopped may be determined according to the magnitude of the temperature of change. In other words, since the time point of stopping the application of the excess voltage affects the magnitude of the temperature of change, the time point at which the application of the excess voltage is stopped can be predetermined in consideration of the relationship between the time point at which the application of the excess voltage is stopped and the change temperature have. For example, the feedback device 1600 may stop applying an excess voltage when the temperature of the contact surface 1641 reaches a predetermined change temperature. In another embodiment of the present invention, it may be determined on the basis of the object strength. For example, when the target intensity is the first intensity, the time for stopping the application of the excess voltage may be t seconds, and when the target intensity is the second intensity, the time for stopping the application of the excess voltage is t + a seconds (Or ta seconds).

28 is a diagram for explaining a change in applied voltage and a temperature change according to the over-response in order to generate an over-response of thermal feedback according to another embodiment of the present invention.

28, when the operating voltage (the first constant voltage in the example of FIG. 28) is applied to the thermoelectric couple group 1644 at the first time for the output of the warmth feedback of the target intensity, the temperature of the contact surface 1641 is 1 reference curve 2810 to reach the first saturation temperature. In this case, when the first over-response (second constant voltage in the example of FIG. 28) is applied between the first time point and the second time point for occurrence of the over-response, the contact point 1641 May increase along the second reference temperature curve 2820, the temperature of the contact surface 1641 may reach a first change temperature higher than the first saturation temperature at the second time point. As the temperature of the contact surface 1641 becomes the first change temperature, the user can more clearly recognize the warm-feeling feedback than applying the operating voltage from the first time.

Further, in an embodiment of the present invention, the feedback device 1600 may apply a second excess response (third constant voltage in the example of FIG. 28) higher than the first excess response between the first and second time points . In this case, as the temperature of the contact surface 1641 increases from the first time point to the second time point along the third reference temperature curve 2830, the temperature of the contact surface 1641 at the second time point is higher than the first change temperature A high second change temperature can be reached. When the second over-response is applied between the first point and the second point of time as compared to the first over-response between the first point and the second point of time, the temperature of the contact surface 1641 at the second point in time So that the user can more clearly feel warm feedback, and the point at which the user perceives the warm feedback can be faster than if the first excess response is granted.

29 is a diagram for explaining a change in applied voltage and a temperature change according to the over-response in order to generate an over-response of thermal feedback according to another embodiment of the present invention.

29, when the operating voltage (the first constant voltage in the example of FIG. 29) is applied to the thermoelectric couple group 1644 at the first time for the output of the warmth feedback of the target intensity, the temperature of the contact surface 1641 is 1 reference curve 2910 to reach the first saturation temperature. In this case, when an excess voltage (second constant voltage in the example of FIG. 29) is applied between the first time point and the second time point for occurrence of the over-response, the contact point of the contact surface 1641 As the temperature increases along the second reference temperature curve 2920, the temperature of the contact surface 1641 can reach a first change temperature higher than the first saturation temperature at the second time point. As the temperature of the contact surface 1641 becomes the first change temperature, the user may be more aware of the warm feedback than applying the operating voltage from the first time.

Also, in an embodiment of the present invention, the feedback device 1600 may apply the excess voltage from the first time point, but may apply the excess voltage until the third time point later than the second time point. In this case, as the temperature of the contact surface 1641 increases along the second reference temperature curve 2920 to the third time point, the temperature of the contact surface 1641 at the third time point is higher than the temperature of the contact surface 1641 at the second time point It is possible to reach a second change temperature higher than the first change temperature. Accordingly, the user can feel warm feedback more clearly than when the excess voltage is applied to the second time point.

FIG. 30 is a diagram for explaining a change in applied voltage and a temperature change according to the over-response in order to generate the over-response of the cold feedback according to the embodiment of the present invention.

Referring to FIG. 30, even when cold feedback is output, the temperature of the contact surface 1641 does not reach the saturation temperature simultaneously with the power application when the heat absorbing operation is started, as in the case where the warm feedback is outputted Gradually changing to reach a saturation temperature.

When the operating voltage (first reverse voltage in the example of FIG. 30) is applied to the thermocouple group at the first time point for outputting the cold feedback of the first intensity, the contact surface 1641 is gradually lowered at the initial temperature to reach the first saturation temperature. When an excess response (a second reverse voltage in the example of FIG. 30) is applied to the thermocouple group at the first time point for outputting the cold feedback of the second intensity, according to the second reference temperature curve 3020, The temperature of the contact surface 1641 reaches the second saturation temperature.

In an embodiment of the invention, feedback device 1600 may generate an over-response to cold feedback to improve the user's cold feedback. For example, when cold feedback of a first intensity is output, the feedback device 1600 may be programmed to generate the over-response, to the thermocouple group, from the first time to the second time, It is possible to apply an excess voltage which is larger than the operating voltage, rather than the operating voltage. As the excess voltage is applied, the temperature of the contact surface 1641 may decrease along the second reference temperature curve 3020 rather than the first reference temperature curve 3010. In this case, the temperature of the contact surface 1641 at the second time point may be lower than the first 'saturation temperature. In addition, feedback device 1600 may apply an operating voltage for cold feedback of a first intensity at a second time point. Accordingly, the temperature of the contact surface 1641 gradually increases from the temperature of the contact surface 1641 at the second time point to reach the first 'saturation temperature. That is, the temperature of the contact surface 1641 at the second time point can be the change temperature.

In an embodiment of the invention, the magnitude of the excess voltage applied for the over-response can be predetermined, the temperature corresponding to the applied voltage for the over-response can also be predetermined, and the application of the voltage applied for the over- The point of time at which the operation is stopped, that is, the point at which the operating voltage is applied, can be determined in advance.

Further, in the embodiment of the present invention, at the second time point, a voltage having a higher voltage value than the excess voltage may be applied to generate an over-response. 27 to 29 can be directly applied to these various implementations, and a detailed description thereof will be omitted.

3.2. Implementation of a method for perceptually improving thermal feedback

Figure 31 is a flow chart of a method for perceptually improving thermal feedback according to an embodiment of the present invention.

The recognition improvement method according to FIG. 31 includes the steps of (S3110) confirming the type and intensity of the thermal feedback output from the first thermo couple group and the second thermo pair group, and determining the kind and the strength of the thermal feedback to the second thermo pair group (S3120) applying the same or different cognitive enhancing power as the operating power predetermined by the intensity.

In the cognition enhancement method according to the embodiment of the present invention, the first thermo couple group and the second thermo pair group represent groups of individually controlled thermoelectric elements, and the first thermo pair group and the second thermo pair group are adjacent can do. As an example, the first thermocouple group and the second thermocouple group may be included in the same thermocouple array.

Specifically, the feedback device 1600 can check the type and intensity of the thermal feedback output from the first thermocouple group and the second thermocouple group (S3110). At this time, the types and intensities of the thermal feedback output from the first thermocouple group and the second thermocouple group may be the same or different from each other. In addition, the type (constant voltage / reverse voltage) and magnitude of the voltage applied to the first thermocouple group and the second thermocouple group can be predetermined depending on the type and intensity of the thermal feedback. That is, depending on the type and intensity of the thermal feedback, the operating power applied to the first thermocouple group and the second thermocouple group for the output of the thermal feedback can be predetermined.

In one embodiment of the present invention, the feedback device 1600 may obtain thermal feedback data from the content playback device 1200. The thermal feedback data may include information on the type and intensity of thermal feedback output from each thermo couple group, and output timing and / or end timing of the thermal feedback. The feedback device 1600 can determine the type and intensity of the thermal feedback output from the thermocouple group based on the thermal feedback data

Further, the timing at which the thermal feedback is outputted in the first thermocouple group and the second thermocouple group may be different from each other. For example, thermal feedback may be output in the second thermocouple group after the thermal feedback is output in the first thermocouple group, in accordance with the heat transfer operation described above. Of course, as described in FIGS. 19 to 26, the timing at which the thermal feedback is outputted in the first thermocouple group and the second thermocouple group may be various embodiments.

In addition, the feedback device 1600 may apply the same or different cognitive enhancing power to the second thermocouples group, depending on the type and intensity of thermal feedback output from the second thermocouples group (S3120 ).

here. The cognitive enhancement power source may refer to a power source applied to the thermocouple group to improve the user's perception of thermal feedback. For example, the perceptual enhancement power may include the over-power as described above. In addition, the perceptual enhancement power supply may include various power supplies to enhance the perception of the user, even if they do not cause an overresponse, such as the overdrive power described above.

As described above, due to the thermal feedback output from the first thermocouple group, the user may not be able to perceive the thermal feedback output from the second thermocouple group to the intent intensity at the intended time in the feedback device 1600. [ Accordingly, the feedback device 1600 can adjust the thermal feedback output from the second thermocouple group to improve the perception of the user's thermal feedback, and to this end, the feedback of the thermal feedback to the second thermocouple group It is possible to apply a voltage different from the predetermined voltage by the type and the intensity. However, the magnitude of the voltage applied to improve the recognition of the thermal feedback in the second thermocouple group, the voltage application time, and the like may vary depending on various conditions, for example, thermal feedback outputted from the first thermocouple group and the second thermocouple group Depending on the type and strength of the material. For example, in order to improve the recognition of thermal feedback to the second thermocouple group, the feedback device 1600 applies a voltage equal to a predetermined voltage to the second thermocouple group by the kind and intensity of the thermal feedback It is possible.

Hereinafter, an implementation example of a method of improving the perception of thermal feedback in various situations will be described. For the sake of convenience of explanation, the case where the warm-feeling feedback is outputted in the first and second thermocouple groups will be described below. However, the present invention is not limited to this case. It is needless to say that the present invention can also be applied to a case where feedback or thermal grill feedback is outputted.

32 is a graph showing changes in applied voltage and temperature at the contact surface according to the method of improving the thermal feedback in the case where the thermal feedback of the same intensity is output in the first thermocouple group and the second thermocouple group according to the embodiment of the present invention Fig.

Referring to FIG. 32, the first thermocouple group and the second thermocouple group can output the warm-feeling feedback of the first intensity in the same manner. However, in accordance with the heat transfer operation, warm feedback can be output in the second thermocouple group after the output of the warmth feedback is started in the first thermocouple group.

Specifically, at the first time point, the first operating voltage (the first constant voltage in the example of Fig. 32) for outputting the warm-feeling feedback of the first intensity to the first thermocouple group may be applied. Thus, the temperature of the contact surface of the first thermocouple group can rise to the first saturation temperature. As an example, the first thermocouple group may be the first thermocouple group in which a heat transfer operation is performed in the thermocouple array. (Second constant voltage in the example of FIG. 32) for outputting warm feedback of the first intensity to the second thermocouple group from the second time point to the third time point after the predetermined time, (Second constant voltage in the example of Fig. 32) can be applied. For example, the excess voltage may be a voltage for output of warm-feedback of a second intensity. As the excess voltage is applied from the second time point to the third time point, the temperature at the contact surface of the second thermocouple group rises along the second reference temperature curve 3220, and the temperature of the second thermocouple group The temperature at the interface, i.e., the change temperature, may be higher than the first saturation temperature. As the changing temperature becomes higher than the first saturation temperature, the cognitive effect on the thermal feedback output from the second thermocouple group can be improved.

Fig. 33 is a graph showing changes in applied voltage and temperature at the contact surface according to the method for improving the thermal feedback in the case where the thermal feedback of the same intensity is output in the first thermocouple group and the second thermocouple group according to another embodiment of the present invention Fig.

Referring to FIG. 33, the first thermo couple group and the second thermo pair group output the warm feedback of the first intensity, and after the warm feedback is outputted in the first thermo pair group Warm feedback can be output in the second thermocouple group.

Compared to FIG. 33, the feedback device 1600 can also perform a thermal feedback perception enhancement method for the first thermocouple group. For example, in accordance with the heat transfer operation, thermal feedback may be output earlier than the first thermo couple group in another thermo couple group close to the first thermo pair group, and thermal feedback may be generated in the other thermo pair group Lt; RTI ID = 0.0 > 1 < / RTI > thermocouple group. Accordingly, in the present invention, it is also possible to perform a thermal feedback perception improvement method for the first thermocouple group. In addition, in order to improve the degree of recognition of the thermal feedback output from the first thermocouple group regardless of whether the other thermocouple group does not output thermal feedback or whether it outputs thermal feedback in the surrounding thermocouple group An over-response can be generated for thermal feedback to the first thermocouple group.

33, the operating voltage for outputting the warmth feedback of the first intensity to the first thermocouple group between the first point of time and the second point of time (Second constant voltage in the example of FIG. 33) of a magnitude higher than the magnitude of the voltage (the first constant voltage in FIG. As a result, the temperature of the contact surface of the first thermocouple group increases along the second reference temperature curve 3320, so that the temperature of the contact surface of the first thermocouple group at the second time point can be higher than the first saturation temperature. That is, an excess response period may occur that represents a time period during which the temperature of the contact surface of the first thermocouple group becomes higher than the first saturation temperature. Then, at the second time point, the operating voltage is applied to the first thermocouple group, so that the temperature of the contact surface of the first thermocouple group can be lowered to the first saturation temperature.

Likewise, a method for perceptually improving the thermal feedback can also be performed on the second thermocouple group.

FIG. 34 is a diagram showing a temperature change at a contact surface according to a method of improving thermal feedback in a case where high-intensity thermal feedback is outputted to a second thermal pair group from a first thermo couple group according to an embodiment of the present invention .

Referring to FIG. 34, in (a) and (b), thermal feedback of high intensity in the second thermoelectric group can be outputted from the first thermo couple group. For example, warm feedback of the first intensity may be output in the first thermocouple group, and warm feedback of the second intensity higher than the first intensity may be output in the second thermocouple group. Further, in accordance with the heat movement operation, warm feedback can be output in the second thermocouple group after the output of the warmth feedback is started in the first thermocouple group.

