JP2007072507A - Image display device and operation control method of image display device using coordinate input/detection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operation means using a coordinate input/detection device, which is improved in operability and reliability. <P>SOLUTION: In the image display device using the coordinate input/detection device to be mounted integrally with a display screen of the image display device, the coordinate input/detection device comprises a means receiving a depression signal from an exclusive instructing tool. The coordinate input/detection device immediately executes an operating function of the image display device assigned to the operation means when it detects the depression signal in the receiving means in accordance with detection of a coordinate corresponding to a position of the operation means in a coordinate input/detection area, and determines no subsequent coordinate detection. When no depression signal is detected in accordance with detection of the coordinate corresponding to the position of the operation means, the coordinate input/detection device determines that no coordinate is detected after staying at the detected coordinate for a predetermined time, and then executes the operation function of the image display device assigned to the operation means. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an operation means and an operation method using a coordinate input / detection device, and more particularly, suitable for use in improving operability and reliability of an operation means using a coordinate input / detection device. It is.

  Used to control the connected computer and write characters, figures, etc. by directly pointing to the target position with a general purpose indicator such as a dedicated indicator or a finger on the input surface and inputting coordinates There is a coordinate input / detection device.

  There are various coordinate input / detection methods, such as those using a resistive film and those using ultrasonic waves. For example, an optical method is used as a method that does not use a dedicated indicator to enhance versatility. There is Japanese Patent Application Laid-Open No. H10-228707. In Patent Document 1, a retroreflective member is provided around the coordinate input / detection region, and the light irradiated from the light irradiation / light receiving means arranged at the corner end of the coordinate input / detection region is reflected by the retroreflective member. A method is disclosed in which the angle of the area shielded by an arbitrary instruction means in the coordinate input / detection area is detected by detecting the light amount distribution by the light receiving means, and the coordinates of the shielding position, that is, the input position are determined.

  Further, in Patent Document 1, a plurality of threshold values are provided for the input depth, and only coordinate detection is performed until a deep input of a certain level or more is determined. For example, the left click function in the mouse is realized.

  Such a coordinate input / detection device is mounted integrally with a display screen such as a rear projector or a plasma display panel, a PC screen is displayed on the display, and detected coordinate values and left-click operation information in the coordinate input / detection device are displayed. By sending it to a PC, it is possible to realize a pointing operation equivalent to a mouse operation more intuitively.

  When considering a substitute for a mouse, it is also required to realize a function equivalent to a right click. However, it is difficult to simultaneously realize the left click function and the right click function in the method of determining a pressed state by providing a plurality of threshold values for the input depth in Patent Document 1. Therefore, when considering completely substituting the mouse function on a PC, it is considered essential to have a dedicated indicator that can send multiple operation information such as left and right mouse clicks. Japanese Patent Application Laid-Open No. H10-228707 discloses an input / detection device including a dedicated pointing tool.

In Patent Document 2, the dedicated pointing tool has a light emitting function, and the light receiving means provided in the coordinate input / detection device detects the light emission signal of the dedicated pointing tool. By mediating the light emission signal acquisition operation, detection of information from the dedicated pointing tool and coordinate detection information is realized by a single light receiving means.
JP 2000-105671 A JP-A-2005-056341

  By the way, the coordinate input / detection area is expanded beyond the screen display area, and operation keys that operate the functions of the display itself are arranged in the expansion area, thereby configuring an operation key that does not require electrical and mechanical members. I can do it.

  It is essential that such an operation key can be operated with a general-purpose pointing tool. However, in a coordinate input / detection device that determines a pressed state by providing a plurality of threshold values for the input depth disclosed in Patent Document 1, for example, an operation is performed. When an unexpected object comes into contact with the key position, an operation key is input, and as a result, there is a problem that the display performs an unintended function such as channel switching.

  Therefore, it is desired to improve the reliability of the operation by using the coordinate input / detection device including the dedicated pointing tool disclosed in Patent Document 2, and to deal with the general-purpose pointing tool without malfunction.

  The present invention has been made in view of such problems of the prior art, and an object thereof is to provide an operation means using a coordinate input / detection device with improved operability and reliability.

  In order to solve this problem, the operation means of the image display device using the coordinate input / detection device mounted integrally with the display screen of the image display device according to the present invention is provided by pressing the coordinate input / detection device from the dedicated pointing tool. When a signal receiving means is provided, and in the coordinate input / detection area, when the coordinates corresponding to the position of the operating means are detected, the pressing signal receiving means detects the pressing signal, and then it is determined that the coordinates are not detected The operation function of the image display device assigned to the operation means is immediately executed, and when the pressing signal is not detected with the detection of the coordinates corresponding to the position of the operation means, after staying for a predetermined time at the detected coordinates It is determined that coordinate detection is no longer performed, and an operation function of the image display device assigned to the operation unit is executed.

  The effect | action by the said problem-solving means is as follows.

  That is, when the operating means is instructed with the dedicated pointing tool, the operator's intention is clear, so that the operability can be improved by executing the function assigned to the operating means at the same time as the operation is performed. . In addition, when the operation means is instructed with a general-purpose pointing tool, it is determined that the detection coordinate stays for a predetermined time, and further, it is determined that the coordinate detection is lost, thereby preventing malfunction due to unintended contact and reliability. Improvements can be made.

  As described above, according to the operation means of the image display device using the coordinate input / detection device mounted integrally with the display screen of the image display device according to the present invention, the operation means with improved operability and reliability is provided. I can do it.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a schematic block diagram of an image display device provided with a coordinate input / detection device. In FIG. 1, 1 is an image display device, 10 is an image signal I / F, 20 is an image processing unit, 30 is a control unit of the image display device 1, 40 is a control signal I / F, 100 is an image display unit, and 200 is It is a coordinate input / detection device.

  In this configuration, the image signal from the personal computer (hereinafter referred to as PC) 400 input via the image signal I / F 10 is processed by the image processing unit 20 for display on the image display unit 100, and the image display unit 100. Is displayed. Further, the image processing unit 20 is configured to be able to display an OSD image or an arbitrary image under the control of the control unit 30.

  The coordinate input / detection device 200 is arranged integrally with the image display unit 100, detects an instruction on a display screen by an arbitrary instruction means, and converts it into coordinate information by a control / arithmetic unit 201 described in detail later. Then, the coordinate information is sent to the control unit 30. Here, the coordinate detection means of the coordinate detection unit 200 is not particularly limited.

  FIG. 2 is a diagram showing a schematic configuration of the coordinate input / detection apparatus 200. In