(a), the feedback device 1600 is configured such that, as in the case where the warming feedback of the same intensity is output to the first thermocouple group and the second thermocouple group, An over-response can be generated for the feedback. For example, when the operating voltage for the warm-up feedback of the second intensity to the second thermocouple group from the second point of time to the third point of time after the first point of time at which the warmth feedback of the first intensity is output in the first thermocouple group (In the example of Fig. 34, the third constant voltage) higher than the second constant voltage in the example of Figs. Accordingly, the temperature of the contact surface of the second thermocouple group increases from the second point of view to the third point of view along the third reference temperature curve 3430, and the temperature of the contact surface of the second thermocouple group increases at the third point of time 2 saturation temperature. Then, at the third time point, an operating voltage for warm-feeling feedback of the second intensity is applied so that the temperature of the contact surface of the second thermocouple group can reach the second saturation temperature. Accordingly, during the time when the temperature of the contact surface of the second thermocouple group becomes higher than the second saturation temperature (i.e., the time interval between the 3-1nd time point and the 3-2nd time point), the warmth An over-response of the feedback may occur. With the occurrence of the over-response, the cognitive effect on the thermal feedback output in the second thermocouple group can be improved.

(b), unlike in (a), the feedback device 1600 may not generate an overresponse for the warm feedback output in the second thermocouple group. Specifically, in the second thermocouple group, the warm-tempered feedback of the second intensity, which is higher than the warm-feeling feedback of the first intensity output from the first thermocouple group, is output. In this case, since the temperature of the contact surface of the second thermocouple group becomes higher than the first saturation temperature, which is the temperature of the contact surface of the first thermocouple group, even if the user's senses are disturbed by the warm- Can be aware of the warm-feeling feedback output from the second thermocouple group without being affected by the warm-up feedback in the first thermocouple group. Accordingly, when the feedback device 1600 confirms that the intensity of the thermal feedback output from the second thermocouple group is higher than the intensity of the thermal feedback output from the second thermocouple group, The thermal feedback of the identified intensity can be output.

FIG. 35 is a view showing a temperature change at a contact surface according to a method for improving the thermal feedback in the case where low-intensity thermal feedback is outputted to the second thermal pair group from the first thermo couple group according to the embodiment of the present invention .

Referring to FIG. 35, in (a), (b), and (c), thermal feedback of low intensity in the second thermoelectric group can be outputted from the first thermo couple group. For example, warm feedback of the second intensity may be output in the first thermocouple group, and warm feedback of the first intensity lower than the second intensity may be output in the second thermo couple group. Further, in accordance with the heat movement operation, warm feedback can be output in the second thermocouple group after the output of the warmth feedback is started in the first thermocouple group.

(a), feedback device 1600 may not generate an overresponse for the warm-up feedback output in the second thermocouple group. Specifically, in the second thermocouple group, the warm-tempered feedback of the first intensity which is lower than the warm-feeling feedback of the second intensity output from the first thermocouple group is output. At this time, the temperature of the contact surface of the second thermocouple group can be the first saturation temperature lower than the second saturation temperature, which is the temperature of the contact surface of the first thermocouple group. That is, a temperature difference occurs between the contact surface of the first thermocouple group and the contact surface of the second thermocouple group, and the user can recognize the temperature difference. Therefore, even if the sense of the user is disturbed by the warm-feeling feedback in the first thermocouple group, the user is not influenced by the warm-feeling feedback in the first thermocouple group and is output from the second thermocouple group Warm feedback can be recognized. Thus, if the feedback device 1600 determines that the intensity of the thermal feedback output in the second thermocouple group is lower than the intensity of the thermal feedback output in the first thermocouple group, The thermal feedback of the identified intensity can be output without causing an overresponse to the thermal feedback.

(b), the feedback device 1600 may temporarily increase the temperature difference between the contact surface of the first thermocouple group and the contact surface of the second thermocouple group. Specifically, according to the embodiment, when the temperature difference between the contact surface of the first thermocouple group and the contact surface of the second thermocouple group becomes large, the user can more easily recognize the thermal feedback outputted from the second thermocouple group have. Accordingly, the feedback device 1600 is a method of perceiving the temperature of the contact surface of the second thermocouple group so as to temporarily increase the temperature difference between the contact surface of the first thermocouple group and the contact surface of the second thermocouple group Can be gradually increased.

In an embodiment of the present invention, the feedback device 1600 starts outputting the warmth feedback of the second intensity in the first thermocouple group at the first time point, and then, at the second point in time, It is possible to output warm feedback. At this time, the feedback device 1600 sets the operating temperature (the first constant voltage in the example of FIG. 35 (b)) for the warmth feedback of the first intensity to the second thermocouple group between the second point of time and the fourth point of time It is possible to apply the third constant voltage lower than the operating temperature. As a result, the temperature of the contact surface in the second thermocouple group gradually increases in accordance with the third reference temperature curve 3510. Thereafter, the feedback device 1600 applies the operating temperature to the second thermocouple group from the fourth time point, the temperature increase rate at the contact surface in the second thermocouple group becomes faster, and at the fifth time point, The temperature of the contact surface in the paired group reaches the first saturation temperature. Thus, the third positive voltage lower than the operating temperature is applied to the second thermocouple group between the second time point and the fourth time point, rather than the operating temperature is applied to the second thermocouple group from the second time point, The temperature difference between the contact surface of the first thermocouple group and the contact surface of the second thermocouple group increases from the second point of view to the fourth point of view, I can recognize well. When the operating temperature is applied to the second thermocouple group from the second point in time, the contact surface of the second thermocouple group reaches the first saturation temperature at the third point of time, When the third constant voltage is applied to the second thermocouple group, the contact surface of the second thermocouple group can reach the first saturation temperature at a fifth point later than the third point.

(c), the feedback device 1600 may generate an overresponse for the warm-up feedback of the first intensity output in the second thermocouple group. According to the embodiment, even when the intensity of the thermal feedback output from the second thermocouple group is lower than the intensity of the thermal feedback output from the first thermocouple group, as the temperature of the contact surface of the second thermocouple group temporarily increases The user may be more aware of the thermal feedback output from the second thermocouple group. To this end, the feedback device 1600 supplies a second voltage to the second thermocouple group from the second time point to the sixth thermocouple group by applying a voltage (a first constant voltage in the example of FIG. 35 (c)) for warm- (Second constant voltage in the example of FIG. 35 (c)) can be applied. The temperature of the contact surface of the second thermocouple group increases along the second reference temperature curve 3520 from the second point of view to the sixth point of view, 1 < / RTI > saturation temperature. Then, at the sixth time point, the operating response for the warm-up feedback of the first intensity is applied so that the temperature of the contact surface of the second thermo couple group can reach the first saturation temperature. In this case, an excess response of the warm-feeling feedback output from the second thermo couple group may occur during a time period during which the temperature of the contact surface of the second thermo couple group becomes higher than the first saturation temperature. With the occurrence of the over-response, the cognitive effect on the thermal feedback output in the second thermocouple group can be improved.

36 is a graph showing a change in temperature at the contact surface according to the method for improving the perception of thermal feedback when warm feedback is output to the first thermocouple group according to the embodiment of the present invention and cold feedback is output from the second thermal pair group Fig.

Referring to Fig. 36, in (a) and (b), warm-feeling feedback is output in the first thermocouple group, and cold feedback is output in the second thermocouple group. At this time, the intensity of the warm-feeling feedback output from the first thermocouple group and the intensity of the cold feedback output from the second thermo-couple group may be the same intensity or different strengths. For convenience of explanation, the following description is based on the premise that the intensity of the warm-feeling feedback output from the first thermocouple group is the same as the intensity of the cold-feel feedback output from the second thermo couple group. However, the present invention is not limited to this, The contents described in FIG. 36 can be applied even when the intensity of the warm-feeling feedback output from the pair group is different from the intensity of the cold feedback output from the second thermo couple group. Further, in accordance with the heat movement operation, the cold feedback can be output in the second thermo couple group after the output of the warm feedback is started in the first thermo pair group.

(a), the feedback device 1600 may not generate an overresponse for the cold feedback output from the second thermocouple group. Specifically, in the second thermocouple group, cold feedback, which is opposite to the warm-feeling feedback output from the first thermocouple group, is output. The warmth point of the user's body is stimulated by the warm feedback, and the cold point of the user's body is stimulated by the cold feedback. As a result, since the sensory point of the user influenced by the warm-feeling feedback outputted from the first thermocouple group differs from the sensory point of the user influenced by the cold feedback fed out from the second thermocouple group, It is possible to recognize the cold feedback output from the second thermocouple group without being affected by the warmth feedback in the group. Accordingly, when the feedback device 1600 confirms that the type of the thermal feedback output from the second thermocouple group is different from the type of thermal feedback output from the first thermocouple group, the feedback device 1600 controls the second thermocouple group The thermal feedback of the identified type can be output without causing an over-response to the thermal feedback of the thermal feedback.

(b), the feedback device 1600 may generate an overresponse for the cold feedback output from the second thermocouple group. According to the embodiment, even when the type of thermal feedback output from the second thermocouple group differs from the type of thermal feedback output from the first thermocouple group, the temperature of the contact surface of the first thermocouple group and the temperature of the second thermocouple As the temperature difference between the contact surfaces of the groups increases, the user may be more aware of the thermal feedback output from the second thermocouple group. To this end, the feedback device 1600 sets the operating voltage for cold feedback of the first intensity to the second thermocouple group from the second time point to the third time point at which the second thermocouple group outputs cold feedback (In the example of FIG. 36 (b), the second reverse voltage) having a higher voltage value than the first reverse voltage in the example of FIG. Accordingly, an excess response of cold feedback output from the second thermocouple group may occur during a time period during which the temperature of the contact surface of the second thermocouple group becomes lower than the first 'saturation temperature. The temperature difference between the contact surface of the first thermocouple group and the contact surface of the second thermocouple group is temporarily increased due to the generation of the overresponse and thus the cognitive effect on the thermal feedback output from the second thermocouple group Can be improved.

37 is a graph showing a change in temperature at a contact surface according to a method for improving the perception of thermal feedback when cool feedback is output to the first thermocouple group according to the embodiment of the present invention and warm feedback is output from the second thermal pair group Fig.

37, in (a) and (b), in contrast to the embodiment of Fig. 36, cold feedback is output in the first thermocouple group and warm feedback can be output in the second thermocouple group. At this time, the intensity of the cold feedback output from the first thermocouple group and the intensity of the warm-up feedback output from the second thermocouple group may be the same or different. For convenience of explanation, the following description is based on the assumption that the intensity of the cold feedback output from the first thermocouple group is the same as the intensity of the warm feedback which is output from the second thermocouple group. However, the present invention is not limited to this, The contents described in FIG. 37 can be applied even when the intensity of the cold feedback outputted from the pair group is different from the intensity of the warm feedback fed out from the second thermo couple group. Further, in accordance with the heat movement operation, warm feedback can be outputted in the second thermo couple group after the output of the cold feedback is started in the first thermo couple group.

(a), feedback device 1600 may not generate an overresponse for the warm-up feedback output in the second thermocouple group. As described above with reference to FIG. 36 (a), as the sense point of the user between the warm feedback and the cold feedback is different, the user is not affected by the cold feedback in the first thermo couple group, It is possible to recognize the warm-feeling feedback outputted. Accordingly, when the feedback device 1600 confirms that the type of the thermal feedback output from the second thermocouple group is different from the type of thermal feedback output from the first thermocouple group, the feedback device 1600 controls the second thermocouple group The thermal feedback of the identified type can be output without causing an over-response to the thermal feedback of the thermal feedback.

(b), the feedback device 1600 may generate an overresponse for the warm-up feedback output in the second thermocouple group. As described above with reference to FIG. 36 (b), even when the type of thermal feedback output from the second thermocouple group differs from the type of thermal feedback output from the first thermocouple group, As the temperature difference between the contact surface of the thermocouple group and the contact surface of the second thermocouple group increases, the user can more clearly recognize the thermal feedback output from the second thermocouple group. To this end, the feedback device 1600 sets the operating voltage for warm-up feedback of the first intensity to the second thermocouple group from the second time point to the third time point at which the second thermocouple group outputs the warm- (In the example of FIG. 37 (b), the second constant voltage) having a higher voltage value than the first constant voltage in the example of FIG. Accordingly, an over-response of the warm-up feedback output from the second thermo couple group may occur during a time period during which the temperature of the contact surface of the second thermo couple group becomes higher than the first saturation temperature. The temperature difference between the contact surface of the first thermocouple group and the contact surface of the second thermocouple group is temporarily increased due to the generation of the overresponse and thus the cognitive effect on the thermal feedback output from the second thermocouple group Can be improved.

38 is a graph showing a change in applied voltage and a change in temperature at the contact surface according to a method for improving the thermal feedback in the case where the cold feedback is output in the first thermocouple group and the second thermocouple group according to the embodiment of the present invention FIG.

The first thermocouple group and the second thermocouple group can output cold feedback according to the same strength or different strengths from each other. However, in accordance with the heat transfer operation, cold feedback can be output in the second thermo couple group after the output of the cold feedback is started in the first thermo couple group.

In an embodiment of the present invention, the feedback device 1600 is a method of perceptually improving thermal feedback, and when outputting warm feedback in a second thermocouple group, generating an overt response of the warm feedback in the second thermocouple group However, when cold feedback is output in the second thermocouple group, an overresponse may not be generated with respect to the cold feedback output from the second thermocouple group.

Specifically, the number of cold spots in the user's senses is larger than the number of warm spots, although it is different for each body part. As the number of cold spots is larger than the number of cold spots in the same region due to the cold feedback output from the first thermocouple group as the number of cold spots increases, When cold feedback is output in one thermocouple group, the user ' s senses may be less disturbed. Accordingly, when the thermal feedback output from the second thermocouple group is cold feedback, even if an over-response does not occur with respect to the cold feedback output from the second thermocouple group, It is possible to recognize the cold feedback output from the second thermocouple group without being influenced by the feedback. Thus, the feedback device 1600 may not generate an overresponse for the cold feedback output in the second thermocouple group.

38, a first operating voltage (a first reverse voltage in the example of FIG. 38) for outputting cold feedback to the first thermocouple group may be applied at a first time point, as shown in FIG. In addition, a second operating voltage (first reverse voltage in the example of FIG. 38) may be applied to the second thermocouple group at a second time point after the first time point. Accordingly, no excessive response is generated in the thermal feedback of the second thermocouple group, and the temperature of the contact surface of the first thermocouple group reaches the first 'saturation temperature. However, despite the fact that the overresponse does not occur, as the number of freezing points is larger than the number of the on-points, the user is not influenced by the cold feedback output from the first thermocouple group, Cold feedback can be perceived.

38, in an embodiment of the present invention, the feedback device 1600 may perform the perceptual enhancement method of thermal feedback according to steps S3110 and S3120. At this time, as shown in Fig. 38, in step S3110, the feedback device 1600 can confirm that the type of thermal feedback output from the second thermocouple group is cold feedback. In this case, in step S3120, the feedback device 1600 does not generate an over-response to the cold feedback output from the second thermocouple group but applies a predetermined voltage to output the cold feedback in the second thermocouple group . That is, whether or not the feedback device 1600 generates an over-response to the thermal feedback output from the second thermocouple group in step S3120 can be selectively determined according to the type of thermal feedback output from the second thermocouple group. In other words, in step S3120, when the feedback device 1600 outputs the warm-up feedback in the second thermocouple group, the over-response can be generated in the warm-up feedback, and in the case of outputting the cold feedback in the second thermo- couple group May not generate an over-response to the cold feedback.

3.3. Time of application of excess power to generate over-response of thermal feedback

As described above, according to the heat transfer operation, after the output of thermal feedback is started in the first thermocouple group, a voltage for outputting thermal feedback in the second thermocouple group can be applied. In the present invention, excess voltage may be applied to the second thermocouple group so that the thermal feedback output from the second thermocouple group is more visible to the user. At this time, the time when the excess voltage is applied to the second thermocouple group can be adjusted. Hereinafter, the relationship between the time point at which the excess voltage is applied to the first thermocouple group and the point at which the excess voltage is applied to the second thermocouple group will be described.

Figs. 39 to 41 are diagrams showing temperature changes at the contact surface according to the voltage application time in the first thermocouple group and the second thermocouple group in the method for improving the perception of thermal feedback according to the embodiment of the present invention .

In an embodiment of the present invention, the first thermocouple group can output a warmth feedback of a first intensity. Further, in accordance with the heat movement operation, warm feedback can be output in the second thermocouple group after the output of the warmth feedback is started in the first thermocouple group.

Specifically, the feedback device 1600 may perform a method of improving the perception of thermal feedback for the first thermocouple group. The feedback device 1600 is connected to the first thermocouple group at a first timing between the first timing and the second timing with a first operating voltage (first constant voltage in the example of FIGS. 39 to 41) for outputting the warm- A high first overvoltage (second constant voltage in the example of FIGS. 39 to 41) can be applied. Accordingly, the temperature of the contact surface of the first thermocouple group increases along with the second reference temperature curve 3920, and an excess response period in which the temperature of the contact surface of the first thermocouple group is higher than the first saturation temperature may occur. Then, at a second time point, a first operating voltage lower than the first overvoltage is applied to the first thermocouple group, so that the temperature of the contact surface of the first thermocouple group can be lowered to the first saturation temperature.

In the present invention, based on a second time point at which the voltage applied to the first thermocouple group is applied from the first excess voltage to the first operation voltage, a second excess voltage (the second excess And the voltage is an excess voltage applied to the second thermocouple group) can be adjusted.

Referring to FIG. 39, in an embodiment of the present invention, a time point at a second time point, that is, a time point at which a first operating voltage is applied to a first thermocouple group, that is, During the application, a second excess voltage may be applied to the second thermocouple group. In this case, the second overvoltage, which is the second overvoltage, is applied to the second thermocouple group at the third time point preceding the second time point, and the second overvoltage may be applied until the fourth time point after the second time point. Accordingly, the temperature of the contact surface of the second thermocouple group increases from the second time point to the fourth time point according to the second reference temperature curve 3920, and the temperature of the contact surface of the second thermocouple group is higher than the first saturation temperature An overresponse interval may occur. In summary, as the second time point when the first driving voltage is applied to the first thermocouple group is between the third time point and the fourth time point, the time when the first excess voltage is applied to the first thermocouple group The time for which the second excess voltage is applied to the second thermocouple group may overlap. That is, during the application of the second excess voltage to the second thermocouple group, the temperature of the contact surface in the first thermocouple group may be increased to the change temperature and then decreased.

Then, at a fourth time point, a first driving voltage lower than the first overvoltage is applied to the second thermo couple group, so that the temperature of the contact surface of the second thermo pair group can be lowered to the first saturation temperature.

Referring to FIG. 40, in an embodiment of the present invention, at the second time point when the first driving voltage is applied to the first thermocouple group, that is, when the application of the first excess voltage to the first thermocouple group ends At the same time, a second excess voltage may be applied to the second thermocouple group. In this case, the second overvoltage, which is the second overvoltage, is applied to the second thermocouple group at the third time point same as the second time point, and the second overvoltage may be applied until the fourth time point after the second time point . Accordingly, the temperature of the contact surface of the second thermocouple group increases from the second time point to the fourth time point according to the second reference temperature curve 3920, and the temperature of the contact surface of the second thermocouple group is higher than the first saturation temperature An overresponse interval may occur. In summary, since the second time point at which the application of the first over-voltage is terminated to the first thermo couple group and the third time point at which the second over-voltage is applied to the second thermo couple group are the same time point, The time when the first overvoltage is applied to the pair group and the time when the second overvoltage is applied to the second thermo couple group do not overlap with each other and the time when the first drive voltage is applied to the first thermo pair group and the time when the second thermo couple The time over which the second overvoltage is applied to the group may overlap. That is, when the second excess voltage is applied to the second thermocouple group, the temperature of the contact surface in the first thermocouple group can be reduced at the change temperature. In other words, when the second excess voltage is applied to the second thermocouple group, the temperature change direction of the contact surface of the first thermocouple group can be changed.

Referring to FIG. 41, in an embodiment of the present invention, after a second time point at which a first driving voltage is applied to the first thermocouple group has elapsed, that is, after a first excess voltage After a predetermined time has elapsed after the application is terminated, a second excess voltage may be applied to the second thermocouple group. In this case, the second overvoltage, which is the second overvoltage, is applied to the second thermocouple group at a third time point after the second time point, and the second excess voltage may be applied until the fourth time point after the second time point . Accordingly, the temperature of the contact surface of the second thermocouple group increases from the second time point to the fourth time point according to the second reference temperature curve 3920, and the temperature of the contact surface of the second thermocouple group is higher than the first saturation temperature An overresponse interval may occur. In summary, as the second excess voltage is applied to the second thermocouple group at the third time point after the second point in time, at which the application of the first excess voltage to the first thermocouple group ends, The time at which the first overvoltage is applied and the time at which the second overvoltage is applied to the second thermo couple group do not overlap with each other so that the time at which the first drive voltage is applied to the first thermo couple group and the time at which the first over- 2 overvoltage may be overlapped. That is, when the second excess voltage is applied to the second thermocouple group, the temperature of the contact surface in the first thermocouple group may be reduced at the change temperature or reach the first saturation temperature.

39, the third time point at which the second over-voltage is applied to the second thermo couple group is higher than the second time point at which the application of the first over-voltage is terminated to the first thermo couple group, As shown in FIG. 41, a phenomenon that the thermal feedback outputted from the second thermocouple group is recognized more clearly when the third time point is after the second time point as in the case of the third time point as in FIG. 41, Respectively. This is because the time when the change temperature is output from the contact surface of the first thermocouple group and the time when the change temperature is output from the contact surface of the second thermocouple group when the third time point is after the second time point May be due to the widest size of the time interval between them. However, the type and the intensity of the thermal feedback output from the first thermocouple group and the second thermocouple group may vary depending on the situation in which thermal feedback is output.

4. Reducing the response time of thermal feedback

Hereinafter, a method of reducing the response time of the thermal feedback according to the embodiment of the present invention will be described. Here, the response time refers to the time at which the voltage for outputting the thermal feedback of the specific intensity is applied to the thermocouple group, that is, the temperature of the contact surface of the thermocouple group from the start point of the thermoelectric action corresponds to the thermal feedback of the specific intensity May mean the time between when the temperature reaches the saturation temperature (i.e., the target temperature). The method of shortening the response time of the thermal feedback can be understood as an operation of shortening the response time.

Specifically, as in the example of Fig. 11, when a constant voltage is applied to the thermocouple group, the temperature of the contact surface rises from the initial temperature to the saturation temperature. At this time, the temperature of the contact surface does not rise instantly from the initial temperature to the saturation temperature, but the temperature rises for a predetermined time, that is, the response time. In other words, only a certain time after the start of the thermoelectric operation means that the temperature of the contact surface reaches a specific temperature corresponding to the thermal feedback, and it takes a certain time for the user to feel the thermal feedback of the intended intensity have.

However, in the above case, if the response time is shortened by the feedback device 1600 performing the method of response time reduction of the thermal feedback, the temperature of the contact surface corresponds to the thermal feedback for a time less than the certain time after the thermoelectric operation is started A specific temperature is reached. That is, as the response time is shortened, the user can experience the thermal feedback of the intended intensity more quickly.

Therefore, a method of shortening the response time of the thermal feedback will be described below. In the following description, it is assumed that the response time reduction method is performed in the feedback device 1600 for convenience of explanation. However, the present invention is not limited thereto, and the response time reduction method may be performed in the content reproducing device 1200 or may be performed by a third device other than the feedback device 1600 and the content reproducing device 1200.

FIG. 42 is a flowchart illustrating a method of reducing the response time of thermal feedback according to an embodiment of the present invention. FIG.

The method of reducing the response time according to FIG. 42 includes the steps of: checking the type and strength of thermal feedback outputted from the thermocouple group (S4210); determining whether the thermal feedback is larger than the predetermined operating power by the type and intensity of the thermal feedback for a predetermined time (S4220) applying a large short-circuit power source to the thermocouple group (S4220), and applying the operating power to the thermocouple group after the predetermined time elapses (S4230).

Specifically, the feedback device 1600 can check the type and intensity of the thermal feedback output from the thermocouple group (S4210). As an example, the kind of thermal feedback may be any one of warm-feeling feedback, cold-feeling feedback, or thermal grill feedback. In addition, the type (constant voltage / reverse voltage) and magnitude of the voltage applied to the thermocouple group can be predetermined depending on the type and intensity of the thermal feedback.

That is, depending on the type and intensity of the thermal feedback, the operating power supplied to the thermocouple group for outputting the thermal feedback (hereinafter, the voltage and current of the operating power supply are referred to as an 'operating voltage' and a ' Can be determined.

In one embodiment of the present invention, the feedback device 1600 may obtain thermal feedback data from the content playback device 1200. The thermal feedback data may include information on the type and intensity of thermal feedback output from each thermo couple group, and output timing and / or end timing of the thermal feedback. The feedback device 1600 can determine the type and intensity of the thermal feedback output from the thermocouple group based on the thermal feedback data

In addition, the feedback device 1600 may apply a short-circuit power source to the thermoelectric couple group, which is larger than the predetermined operation power source, based on the type and intensity of the thermal feedback for a predetermined time (S4220). Here, the uniaxial power source may mean a power source applied to shorten the response time (hereinafter, the voltage and current of the uniaxial power source are referred to as 'uniaxial voltage' and 'uniaxial current', respectively). At this time, the uniaxial power source may be in the same direction as the operating power source. That is, when the operating power source is a constant voltage, the uniaxial power source is a constant voltage, and when the operating power source is a reverse voltage, the uniaxial power source may be a reverse voltage.

As described above, when the thermal feedback of specific intensity is output to the thermocouple group, the temperature of the contact surface of the thermocouple group can reach the saturation temperature corresponding to the thermal feedback of the specific intensity through the response time from the initial temperature have. However, due to the response time, the user may experience a delay in sensing the thermal feedback. Accordingly, the feedback device 1600 may apply a uniaxial voltage that is greater in magnitude than the operating voltage corresponding to the thermal feedback of the specific intensity for a predetermined period of time in order to shorten the response time, Can be shortened.

In addition, the feedback device 1600 may apply the operating voltage to the thermocouple group after the predetermined time has elapsed (S4230). However, the magnitude of the uniaxial voltage applied to shorten the response time to the thermocouple group, the application time of the uniaxial voltage (i.e., the predetermined time), and the like may vary depending on various situations, for example, Type, and strength.

Hereinafter, an implementation example of a method of shortening the response time of thermal feedback in various situations will be described. For the sake of convenience of explanation, the case where the warm-feeling feedback is outputted in the thermocouple group will be described below. However, the present invention is not limited thereto, and the following description will be made on the assumption that cold feedback or thermal grill feedback is outputted The present invention is not limited thereto.

4.1. Implementation of a method for shortening the response time of thermal feedback

FIG. 43 is a graph showing a change in applied voltage and a change in temperature at a contact surface according to a method for shortening the response time of thermal feedback when the warm-up feedback is output in the thermocouple group according to the embodiment of the present invention.

Referring to FIG. 43, the thermocouple group can output the warm-feeling feedback of the first intensity. To this end, the feedback device 1600 may apply an operating voltage (first constant voltage in the example of FIG. 43) for outputting warm feedback of the first intensity to the thermocouple group. As the operating voltage is applied to the thermocouple group, the temperature of the contact surface of the thermocouple group can reach the first saturation temperature at the end of the first response time. Accordingly, the response time of the thermal feedback applied to the thermocouple group from the first time point to the first response time point-in-time (hereinafter referred to as a first response time) can be obtained.

In an embodiment of the present invention, the feedback device 1600 may perform a thermal feedback response time reduction method in order to shorten the response speed. Specifically, the feedback device 1600 can apply a short-circuit voltage (second constant voltage in the example of FIG. 43) having a higher voltage value than the operating voltage between a first time point and a second time point that are predetermined time intervals . As the uniaxial voltage is applied to the thermocouple group, the temperature of the contact surface of the thermocouple group can rise according to the second reference temperature curve 4320. That is, the temperature rising speed of the contact surface when the uniaxial voltage is applied to the thermocouple group in the interval between the first and second time points may be faster than the temperature rising rate of the contact surface when the operating voltage is applied to the thermocouple group . The feedback device 1600 may stop application of the uniaxial voltage at a second time point and apply an operating voltage to the thermocouple group. As a result, the temperature rising speed of the contact surface of the thermocouple group after the second time point becomes slower than the temperature rise speed of the contact surface of the thermocouple group from the first time point to the second time point, The first saturation temperature can be reached. At this time, the second response time end point may be earlier than the first response time end point. This is because the second positive voltage higher than the first constant voltage is applied to the thermoelectric couple group from the first point to the second point. Therefore, the time from the first time point to the second response time point-in-time may be the response time (hereinafter referred to as the second response time), and the second response time may be shorter than the first response time. Accordingly, the user can feel warm feedback by the shortening time which is the difference between the first response time and the second response time. Further, when the temperature of the contact surface of the user's sensory thermocouple group quickly reaches the target temperature, rather than the temperature gradually reaches the target temperature, the degree of perception of the user by the thermal feedback can be improved. Thus, by shortening the response time by application to the second constant voltage, the user can more reliably recognize the thermal feedback.

In the embodiment of the present invention, the magnitude of the uniaxial voltage (second constant voltage in the example of FIG. 43) applied for shortening the response time can be predetermined. For example, the uniaxial voltage is a voltage having an intensity one level higher than an intended voltage (i.e., the first constant voltage in the example of FIG. 43) representing the voltage of the target intensity, as in the example of FIG. 43 Or may be a voltage several times higher than the operating voltage. In addition, the uniaxial voltage may be predetermined regardless of the intensity of the thermal feedback. For example, the uniaxial voltage may be higher than the operating voltage by a predetermined value. Further, the ratio of the operating voltage and the uniaxial voltage may be predetermined.

Further, as the uniaxial voltage is predetermined, the temperature corresponding to the uniaxial voltage (the second saturation temperature in the example of Fig. 43) can also be predetermined.

Likewise, the temperature corresponding to the uniaxial voltage may be a predetermined temperature for the output of the thermal feedback of a predetermined intensity, or a temperature not related to the thermal feedback of the predetermined intensity. In addition, the temperature corresponding to the uniaxial voltage may be higher than the saturation temperature according to the operating voltage by a predetermined value, and the ratio of the saturation temperature depending on the operating voltage and the temperature corresponding to the uniaxial voltage may be predetermined.

Further, in an embodiment of the present invention, the feedback device 1600 can determine the magnitude of the uniaxial voltage such that the temperature of the contact surface does not exceed the saturation temperature according to the operating voltage. If the temperature of the contact surface exceeds the saturation temperature according to the operating voltage, the user may misunderstand that the thermal feedback of different intensity is outputted. In one embodiment, the feedback device 1600 can determine the magnitude of the uniaxial voltage so that the temperature of the contact surface does not reach the saturation temperature according to the operating voltage while the uniaxial voltage is applied. If the temperature of the contact surface does not reach the saturation temperature according to the operating voltage while the uniaxial voltage is applied, the temperature of the contact surface does not exceed the saturation temperature after the application of the uniaxial voltage and the operating voltage.

Further, in the embodiment of the present invention, the time point at which the application of the uniaxial voltage is stopped, that is, the time point at which the operating voltage is applied, can be determined in advance. In one embodiment of the present invention, the point of time when the application of the uniaxial voltage is stopped may be determined according to the magnitude of the changing temperature indicating the temperature of the contact surface at the second time point. In other words, since the point of time when the application of the uniaxial voltage is stopped affects the magnitude of the change temperature, the point of time when the application of the uniaxial voltage is stopped can be predetermined in consideration of the relationship between the point of time when the application of the uniaxial voltage is stopped and the change temperature have. For example, the feedback device 1600 may stop applying the uniaxial voltage when the temperature of the contact surface 1641 reaches a predetermined change temperature.

Further, as another example, the feedback device 1600 can determine the time at which the application of the uniaxial voltage is stopped, i.e., the shortened time application time, so that the temperature of the contact surface does not reach the saturation temperature according to the operating voltage while the uniaxial voltage is applied have. As described above, if the temperature of the contact surface does not reach the saturation temperature according to the operating voltage while the uniaxial voltage is applied, after the application of the uniaxial voltage and the operating voltage is applied, the temperature of the contact surface exceeds the saturation temperature .

However, according to the embodiment, the time point at which the application of the uniaxial voltage and the uniaxial voltage is stopped can be determined so that the changing temperature is lower than the saturation temperature according to the operating voltage.

Further, in another embodiment of the present invention, the time for stopping the application of the uniaxial voltage may be determined based on the target intensity. For example, when the target intensity is the first intensity, the time for stopping application of the uniaxial voltage may be t seconds, and when the target intensity is the second intensity, the time for stopping application of the uniaxial voltage is t + a sec (Or ta seconds).

Further, according to the embodiment of the present invention, whether to apply a voltage applied to the thermocouple group for response time reduction can be determined according to the intensity of the thermal feedback, that is, the magnitude of the operating voltage. For example, when the intensity of the thermal feedback is lower than the predetermined intensity, the temperature of the contact surface can quickly reach the saturation temperature even if the uniaxial voltage is not applied. In this case, since the effect of shortening the response time by applying the uniaxial voltage is small, the feedback device 1600 may not apply the uniaxial voltage when the intensity of the thermal feedback is lower than the predetermined intensity. Similarly, when the intensity of the thermal feedback is higher than the predetermined intensity, since the effect of shortening the response time according to application of the uniaxial voltage is high, the feedback device 1600 shortens the response time when the intensity of the thermal feedback is higher than the predetermined intensity To apply the unipolar voltage to the thermocouple group.

FIG. 44 is a graph showing a change in applied voltage and a change in temperature at a contact surface according to a method for shortening the response time of thermal feedback when the warm-up feedback is output in the thermocouple group according to another embodiment of the present invention.

Referring to Fig. 44, the feedback device 1600 can apply an operating voltage (first constant voltage in the example of Fig. 44) for outputting warm feedback of the first intensity to the thermocouple group, May reach the first saturation temperature at the end of the first response time. Accordingly, the time from the first time point to the first response time point-in-time can be the response time (hereinafter referred to as a first response time t _r1 ) of the thermal feedback applied to the thermocouple group.

Further, in the embodiment of the present invention, the feedback device 1600 outputs a first uniaxial voltage (the second constant voltage in the example of Fig. 44) having a voltage value larger than the first operation voltage between the first point and the second point, And the temperature of the contact surface of the thermocouple group rises along the second reference temperature curve 4420 so that the first saturation temperature can be reached at the second response time end time faster than the first response time end time have. (Hereinafter referred to as a second response time (t _r2 )) to be applied to the thermocouple group from the first time point to the second response time end point, and the first response time (t _r1 ) The second response time can be shortened by the first shortening time.

Further, in another embodiment of the present invention, the feedback device 1600 is configured to output, between the first and second time points, a second uniaxial voltage having a higher voltage value than the first uniaxial voltage (in the example of Fig. 44, And the temperature of the contact surface of the thermocouple group rises in accordance with the third reference temperature curve 4430 so that the first saturation temperature can be reached at the third response time end that is earlier than the second response time end point can of claim and the first to third response time-out time from 1 point to be the response time of the thermal feedback is applied to the thermocouple groups (hereinafter referred to as a third response time (DELTA t _r3)), a in comparison to the first response time, the 3 response time can be shortened by the second shortening time. Further, the third response time can be shorter than the second response time.

Likewise, the response time can be shortened even when the fourth constant voltage or the fifth constant voltage, which is larger than the first constant voltage, is applied between the first point and the second point of time.

In an embodiment of the present invention, the temperature difference between the temperature value at the end of application of the uniaxial voltage and the first saturation temperature may be within a predetermined range. For example, the temperature difference between the temperature value at the second time point and the first saturation temperature at which the application of the uniaxial voltage is terminated can be varied according to the magnitude of the uniaxial voltage. For example, the if the second constant voltage to the speed voltage between the first point and the second point is a first temperature difference (DELTA T _d1) is generated and, if the speed voltage is applied to the fifth voltage, the fourth temperature difference (ㅿ T _d4 ) can occur. At this time, the first temperature difference may be larger than the fourth temperature difference. This is because the temperature difference between the temperature value at the second time point and the first saturation temperature becomes narrower as the temperature increase rate becomes higher as the magnitude of the uniaxial voltage increases.

In a specific embodiment of the present invention, the temperature value at the second time point may be preset at a specific rate of the first saturation temperature. For example, the temperature value at the second time point when the uniaxial voltage is the fifth constant voltage is 95% of the first saturation temperature, the temperature value at the second time point when the uniaxial voltage is the fourth constant voltage is the first saturation temperature The temperature value at the second time point when the uniaxial voltage is the third constant voltage is 85% of the first saturation temperature, and the temperature value at the second time point when the uniaxial voltage is the second constant voltage is the first saturation temperature Of the total. In one experimental example, the recognition degree of the user's thermal feedback was improved when the ambient temperature was at room temperature and the temperature value at the second time point when the uniaxial voltage was applied was 70% or more of the first saturation temperature. This is because the response time is shortened as the temperature value at the second time point approaches the first saturation temperature. That is, as the temperature value at the second time point approaches the first saturation temperature, the temperature change amount felt by the user increases, and thus the degree of recognition of the user's thermal feedback can be improved. According to the experimental example, in order to improve the user's perception, the magnitude of the uniaxial voltage may be set to a voltage value at which the temperature value at the second time point becomes 70% or more and less than 100% of the first saturation temperature.

In another specific embodiment of the present invention, the first application time for applying the uniaxial voltage and the voltage (the first constant voltage in the example of Fig. 44) that is not the uniaxial voltage until the temperature of the contact surface reaches the first saturation temperature The ratio of the applied second application time can be set in advance. For example, the ratio of the first application time to the second application time may be set to 1: X (where X is a number of 1 or less). Of course, in another embodiment, the ratio of the first application time to the second application time may be set to 1: Y (where Y is a number greater than 1). In one experimental example, when the ambient temperature is at room temperature and the ratio of the first application time to the second application time is set to 1: Z (where Z is 0.05 or more and 0.95 or less) The degree of recognition was improved. Accordingly, according to the embodiment, the ratio of the first application time and the second application time may be set to 1: Z (where Z is 0.1 or more and 0.9 or less) for the user's perception improvement.

Further, in an embodiment of the present invention, the ratio of the uniaxial voltage (the second constant voltage to the fifth constant voltage) and the first constant voltage may be set in advance. For example, the second constant voltage may have a magnitude equal to or less than twice the magnitude of the first constant voltage.

Further, in the embodiment of the present invention, the temperature value at the second time point corresponding to each uniaxial voltage may be stored in advance for each of the plurality of uniaxial voltages. In this case, the feedback device 1600 may refer to the previously stored information to set the voltage magnitude of the uniaxial voltage such that the temperature value at the second time point reaches a specific temperature.

In summary, the larger the magnitude of the voltage applied at the first time point to the second time point, that is, the uniaxial voltage for shortening the response time, the shorter the response time of the thermal feedback. Thus, the user can experience the thermal feedback in a shorter time.

However, when the magnitude of the uniaxial voltage is greater than the predetermined threshold voltage value, the temperature of the contact surface of the thermo couple group may be higher than the first saturation temperature. In an embodiment of the present invention, the feedback device 1600 may adjust the magnitude of the uniaxial voltage such that the temperature of the contact surface of the thermocouple group is not higher than the first saturation temperature.

FIG. 45 is a diagram showing a change in applied voltage and a temperature change in a contact surface according to a method of shortening the response time of thermal feedback when the warm-up feedback is output in the thermocouple group according to another embodiment of the present invention.

Referring to Figure 45, the feedback device 1600 may apply an operating voltage (first constant voltage in the example of Figure 45) for outputting warm feedback of the first intensity to the thermocouple group, May reach the first saturation temperature at the end of the first response time. Accordingly, the time from the first time point to the first response time point-in-time can be the response time (hereinafter referred to as a first response time) of the thermal feedback applied to the thermocouple group.

Further, in the embodiment of the present invention, the feedback device 1600 can apply a short-circuit voltage (second constant voltage in the example of FIG. 45) having a higher voltage value than the operating voltage between the first and second points of time And the temperature of the contact surface of the thermocouple group rises in accordance with the second reference temperature curve 4520 to reach the first saturation temperature at a second response time end that is earlier than the first response time end point. The time from the first time point to the second response time point-in-time can be the response time of the thermal feedback applied to the thermocouple group (hereinafter referred to as the second response time t _r2 ) _r1 ), the second response time can be shortened by the first shortening time.

Also, in the embodiment of the present invention, the feedback device 1600 may apply the uniaxial voltage from the first time point to the third time point after the second time point. In this case, the temperature of the contact surface rises along the second reference temperature curve 4520 to the third point, and the first saturation temperature can be reached at the third response time end point earlier than the second response time point. The time from the first time point to the third response time point-in-time may be the response time of the thermal feedback applied to the thermocouple group (hereinafter referred to as the third response time t _r3 ) 3 response time can be shortened by the second shortening time. Also, the third response time (t _r3 ) may be shorter than the second response time.

Similarly, the response time can be shortened even when the uniaxial voltage is applied to the fourth or fifth point of time after the third point of time.

In an embodiment of the present invention, the temperature difference between the temperature value at the end of application of the uniaxial voltage and the first saturation temperature may be within a predetermined range. For example, the temperature difference between the temperature value at the time when the application of the uniaxial voltage is terminated and the first saturation temperature may vary depending on the time when the uniaxial voltage is applied. For example, a short voltage in this case is applied from a first point to a second point, the first temperature difference between the second time point temperature value and the first saturation temperature in (DELTA T _d1) is generated, and the speed voltage is first if applied from the time up to the fifth point in time, it can result in a fourth temperature difference (DELTA T _d4) between the fifth point temperature value and the first saturation temperature at the. At this time, the first temperature difference may be larger than the fourth temperature difference. This is because the temperature rise speed when the uniaxial voltage is applied is faster than the non-uniaxial voltage, that is, the temperature rise rate when the first constant voltage is applied.

In a specific embodiment of the present invention, the temperature value at the time when the application of the uniaxial voltage is terminated can be preset to a specific ratio of the first saturation temperature. For example, the temperature value at the fifth time point when the uniaxial voltage is applied to the fifth time point is 95% of the first saturation temperature, and the temperature value at the fourth time point when the uniaxial voltage is applied to the fourth time point is 90% of the first saturation temperature, the temperature value at the third time point when the uniaxial voltage is applied to the third time point is 85% of the first saturation temperature, and at the second time point when the uniaxial voltage is applied until the second time point May be 80% of the first saturation temperature. In one experimental example, the recognition of the user's thermal feedback was improved when the ambient temperature was at room temperature and the temperature value at the end of application of the uniaxial voltage was 70% or more of the first saturation temperature.

This is because the response time is shortened as the temperature value at the end of the application of the uniaxial voltage approaches the first saturation temperature. That is, as the temperature value at the end of the application of the uniaxial voltage approaches the first saturation temperature, the temperature change amount felt by the user increases, and the degree of recognition of the user's thermal feedback can be improved. According to the experimental example, the time for which the uniaxial voltage is applied may be set up to a time point at which the temperature value reaches 70% or more, 70% or less, and less than 100% of the first saturation temperature.

Further, in another specific embodiment of the present invention, the first application time for applying the uniaxial voltage and the voltage (the first constant voltage in the example of Fig. 45) that is not the uniaxial voltage until the temperature of the contact surface reaches the first saturation temperature The ratio of the applied second application time can be set in advance. For example, the ratio of the first application time to the second application time may be set to 1: X (where X is a number of 1 or less). Of course, in another embodiment, the ratio of the first application time to the second application time may be set to 1: Y (where Y is a number greater than 1). In an experimental example, when the ambient temperature is at room temperature, when the ratio of the first application time to the second application time is set to 1: Z (where Z is 0.05 or more and 0.9 or less) The degree of recognition was improved. Accordingly, according to the embodiment, the ratio of the first application time and the second application time may be set to 1: Z (where Z is 0.05 or more and 0.95 or less) for the user's perception improvement.

Further, in the embodiment of the present invention, a temperature value according to the time when each uniaxial voltage is applied may be stored in advance for each of a plurality of uniaxial voltages. In this case, the feedback device 1600 can refer to the previously stored information and set the application time of the uniaxial voltage so that the uniaxial voltage is applied until the temperature of the contact surface reaches a specific temperature.

Further, in another embodiment of the present invention, the feedback device 1600 may include a temperature sensor capable of sensing the temperature of the contact surface. In this case, the feedback device 1600 measures the temperature of the contact surface using a temperature sensor after application of the uniaxial voltage so that the temperature of the contact surface reaches a certain temperature (for example, 70% of the first saturation temperature) , The application of the uniaxial voltage can be terminated.

In summary, the response time of the thermal feedback can be shortened as the time for applying the uniaxial voltage is increased. Thus, the user can experience the thermal feedback in a shorter time.

However, when the time for which the uniaxial voltage is applied exceeds the predetermined threshold time, the temperature of the contact surface of the thermocouple group may be higher than the first saturation temperature. In an embodiment of the present invention, the feedback device 1600 may adjust the time that the uniaxial voltage is applied so that the temperature of the contact surface of the thermocouple group is not higher than the first saturation temperature.

FIG. 46 is a diagram showing a change in applied voltage and a change in temperature at a contact surface according to a method of shortening the response time of thermal feedback when cold feedback is output in a thermo couple group according to an embodiment of the present invention. FIG.

Referring to FIG. 46, cold feedback of the first intensity can be output in the thermocouple group. To this end, the feedback device 1600 may apply an operating voltage (first inverse voltage in the example of FIG. 46) for outputting the cold feedback of the first intensity to the thermocouple group, The temperature of the contact surface can reach the first saturation temperature at the end of the first response time. In this case, the time from the first time point to the first response time point-in-time may be the response time of the thermal feedback applied to the thermocouple group (hereinafter referred to as a first response time).

As in the case where the warm-feeling feedback is outputted in the thermocouple group, the feedback device 1600 is a method of shortening the thermal feedback response time, and between the first time point and the second time point, which is a predetermined time interval, (In the example of FIG. 46, the second reverse voltage) can be applied. As the uniaxial voltage is applied to the thermocouple group, the temperature of the contact surface of the thermocouple group is lower than the temperature lowering rate of the contact surface when the first reverse voltage is applied to the thermocouple group, according to the second reference temperature curve 4620 It can be descended at high speed. The feedback device 1600 may stop applying the short-circuit voltage at a second time point and apply an operating voltage to the thermocouple group. As a result, the temperature lowering speed of the contact surface of the thermocouple group after the second time point becomes slower than the temperature lowering speed of the contact surface of the thermocouple group from the first time point to the second time point, Lt; RTI ID = 0.0 > saturation < / RTI >

The second response time end point may be earlier than the first response time end point as in the case where warm feedback is output in the thermocouple group. The time from the first time point to the second response time point-in-time may be the response time (hereinafter referred to as the second response time), and the second response time may be shorter than the first response time. Accordingly, the user can experience the cold feedback by the shortening time which is the difference between the first response time and the second response time.

In the embodiment of the present invention, the magnitude of the uniaxial voltage applied for shortening the response time can be predetermined, the temperature corresponding to the uniaxial voltage can also be predetermined, and the time point at which the application of the uniaxial voltage is stopped, The time point of applying the operating voltage, which is the voltage, can be predetermined.

Also, in the embodiment of the present invention, a voltage having a higher voltage value than the short-circuit voltage may be applied to the first time point to shorten the response time. With respect to these various implementations, the contents described in FIGS. 43 to 45 can be applied as they are, so that a detailed description will be omitted

FIG. 47 is a graph showing changes in applied voltage and temperature at a contact surface according to a method of reducing the response time of thermal feedback when thermal grill feedback is output in the thermocouple group according to the embodiment of the present invention. FIG.

Referring to FIG. 47, thermal grill feedback of a first intensity may be output in the first thermocouple group and the second thermocouple group. When the neutral ratio is set to 2, the feedback device 1600 applies a first operating voltage (first constant voltage in the example of FIG. 47) for outputting warm feedback of the first intensity to the first thermocouple group, And a second operating voltage (fourth inverse voltage in the example of FIG. 47) for outputting the cold feedback of the second intensity to the second thermocouple group can be applied. Accordingly, the temperature of the contact surface of the first thermocouple group reaches the first saturation temperature at the end of the first response time, and the temperature of the contact surface of the second thermocouple group reaches the second saturation temperature Lt; / RTI > In this case, the time from the first time point to the first response time point-in-time can be the response time of the thermal grill feedback (hereinafter referred to as the first response time) output from the first thermo couple group and the second thermo couple group.

In addition, the feedback device 1600 is a method of shortening the thermal feedback response time. In the first thermocouple group, between the first time point and the second time point, which is a predetermined time interval, (Second constant voltage in the example of FIG. 48) is applied to the second thermocouple group, and a second uniaxial voltage (fourth reverse voltage) having a larger voltage magnitude than the second operation voltage can be applied to the second thermocouple group.

As the first uniaxial voltage is applied to the first thermocouple group, the temperature of the contact surface of the first thermocouple group is lower than the temperature of the first thermocouple group when the first operating voltage is applied to the first thermocouple group in accordance with the second reference temperature curve 4720 It can rise at a speed faster than the temperature rising speed of the contact surface. As the second uniaxial voltage is applied to the second thermocouple group, the temperature of the contact surface of the second thermocouple group is set such that the second operating voltage is applied to the second thermocouple group in accordance with the fourth reference temperature curve 4740 The temperature of the contact surface can be lowered at a rate higher than the temperature lowering rate. Thus, the temperature of the contact surface of the first thermocouple group reaches the first saturation temperature at the end of the second response time, which is earlier than the end time of the first response time, and the temperature of the contact surface of the second thermocouple group, The second 'saturation temperature can be reached at the end of time. That is, the time from the first time point to the second response time point-in-time may be the response time (hereinafter referred to as the second response time), and the second response time may be shorter than the first response time. The user can experience the heat grill feedback as fast as the shortening time which is the difference between the first response time and the second response time.

However, for convenience of explanation, the time point when the temperature of the contact surface of the first thermocouple group reaches the first saturation temperature and the temperature of the contact surface of the second thermocouple group reaches the second 'saturation temperature is the first response But the present invention is not limited thereto. The time point at which the temperature of the contact surface of the first thermo couple group reaches the first saturation temperature and the time point when the temperature of the second thermoelectric couple group reaches the second temperature The point of time at which the temperature of the contact surface of the pair group reaches the second 'saturation temperature may not coincide. Of course, also in this case, when the method of shortening the response time of thermal feedback is performed, the time at which the temperature of the contact surface of the first thermocouple group reaches the first saturation temperature and the temperature of the contact surface of the second thermocouple group become the second ' As the time to reach the saturation temperature is shortened, the response time to thermal grill feedback is shortened and the user can experience thermal grill feedback more quickly.

4.2. Providing a thermal experience with reduced response time

In an embodiment of the present invention, it may be important to output appropriate thermal feedback in accordance with the playback of the multimedia content in order to provide a more improved thermal experience to the user. For example, it may be important to provide warm feedback in an explosion scene and cold feedback in a cold scene by interlocking the screen to be reproduced with thermal feedback at the time of moving picture reproduction.

Concretely, when thermal feedback is linked to video or audio when reproducing moving image contents, it may be important that the thermal feedback coincides with the synchronization of the thermal feedback with the specific scene or the specific sound to which the thermal feedback is to be linked. For example, in the case where warm-feeling feedback is felt during the reproduction of the explosion scene, it is preferable that the video-output timing of the explosion scene coincides with the sensation-feeling timing of the warm-feeling feedback, or the user experience may be deteriorated.

However, if the feedback device 1600 applies the power for the thermal feedback output at the time of output of a specific scene, a time difference may occur between the output timing of the specific scene and the sensation timing of the thermal feedback. This is because even if power is applied to the thermocouple group, it takes some time for the temperature of the contact surface 1641 to reach the temperature at which the user can experience the thermal feedback. That is, since the power application time point and the user's feeling of thermal feedback may not coincide with each other, when the output time point of a specific scene is matched with the power application time point, the sync between the image and the thermal feedback is shifted. Hereinafter, the time taken from the start of thermoelectric conversion for thermal feedback to the bodily sensation of the thermal feedback will be referred to as a " delay time ".

Hereinafter, a specific scene in which the user experience is improved by interlocking with thermal feedback will be referred to as a thermal event scene. A thermal event scene typically involves events in the real world that involve heat, such as an explosion or a gunshot, but it is not necessarily the case and may include all scenes that can be interlocked with thermal feedback to improve user engagement have. Likewise, a specific voice that is enhanced by the user experience by being interlocked with thermal feedback will be referred to as a thermal event voice.

In the embodiment of the present invention, according to the thermal feedback response time reduction method, the time difference between the output timing of the specific scene and the thermal feedback feedback point can be reduced. 48 is a diagram of a thermal feedback output operation according to an embodiment of the present invention.

Referring to FIG. 48, (a) relates to a thermal feedback output operation when the thermal feedback response time reduction method is not performed. (a), when power is applied to the thermo couple group at the start of the thermal feedback, the temperature of the contact surface of the thermo pair group can reach the bodily sensation temperature at the initial temperature for the first delay time. A thermal event scene can be reproduced in the content reproduction device 1200 at the time when the bodily sensation temperature is reached. Thereafter, the temperature of the contact surface may reach the saturation temperature, and the response time may be from the start of the thermal feedback to the arrival of the saturation temperature.

(b) relates to a thermal feedback output operation when a thermal feedback response time reduction method is performed. (b), power can be applied to the thermocouple group at the start of the thermal feedback, as shown in (a). In this case, when the temperature of the contact surface of the thermocouple group changes from the thermal feedback start time to the second response time The saturation temperature can be reached. At this time, by performing the thermal feedback response time reduction method, the second response time may be shorter than the first response time of (a). In addition, as the second response time becomes shorter, the surface temperature reaches the bodily sensation temperature at an earlier point in time, and the second delay time indicating the time from the start of the thermal feedback to the bodily sensation temperature point-in-time can also be shortened.

(a) and (b), when the thermal feedback is started at the same time, the thermal event start time can be accelerated as the delay time is shortened when the thermal feedback response time reduction method is performed. That is, depending on whether the thermal feedback response time reduction method is performed or not, it can be determined whether or not the thermal event scene replay timing coincides with the thermal event timing. For example, when the thermal feedback response time reduction method is performed, if the thermal feedback start time is not adjusted, the synchronization between the thermal event scene playback point and the thermal event may be out of sync.

Hereinafter, a method of providing a thermal experience in consideration of a shortened response time point when the thermal event response time reduction method is performed will be described.

FIG. 49 is a flowchart of a method for providing a thermal experience considering a reduced response time according to an embodiment of the present invention. FIG.

Referring to FIG. 49, a thermal experience providing method considering shortened response time includes loading video contents including thermal event scenes and thermal feedback data including thermal feedback interlocked with thermal event scenes (S4910), outputting an image in accordance with the image data (S4920), obtaining a time point at which the thermal feedback is sensed (S4930), calculating a correction time in consideration of the response time of the thermal feedback (S4950) of calculating the start time of thermal feedback based on the sensed time of the feedback and the correction time, sending (S4960) a thermal feedback start signal at the start of the thermoelectric action, (S4970) initiating thermoelectric operation for the output of step S4970.

Hereinafter, each step of the above-described embodiment will be described in more detail.

The content reproduction device 1200 may load the video content including the thermal event scene and the video content including the thermal feedback data including the thermal feedback interlocked with the thermal event scene (S4910).

Specifically, the controller 1260 may load the video content stored in the memory 1240 or receive the video content through the communication module 1220 in a downloading method or a streaming method.

The video content may include video data and thermal feedback data. Here, the moving picture content may be provided as one file including the video data and the thermal feedback data, but the moving picture content may be provided in a form including a moving picture file including the moving picture data and a separate file including the thermal feedback data have.

The video data includes information about the scene to be output at the time of reproducing the video content. Also, a thermal event scene may be included in a scene to be output.

The thermal feedback data includes information about thermal feedback to be output at the time of reproducing the moving image content, that is, thermal feedback information. For example, the thermal feedback information may include information about the thermal feedback object, the type of thermal feedback, the thermal feedback strength, and the timing of the thermal feedback reduction. According to the embodiment, the thermal feedback braking time point may be set at the same time as the reproduction time point of the thermal event scene.

The content reproduction device 1200 can output an image according to the image data (S4920). For example, the controller 1260 may decode video data using an image codec and output an image. Video output can be performed via an external or internal display.

The content reproduction device 1200 may acquire a point at which the thermal feedback is sensed (S4930). Specifically, the controller 1260 can obtain a point at which the user should experience thermal feedback from the thermal feedback data. Here, the time of the thermal feedback feedback may be the same as the output time of the specific scene to be interlocked with the thermal feedback.

The content reproduction device 1200 can calculate the correction time in consideration of the response time of the thermal feedback. Here, the correction time may be a time interval from the power application time point when the power is applied to the thermocouple group to the time point at which the temperature of the contact surface 1641 becomes the temperature at which the user can feel the thermal feedback.

Specifically, as described above, the delay time can be shortened when the thermal feedback response time reduction method is performed in the feedback device 1600. [ Accordingly, the controller 1260 can determine the delay time in consideration of whether or not the thermal feedback response time reduction method is performed in the feedback device 1600.

To that end, the controller 1260 may obtain information about the response time of the feedback device 1600 in the feedback device 1600 via the communication module 1220. [ When the thermal feedback response time reduction method is performed in the feedback device 1600, the controller 1260 can shorten the correction time corresponding to the shortened delay time. For example, when a correction time table is stored in advance in the memory 1240 and a correction time corresponding to the delay time shortened in the correction time table is stored, the controller 1260 refers to the previously stored correction time table The correction time can be determined. Further, the correction time table may be set to have different correction times for different kinds of thermal feedback and / or thermal feedback, and the information about the delay time shortened in the correction time may be reflected. In this case, the controller 1260 can determine the correction time with reference to the previously stored correction time table

Also, if the feedback device 1600 stores correction time information reflecting a delay time that is shortened by itself, the controller 1260 may receive the correction time information from the feedback device 1600 and set the correction time by referring to the correction time information There will be.

Also, since feedback device 1600 may be set to different degrees of response time reduction for each feedback device 1600, depending on the unique characteristics, controller 1260 may take into account the identification information of feedback device 1600 The correction time may also be determined. To this end, the controller 1260 obtains the identification information of the feedback device 1600 via the communication module 1220, obtains the delay time of the feedback device 1600 through the identification information of the feedback device 1600, The correction time can be determined based on the delay time.

In addition, the content reproduction device 1200 may calculate the start time of the thermoelectric action for thermal feedback based on the sensed time of the thermal feedback and the corrected time (S4950). Specifically, the controller 1260 can calculate the start time of the thermoelectric action for thermal feedback by subtracting the correction time from the time of the sensation of the thermal feedback.

The content reproduction device 1200 may transmit a thermal feedback start signal at the start of the thermoelectric operation for thermal feedback (S4960). When the start time of the thermoelectric conversion operation is determined, the controller 1260 controls the communication module 1220 to display the time when the current reproduction time (hereinafter referred to as 'reproduction time' A thermal feedback start signal may be transmitted to the feedback device 1600. [

Feedback device 1600 may initiate a thermal feedback output operation in accordance with the start signal of thermal feedback (S4970).

50 is a diagram illustrating a thermal feedback output operation of the thermal experience providing method in consideration of the reduced response time according to the embodiment of the present invention.

Figure 50 (a) shows the thermal feedback output operation when the response time shortened in the feedback device 1600 is not performed, (b) shows the thermal feedback operation in which the response time shortened in the feedback device 1600 is considered Output operation.

Specifically, in (b), the feedback device 1600 applies power to the thermocouple group at the time of receipt of the start signal (which is substantially the same as the start time of the thermoelectric action). At this time, the reception time of the start signal is considered in response time which is shortened through the thermal experience providing method described in FIG. The thermocouple group performs an exothermic or endothermic operation from the moment the thermocouple group power is applied. When the correction time elapses from the power application time point, the temperature of the contact surface 1641 reaches a temperature at which the user can feel the thermal feedback. Accordingly, the user can feel the thermal feedback at the output timing of the thermal event scene at the playback time of the multimedia contents.

(a), the correction time in (b) may be shorter than the correction time in (a). This is because the delay time in (b) is shorter than that in (a). Even if the delay time is shortened, since the shortened delay time is reflected in the correction time, the point of time at which the temperature of the contact surface reaches the bodily sensation temperature in (a) and (b) can be matched.

Accordingly, even when the thermal feedback response time reduction method is performed as shown in (b), the feedback device 1600 is controlled by the content reproduction device 1200 to reflect the shortened delay time, It is possible to start the thermoelectric operation by applying power to the thermoelectric element at the start time of the thermoelectric action set at the time point before the output point of the scene, and to allow the user to experience the thermal feedback at the output time of the specific front.

In the above description, the synchronization of the image and the thermal feedback is described as a reference in the above embodiment, but it is also possible to synchronize the voice and the thermal feedback by replacing the image with voice. This can be easily understood by those skilled in the art by replacing the video data, the thermal event scene with the audio data, the thermal event audio.

51 is a flowchart of a method for providing a thermal experience in consideration of a shortened response time according to another embodiment of the present invention.

Referring to FIG. 51, the thermal experience providing method considering shortened response time includes the steps of obtaining thermal feedback data (S5110), determining the start time of thermal feedback in consideration of a shortened delay time of thermal feedback And initiating a thermal feedback output operation at the start of the thermal feedback (S5130).

Hereinafter, each step of the above-described embodiment will be described in more detail.

The feedback device 1600 may obtain thermal feedback data from the content playback device 1200 (S5110). The thermal feedback data may include information on the type and intensity of thermal feedback output from each thermo couple group, and output timing and / or end timing of the thermal feedback.

In addition, the feedback device 1600 may determine the start time of the thermal feedback in consideration of the shortened delay time of the thermal feedback (S5120).

In an embodiment of the present invention, when the thermal feedback response time reduction method is performed in the feedback device 1600, the delay time that indicates the time between the start of the thermal feedback and the time when the user experiences the thermal feedback is shortened have. In some cases, the thermal feedback output time included in the thermal feedback data may not reflect the shortened delay time. In this case, when the thermal feedback is started according to the thermal feedback output timing included in the thermal feedback data, the synchronization of the thermal event scene and the thermal feedback is shifted as the user's sensation time becomes faster, and the user experience may be hindered. In order to solve this problem, the feedback device 1600 can determine the thermal feedback starting point based on the thermal feedback output time included in the thermal feedback data and the delay time shortened.

In one example, information about a shortened delay time (or shortened response time) may be stored in advance in the memory of the feedback device 1600, and the feedback device may generate a thermal feedback data based on the information on the shortened delay time It is possible to determine the starting point of the thermal feedback by correcting the thermal feedback output timing included in the thermal feedback output timing.

In addition, feedback device 1600 may initiate a thermal feedback output operation at the start of thermal feedback (S5130). The starting point of the thermal feedback is corrected based on the delay time shortened in the feedback device 1600 so that the synchronization of the thermal event scene and the thermal feedback is matched and the user experience can be improved

5. How to shorten the termination time of thermal feedback

Hereinafter, a method for reducing the termination time of the thermal feedback according to the embodiment of the present invention will be described. Here, the termination time may mean the time taken for the temperature of the contact surface of the thermoelectric couple group, which is changed by the output of the thermal feedback, to return to the initial temperature when the thermal feedback ends. The method of reducing the end time of the thermal feedback can be understood as a method of shortening the end time.

Specifically, in the heat output module 1640, since the thermoelectric couple group 1644, the contact surface 1641, and the like have a predetermined heat capacity, when the heat generating operation or the heat absorbing operation is started as the power source is applied, The temperature does not reach the saturation temperature immediately upon application of power but gradually changes from the initial temperature to reach the saturation temperature. Likewise, when the power supply is interrupted to stop the heat generating operation or the heat absorbing operation, the temperature of the contact surface 1641 changes gradually from the saturation temperature to the initial temperature, and then returns to the initial temperature.

In this case, since the temperature of the contact surface 1641 gradually returns from the saturation temperature to the initial temperature, the user can feel unnecessary heat. For example, when the thermal output module 1640 outputs a warmth feedback of the fifth intensity, the saturation temperature of the contact surface 1641 may be increased to the saturation temperature of the warmth feedback of the fifth intensity, and the output of the warmth feedback The temperature of the contact surface 1641 may drop from the saturation temperature of the warmth feedback of the fifth intensity to the initial temperature. At this time, as the temperature 1641 of the contact surface is gradually lowered, the user unintentionally feels warm feedback of the fourth intensity to the first intensity. The warm feedback of the fourth intensity to the first intensity is an unnecessary heat for the user, which hinders the user's thermal experience.

However, in this case, if the feedback device 1600 performs the end time reduction method of the thermal feedback, if the end time is shortened, the temperature of the contact surface 1641 quickly reaches the initial temperature do.

Thus, as the end time is shortened, the user does not feel unnecessary heat and the user's thermal experience can be improved.

Hereinafter, a method of reducing the termination time of the thermal feedback will be described. In the following description, it is assumed that the end time reduction method is performed in the feedback device 1600 for convenience of explanation. However, the present invention is not limited to this, and the end time reduction method may be performed in the content reproducing device 1200 or may be performed by a third device other than the feedback device 1600 and the content reproducing device 1200. [

52 is a flowchart illustrating a method of reducing the end time of thermal feedback according to the embodiment of the present invention.

52 includes a step S5210 of confirming the output end point of the thermal feedback and a step S520 of applying the end power to the thermoelectric couple group for a predetermined time from the end of the output of the thermal feedback can do.

Specifically, the feedback device 1600 can confirm the output end time of the thermal feedback (S5210). The kind of the thermal feedback may be any one of warm feeling feedback, cold sense feedback, or thermal grill feedback. In addition, the type (constant voltage / reverse voltage) and magnitude of the voltage applied to the thermocouple group can be predetermined depending on the type and intensity of the thermal feedback.

In one embodiment of the present invention, the feedback device 1600 may obtain thermal feedback data from the content playback device 1200. The thermal feedback data may include information on the type and intensity of thermal feedback output from each thermo couple group, and output timing and / or end timing of the thermal feedback. The feedback device 1600 may determine the output end time of the thermal feedback output from the thermocouple group based on the thermal feedback data.

Also, the feedback device 1600 may apply the termination power to the thermocouple group for a predetermined time from the end of the output of the thermal feedback (S5220).

The feedback device 1600 stops applying the power for the output of the thermal feedback in order to shorten the end time which is the time it takes for the temperature of the contact surface of the thermocouple group changed by the output of the thermal feedback to return to the initial temperature But it is possible to apply the end power for a predetermined time at the end of the output of the thermal feedback. Here, the termination power source is a power source (hereinafter, voltage and current of the termination power source are referred to as 'termination voltage' and 'termination current', respectively) applied in order to shorten the time at which the temperature of the contact surface reaches the initial temperature, . ≪ / RTI > In addition, the termination power source may be opposite to the power source applied for the output of the thermal feedback (hereinafter referred to as an 'operating power source', and the voltage and current of the operating power source are referred to as 'operating voltage' and 'operating current' . For example, if the operating voltage is a constant voltage, the termination voltage can be a reverse voltage, and conversely, if the operating voltage is a reverse voltage, the termination voltage can be a constant voltage.

As the feedback device 1600 applies termination power to the thermocouple group for a predetermined time from the end of the output of the thermal feedback, the temperature of the contact surface can reach the initial temperature at a faster time, Can be shortened. In addition, the feedback device 1600 may terminate the application of the end power after the predetermined time has elapsed.

However, the magnitude of the termination power applied to shorten the termination time, the duration of the termination power supply (i.e., the predetermined time), and the like may vary depending on various conditions, for example, the type and intensity of thermal feedback output from the thermocouple group Can vary.

Hereinafter, an implementation example of a method of reducing the termination time of thermal feedback in various situations will be described. For the sake of convenience of explanation, the case where the warm-feeling feedback is outputted in the thermocouple group will be described below. However, the present invention is not limited thereto, and the following description will be made on the assumption that cold feedback or thermal grill feedback is outputted The present invention is not limited thereto.

5.1. Implementation of a method of shortening the termination time of thermal feedback

FIG. 53 is a diagram showing a change in applied voltage and a temperature change in a contact surface according to a method of shortening a termination time of thermal feedback in the case of outputting warm feedback in a thermocouple group according to an embodiment of the present invention.

Referring to FIG. 53, the feedback device 1600 may apply an operating voltage (first constant voltage in the example of FIG. 53) for outputting warm feedback to the thermocouple group. Accordingly, the temperature of the contact surface of the thermocouple group can be a saturation temperature. Also, the feedback device 1600 can confirm the output stop time of the warm-up feedback to the first time point, and can stop the application of the first constant voltage at the first time point to interrupt the output of the warm-up feedback. Accordingly, the temperature of the contact surface can be gradually lowered along the first reference temperature curve 5310 at the saturation temperature to reach the initial temperature gradually. In this case, the time point at which the temperature of the contact surface reaches the initial temperature from the first time point can be the end time of the thermal feedback (hereinafter referred to as the first end time).

In an embodiment of the present invention, the feedback device 1600 may perform a thermal feedback end time reduction method in order to shorten the end time. Specifically, the feedback device 1600 may apply a termination voltage (a first reverse voltage in the example of FIG. 53) between a first point of time at which the thermal feedback output ends and a predetermined second point of time. At this time, the termination voltage may be opposite to the operating voltage. As the termination voltage is applied between the first point of view and the second point of view, the temperature of the contact surface may fall along the second reference temperature curve 5320. As the temperature of the contact surface is lowered along the second reference temperature curve 5320, the temperature lowering rate of the contact surface when a termination voltage is applied to the thermocouple group in the interval between the first and second time points, May be faster than the temperature lowering speed of the contact surface when the termination voltage is not applied. In this case, the time point at which the temperature of the contact surface reaches the initial temperature from the first time point may be the end time of the thermal feedback (hereinafter referred to as the second end time), and the second end time may be shorter than the first end time. As a result, when the feedback device 1600 performs the thermal feedback end time reduction method, the end time of the thermal feedback can be shortened by the time difference between the first end time and the second end time. Accordingly, as the end time is shortened, the user does not feel unnecessary heat due to the end of the thermal feedback, and the thermal experience of the user can be improved.

In an embodiment of the present invention, the magnitude of the termination voltage may be predetermined. For example, the termination voltage may be the same as the operating voltage and intensity, and may be higher or lower than the operating voltage, as in the example of FIG. However, the direction of the termination voltage may be opposite to the operating voltage.

In an embodiment of the present invention, the feedback device 1600 may determine the magnitude of the termination voltage such that the changing temperature does not exceed the initial temperature. If the change temperature exceeds the initial temperature, the user may misunderstand that the thermal feedback previously output is different from the thermal feedback. In one embodiment, the feedback device 1600 may determine the magnitude of the termination voltage such that the temperature of the contact surface does not reach the initial temperature while the termination voltage is applied. If the temperature of the contact surface does not reach the initial temperature while the termination voltage is applied, the temperature of the contact surface does not exceed the initial temperature after the termination of the application of the termination voltage.

Further, in the embodiment of the present invention, the termination voltage may be determined according to the magnitude of the thermal feedback, that is, the magnitude of the operating voltage. For example, when the magnitude of the operating voltage is the second constant voltage as the intensity of the thermal feedback is the second intensity, the termination voltage may be the second reverse voltage. Also, when the intensity of the thermal feedback is the third intensity, the magnitude of the operating voltage may be a third constant voltage greater than the second constant voltage, and the termination voltage may be a third reverse voltage greater than the second reverse voltage. On the other hand, when the intensity of the thermal feedback is the first intensity, the magnitude of the operating voltage may be a first constant voltage lower than the second constant voltage, and the termination voltage may be a first reverse voltage lower than the second reverse voltage.

Further, according to the embodiment, the termination voltage may be predetermined regardless of the intensity of the thermal feedback.

Further, in the embodiment of the present invention, the time point at which the application of the termination voltage is stopped can be predetermined. In one embodiment of the present invention, the time point of stopping the application of the end voltage may be determined according to the magnitude of the change temperature indicating the temperature of the contact surface at the second time point. In other words, since the time of stopping the application of the end voltage affects the magnitude of the change temperature, the time point at which the application of the end voltage is stopped can be predetermined in consideration of the relationship between the time point at which the application of the end voltage is stopped and the change temperature have. For example, the feedback device 1600 may stop applying the termination voltage when the temperature of the contact surface 1641 reaches a predetermined change temperature.

Further, the time point at which the application of the end voltage is stopped (i.e., the time at which the end voltage is applied) can be determined before the change temperature reaches the initial temperature. As described above, if the change temperature exceeds the initial temperature, the user may misunderstand that the thermal feedback other than the previously outputted thermal feedback is outputted. Thus, the feedback device 1600 can determine when to stop applying the termination voltage so that the changing temperature does not exceed the initial temperature. In one embodiment, the feedback device 1600 can determine when to stop applying the termination voltage so that the temperature of the contact surface does not reach the initial temperature while the termination voltage is applied. If the temperature of the contact surface does not reach the initial temperature while the termination voltage is applied, the temperature of the contact surface does not exceed the initial temperature after the termination of the application of the termination voltage.

Further, in another embodiment of the present invention, the time point at which the application of the end voltage is terminated can be determined based on the intensity of the thermal feedback. For example, if the intensity of the thermal feedback is the first intensity, the time to stop applying the end voltage may be t seconds, and if the intensity of the thermal feedback is the second intensity, t + a seconds (or ta seconds).

Further, according to an embodiment of the present invention, whether or not the termination voltage is applied to the thermocouple group can be determined according to the magnitude of the thermal feedback, that is, the magnitude of the operating voltage. For example, when the intensity of the thermal feedback is lower than the predetermined intensity, the temperature of the contact surface can quickly reach the initial temperature even if the end voltage is not applied. In this case, the feedback device 1600 may not apply the termination voltage when the intensity of the thermal feedback is lower than the predetermined intensity because the effect of shortening the termination time according to the application of the termination voltage is small. Similarly, when the intensity of the thermal feedback is higher than the predetermined intensity, the effect of shortening the termination time due to the application of the termination voltage is high, so that the feedback device 1600 shortens the termination time when the intensity of the thermal feedback is higher than the predetermined intensity The termination voltage can be applied to the thermocouple group.

FIG. 54 is a diagram illustrating a change in applied voltage and a temperature change in a contact surface according to a method of shortening the termination time of thermal feedback when the warm-up feedback is output in the thermocouple group according to another embodiment of the present invention.

Referring to FIG. 54, the feedback device 1600 applies an operating voltage (first constant voltage in the example of FIG. 54) for outputting warm feedback to the thermocouple group, The application of the operating voltage can be stopped. Thus, the temperature of the contact surface can fall along the first reference temperature curve 5410 at the saturation temperature and reach the initial temperature after the first end time has elapsed.

Further, in the embodiment of the present invention, the feedback device 1600 may apply the first end voltage (the first reverse voltage in the example of Fig. 54) between the first point and the second point of time. As the first end voltage is applied, the temperature of the contact surface can drop along the second reference temperature curve 5420 between the first and second time points. As the temperature of the contact surface descends along the second reference temperature curve 5420, the temperature of the contact surface can reach the initial temperature after a second end time period that is shorter than the first end time.

Further, in the embodiment of the present invention, the feedback device 1600 outputs a second end voltage (in the example of FIG. 54, the second end voltage having a larger magnitude of the voltage value than the first end voltage, Voltage) can be applied. As the second end voltage is applied between the first time point and the second time point, the temperature of the contact surface falls along the third reference temperature curve 5430, so that the temperature of the contact surface is lower than the third end temperature The initial temperature can be reached after the end time has elapsed.

In summary, the larger the magnitude of the termination voltage, the shorter the termination time of thermal feedback. Thus, the user may not feel unnecessary heat due to the termination of the thermal feedback.

However, if the magnitude of the termination voltage is greater than a predetermined threshold voltage value, the temperature of the contact surface may be lower than the initial temperature. If the temperature of the contact surface is lower than the initial temperature, the feedback device 1600 may adjust the magnitude of the termination voltage so that the temperature of the contact surface of the thermocouple group does not become lower than the initial temperature, since the user may feel unnecessary cold feeling.

FIG. 55 is a diagram illustrating a change in applied voltage and a temperature change in a contact surface according to a method for shortening a termination time of thermal feedback in the case of outputting warm feedback in a thermocouple group according to another embodiment of the present invention. FIG.

55, the feedback device 1600 applies an operating voltage (first constant voltage in the example of FIG. 55) for outputting the warm-feeling feedback to the thermocouple group, and then, at the first time point The application of the operating voltage can be stopped. Accordingly, the temperature of the contact surface can be lowered along the first reference temperature curve 5510 at the saturation temperature to reach the initial temperature after the first end time has elapsed.

Further, in the embodiment of the present invention, the feedback device 1600 may apply the end voltage (the first reverse voltage in the example of FIG. 55) between the first point and the second point. As the termination voltage is applied, the temperature of the contact surface can fall along the second reference temperature curve 5520 between the first and second time points. As the temperature of the contact surface descends along the second reference temperature curve 5520, the temperature of the contact surface can reach the initial temperature after a second end time period that is shorter than the first end time.

Also, in an embodiment of the present invention, the feedback device 1600 may apply a termination voltage from a first time point to a third time point. The temperature of the contact surface may drop along the second reference temperature curve 552 from the first time point to the third time point beyond the second time point as the end voltage is applied until the third time point after the second time point. Thereby, the temperature of the contact surface can reach the initial temperature after the elapse of the third end time shorter than the second end time.

In summary, the more time the end voltage is applied, the shorter the end time of the thermal feedback. Thus, the user may not feel unnecessary heat due to the termination of the thermal feedback.

However, when the time for which the end voltage is applied exceeds a predetermined threshold time, the temperature of the contact surface of the thermocouple group may be lower than the initial temperature. In an embodiment of the present invention, the feedback device 1600 may adjust the time at which the termination voltage is applied so that the temperature of the contact surface of the thermocouple group is not lower than the initial temperature.

FIG. 56 is a graph showing a change in applied voltage and a change in temperature at a contact surface according to a method for shortening a termination time of thermal feedback when cold feedback is output in a thermocouple group according to an embodiment of the present invention. FIG.

56, the feedback device 1600 applies an operating voltage (first inverse voltage in the example of FIG. 56) for outputting the cold feedback to the thermocouple group, and then outputs the first The application of the operating voltage can be stopped at the time point. Accordingly, the temperature of the contact surface can rise along the first reference temperature curve 5610 at the saturation temperature and reach the initial temperature after the first end time elapses.

Also, as in the case where warm-temper- ature feedback is output in the thermocouple group, the feedback device 1600, as a thermal feedback termination time shortening method, is provided with a termination voltage (in the example of Fig. 56, Constant voltage) can be applied.

As the termination voltage is applied, the temperature of the contact surface of the thermocouple group is set such that the temperature of the contact surface in the case where the termination voltage is not applied to the thermocouple group according to the second reference temperature curve 5620 between the first and second time points It can rise faster than the rising speed. As the temperature of the contact surface rises along the second reference temperature curve 5620, the temperature of the contact surface can reach the initial temperature after a second end time lapse that is shorter than the first end time. Thereby, the end point of the cold feedback is accelerated by the shortening time which is the difference between the first end time and the second end time.

In an embodiment of the present invention, the magnitude of the termination voltage can be predetermined, and the time point at which the application of the termination voltage is stopped, i.e., the time point at which the operating voltage is applied, can be predetermined.

Also, in the embodiment of the present invention, a voltage having a high end voltage value may be applied at a first time point to further shorten the end time. With respect to these various implementations, the contents described with reference to FIGS. 53 to 55 may be applied as they are, and a detailed description thereof will be omitted

FIG. 57 is a graph showing a change in applied voltage and a temperature change at a contact surface according to a method of shortening the end time of thermal feedback when thermal grill feedback is output in the thermocouple group according to the embodiment of the present invention. FIG.

Referring to Figure 57, feedback device 1600 may output thermal grill feedback of a first intensity in a first thermocouple group and a second thermocouple group. When the neutral ratio is set to 2, the feedback device 1600 applies a first operating voltage (first constant voltage in the example of FIG. 57) for outputting warm feedback of the first intensity to the first thermocouple group, A first operating voltage (second inverse voltage in the example of FIG. 57) for outputting the cold feedback of the second intensity can be applied to the second thermocouple group. Thereby, the temperature of the contact surface of the first thermocouple group reaches the first saturation temperature, and the temperature of the contact surface of the second thermocouple group can reach the second 'saturation temperature.

Also, when the output of the thermal grill feedback at the first time is terminated, the feedback device 1600 may terminate the application of the first operating voltage and the second operating voltage at a first time. Accordingly, the temperature of the surface area of the first thermocouple group falls in accordance with the first reference temperature strength 5710, the temperature of the surface area of the second thermocouple group rises in accordance with the third reference temperature strength 5730, The temperature of the surface area of the first thermocouple group and the temperature of the surface area of the second thermocouple group can reach the initial temperature after the first end time elapses.

In addition, the feedback device 1600 can be used as a thermal feedback termination time reduction method, between the first and second points of time,

The first end voltage (first reverse voltage in the example of FIG. 57) for ending the output of the warm-tempered feedback of the first intensity is applied to the first thermocouple group and the first end voltage The second end voltage for ending the output (the second constant voltage in the example of Fig. 57) can be applied.

As the first end voltage is applied to the first thermocouple group, the temperature of the contact surface of the first thermocouple group falls in accordance with the second reference temperature curve 5720, so that the first end voltage is applied to the first thermocouple group The temperature can be lowered faster than the temperature lowering speed of the contact surface. Also, as the second end voltage is applied to the second thermocouple group, the temperature of the contact surface of the second thermocouple group is set such that the second end voltage is not applied to the second thermocouple group in accordance with the fourth reference temperature curve 5740 The temperature of the contact surface can rise faster than the temperature rise rate of the contact surface. Thus, the temperature of the contact surface of the first thermocouple group and the temperature of the contact surface of the second thermocouple group can reach the initial temperature at the second end time shorter than the first end time.

For convenience of explanation, it is explained that the point of time when the temperature of the contact surface of the first thermocouple group reaches the initial temperature and the point of time when the temperature of the contact surface of the second thermocouple group reaches the initial temperature mutually coincide. However, The time point at which the temperature of the contact surface of the first thermocouple group reaches the initial temperature and the point at which the temperature of the contact surface of the second thermocouple group reaches the initial temperature may not coincide with each other. For example, in order for cooling feedback to be output in the second thermocouple group, when electrical energy is applied to the second thermocouple group, some of the electrical energy induces an endothermic reaction while the remaining portion is converted to thermal energy. Here, the part directly converted into thermal energy is discharged through the heat sink or the like connected to the back surface of the thermoelectric element, but a part thereof remains in the thermoelectric element in the form of residual heat. In some cases, due to the residual heat, the temperature of the contact surface of the second thermocouple group can reach the initial temperature faster than the temperature of the contact surface of the first thermocouple group.

As another example, the temperature difference between the initial temperature and the first saturation temperature may be greater than the temperature difference between the initial temperature and the second saturation temperature. Due to this temperature difference, the temperature of the contact surface of the first thermocouple group may reach the initial temperature more quickly than the temperature of the contact surface of the second thermocouple group, as the case may be.

As described above, even if the temperature of the contact surface of the first thermocouple group and the temperature of the contact surface of the second thermocouple group reach the initial temperature,

When the method of shortening the end time of the thermal feedback in the feedback device 1600 is performed, the time at which the temperature of the contact surface of the first thermocouple group reaches the initial temperature and the temperature of the contact surface of the second thermocouple group reach the initial temperature As the time is shortened, i.e., the output end time of the thermal grill feedback is shortened, the user may not feel unnecessary heat.

5.2. Output of continuous thermal feedback

FIG. 58 is a diagram showing the applied voltage and the temperature change at the contact surface when the warm feedback is continuously output in the thermocouple group according to the embodiment of the present invention. FIG.

Referring to FIG. 58, (a) relates to the output operation of continuous warm feedback when the method of shortening the end time of thermal feedback is not performed. (a), the feedback device 1600 acquires thermal feedback data from the content reproduction device 1200 and, in accordance with the thermal feedback data, supplies a working voltage (first constant voltage in FIG. 58) Up to the point of time. Accordingly, the temperature of the contact surface of the thermocouple group can be a saturation temperature. Also, in accordance with the thermal feedback data, the feedback device 1600 may stop applying the operating voltage at a first time point, and the temperature of the contact surface falls during the first response time to reach the initial temperature at the first end time . At this time, the feedback device 1600 may apply the operating voltage to the thermocouple group in order to output the second warming feedback at the third time point, in accordance with the thermal feedback data. If the temperature of the contact surface at the third time point was the initial temperature, as the operating voltage is applied to the thermocouple group, the temperature of the contact surface can be saturated at the first saturation point. However, in (a), the third point of time may precede the first point, and the temperature of the contact point at the third point of time may be higher than the initial temperature. Accordingly, when the operating voltage is applied to the thermocouple group at the third time point, the temperature of the contact surface can reach the saturation temperature at the second saturation point earlier than the first saturation point. Also, as the time to reach the saturation temperature is shortened, the point at which the user senses the thermal feedback through the contact surface may precede the user's tactile impression time at the content reproduction device 1200.

In an embodiment of the present invention, the time of the user's tactile sensation intended by the content reproduction device 1200 may coincide with the timing of the user feeling the thermal feedback through the contact surface. If the intended user's tact time is inconsistent with the user's sensed tact time through the contact surface, the thermal event scene playback time may be coincident with the thermal event scene playback timing, The sink between the viewpoint and the point at which the user senses the thermal feedback through the contact surface is not suitable and the thermal experience of the user may be hindered.

Therefore, in (a), the time when the user senses the thermal feedback through the contact surface is ahead of the intention of the user, so the thermal experience of the user may be hindered.

(b) relates to the output operation of continuous warm feedback when a method of shortening the end time of thermal feedback is performed. (b), the feedback device 1600 acquires thermal feedback data from the content reproduction device 1200 and, in accordance with the thermal feedback data, supplies a working voltage (first constant voltage in FIG. 58) Up to the point of time. Also, according to the thermal feedback data, the feedback device 1600 can apply the end point (the first reverse voltage in FIG. 58) to the time between the first point and the second point. Accordingly, the temperature of the contact surface can be lowered during the second response time, and can reach the initial temperature at the second end time point preceding the first end time point.

At this time, as in (a), the feedback device 1600 may apply the operating voltage to the thermocouple group in order to output the second warming feedback at the third time point according to the thermal feedback data. However, unlike in (a), the temperature of the contact surface may be the initial temperature at the third time point. Thus, the temperature of the contact surface can be saturated at the first saturation point by the operating voltage. That is, unlike in (a), the time to reach the saturation temperature may not be shortened. Accordingly, the time point at which the user senses the thermal feedback through the contact surface may not be shortened. As a result, the time point at which the user tries to feel the thermal feedback through the contact surface, Can be matched.

Since the intention of the user can be coincided with the timing of the thermal event scene reproduction, in (b), the timing of the thermal event scene playback and the timing of the user sensing the thermal feedback through the contact surface coincide with each other, .

In summary, as the termination time of the first thermal feedback is shortened by the method of shortening the termination time of the thermal feedback, the point at which the output of the subsequent second thermal feedback can be started can be accelerated. (a), the output of the second thermal feedback should be started after the first end point, but in (b), after the second end point before the first end point, Even if the output of thermal feedback is initiated, the thermal experience of the user may not be hindered.

Thus, when the thermal feedback termination time reduction method is performed, output of continuous thermal feedback in a shorter time period may be possible.

The method according to an embodiment may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions to be recorded on the medium may be those specially designed and configured for the embodiments or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. For example, it is to be understood that the techniques described may be performed in a different order than the described methods, and / or that components of the described systems, structures, devices, circuits, Lt; / RTI > or equivalents, even if it is replaced or replaced.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

Claims (23)

A feedback device that outputs thermal feedback by transmitting heat generated by a thermoelectric action including at least one of a heat generating operation and a heat absorbing operation of the thermoelectric element to which the power is supplied to the user through a contact surface that contacts the user's body part As a method of providing thermal feedback,
Applying operating power to the thermoelectric element for outputting the thermal feedback;
Confirming the end point of the thermal feedback;
So that the speed at which the temperature of the contact surface changed in accordance with the output of the thermal feedback reaches an initial temperature which is a temperature before the start of the output of the thermal feedback is increased for a predetermined time from the end of the thermal feedback, Applying a termination power for output termination of thermal feedback; And
Stopping the application of the end power after the predetermined time has elapsed
/ RTI >
Providing thermal feedback.
The method according to claim 1,
The termination power supply,
Wherein the power supply is a power supply in a direction opposite to the operating power supply.
Providing thermal feedback.
The method according to claim 1,
The direction of the end power source and the direction of the operating power source are opposite,
Wherein the voltage magnitude of the termination power supply is equal to the magnitude of the voltage of the operating power supply.
Providing thermal feedback.
The method according to claim 1,
The termination power supply,
The direction of the end power source and the direction of the operating power source are opposite,
Characterized in that the voltage magnitude of the termination power supply is different from the voltage magnitude of the operating power supply.
Providing thermal feedback.
The method according to claim 1,
Wherein the step of applying the termination power comprises:
And the end power supply is in the form of a duty signal.
Providing thermal feedback.
The method according to claim 1,
In the step of applying the end power,
When a first end voltage having a first voltage magnitude is applied to the thermoelectric element,
The temperature of the contact surface is,
Characterized in that the initial temperature is reached faster than when applying a second termination voltage having a second voltage magnitude to the thermoelectric element, the second voltage magnitude being less than the first voltage magnitude.
Providing thermal feedback.
The method according to claim 1,
In the step of applying the end power,
When the end voltage is applied for the first time period from the end point,
The temperature of the contact surface is,
Characterized in that the initial temperature is reached to the thermoelectric element faster than when the termination voltage is applied during the second time period from the end point to the end of the second time period,
Providing thermal feedback.
The method according to claim 1,
In the step of applying the end power,
And the end power is applied so that the temperature of the contact surface does not exceed the initial temperature after reaching the initial temperature.
Providing thermal feedback.
9. The method of claim 8,
In the step of applying the end power,
And determines the voltage magnitude of the termination power source such that the temperature of the contact surface does not reach the initial temperature for the predetermined time when the termination power is applied.
Providing thermal feedback.
9. The method of claim 8,
In the step of applying the end power,
Wherein the time of the small intestine is determined so that the temperature of the contact surface does not reach the initial temperature for the predetermined time when the end power is supplied.
Providing thermal feedback.
The method of claim 1, wherein
When the thermal feedback is gentle feedback for making the user feel warm,
Wherein the operating voltage is a constant voltage causing the heating operation in the thermoelectric element,
Wherein the termination voltage is an inverse voltage opposite to the constant voltage.
Providing thermal feedback.
The method according to claim 1,
If the thermal feedback is cold feedback to make the user feel cold,
Wherein the operating voltage is a reverse voltage causing the heat absorbing operation in the thermoelectric element,
And the termination voltage is a constant voltage opposite to the reverse voltage.
Providing thermal feedback.
The method according to claim 1,
Wherein the thermoelectric element is provided in a thermocouple array comprising a plurality of individually controllable thermo couple pairs,
Wherein the end power is applied to at least one of the plurality of thermocouple groups in the step of applying the end power.
Providing thermal feedback.
The method according to claim 1,
If the thermal feedback is thermal grill feedback that makes the user feel conscious,
Wherein the thermocouple array comprises a first thermo-couple group and a second thermo-couple group that are individually controllable,
In the step of applying operating power to the thermoelectric element,
A first constant voltage generating a heat generating operation in the first thermo couple group is applied to the first thermo couple group,
A first reverse voltage generating a heat absorbing operation in the first thermo couple group is applied to the second thermo couple group,
In the step of applying the end power,
A second reverse voltage that is opposite to the first constant voltage is applied to the first thermocouple group,
And a second constant voltage in a direction opposite to the first reverse voltage is applied to the second thermocouple group.
Providing thermal feedback.
The method according to claim 1,
The step of confirming the end point may include:
Obtaining thermal feedback data from an external device, the thermal feedback data including at least one of a type or an intensity of the thermal feedback; And
Confirming the end point based on the thermal feedback data
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Providing thermal feedback.
The method according to claim 1,
When the second thermal feedback is output after the first thermal feedback is output in the feedback device,
In the step of applying operating power to the thermoelectric element,
A time point at which the application of the operating power for outputting the second thermal feedback to the thermoelectric device can be determined is determined according to the time until the temperature of the contact surface reaches the initial temperature after the output of the first thermal feedback is completed ≪ / RTI >
Providing thermal feedback.
The method according to claim 1,
Wherein the step of applying the termination power comprises:
And the end voltage is applied so that the temperature change amount of the contact surface during the predetermined time when the end voltage is applied is larger than the temperature change amount of the contact surface after the application of the end power is stopped.
Providing thermal feedback.
The method according to claim 1,
Wherein the feedback device is capable of adjusting the intensity of the thermal feedback to a plurality of intensities,
And applying the termination power only when the intensity of the thermal feedback is equal to or greater than a predetermined intensity.
Providing thermal feedback.
19. The method of claim 18,
Wherein the feedback device is capable of adjusting the intensity of the thermal feedback to a plurality of intensities,
Obtaining the strength of the thermal feedback;
Generating the operating power based on the magnitude of the thermal feedback; And
Determining whether or not the end power is applied depending on whether the intensity of the thermal feedback is equal to or greater than a predetermined intensity
Providing thermal feedback.
A computer-readable recording medium having recorded thereon a program for performing the method according to any one of claims 1 to 19.
A thermoelectric element for performing a thermoelectric operation including at least one of a heat generating operation and an endothermic operation, a power terminal for supplying a power for the thermoelectric conversion to the thermoelectric element, And a thermal output module for outputting thermal feedback by transmitting heat generated by the thermoelectric action to the user through the contact surface; And
Wherein when the output of the thermal feedback is ended, the temperature of the contact surface changed in accordance with the output of the thermal feedback is a temperature before the thermal feedback starts to be output A feedback controller for applying a termination power for terminating the output of the thermal feedback to the thermoelectric element at a first time point so as to quickly reach the initial temperature,
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Feedback device.
A feedback device operable in conjunction with a content playback device for driving multimedia content, the feedback device providing thermal feedback to provide a thermal experience associated with the multimedia content,
A communication module for communicating with the content reproduction device;
A thermoelectric element for performing a thermoelectric operation including at least one of a heat generating operation and an endothermic operation, a power terminal for supplying a power for the thermoelectric conversion to the thermoelectric element, And a thermal output module for outputting thermal feedback by transmitting heat generated by the thermoelectric action to the user through the contact surface; And
Receiving information on the thermal feedback from the content reproduction device via the communication module, selecting an operation voltage among a plurality of predetermined voltage values based on the intensity of the thermal feedback according to the information about the thermal feedback, Generating an operating power source based on the operating voltage, applying the operating power to the power terminal so that the thermal output module outputs the thermal feedback, and when the output of the thermal feedback is terminated, And a feedback controller for applying a termination power for terminating the output of the thermal feedback to the thermoelectric element at a first time so that the temperature of the raised contact surface quickly reaches an initial temperature which is a temperature before the output of the thermal feedback starts,
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Feedback device.
A method for providing multimedia content to a user, the method comprising: receiving a multimedia content from a user; receiving a multimedia content from the multimedia content; As a gaming controller,
A casing including a grip portion gripped by a user and forming an appearance of the gaming controller;
An input module for receiving a user input according to an operation of the user;
A communication module for communicating with the content reproduction device;
A power supply terminal for supplying power to the thermoelectric element, and a contact surface for transmitting heat generated by the thermoelectric action of the thermoelectric element to the user, the contact surface being provided in the grip portion, A thermal output module for outputting the thermal feedback by transmitting heat generated by the thermoelectric operation to the user; And
Acquiring the user input received through the input module, transmitting the user input to the content reproduction device via the communication module, receiving information about the thermal feedback from the content reproduction device via the communication module Selecting an operating voltage among a plurality of predetermined voltage values based on the intensity of the thermal feedback according to the information about the thermal feedback, generating an operating power based on the operating voltage, The temperature of the contact surface raised according to the output of the thermal feedback is lower than the initial temperature that is the temperature before the thermal feedback is started to be output, when the output of the thermal feedback is ended, To the thermoelectric element at a first point in time, A controller for applying a final power supply for output end of feedback
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Gaming controller.

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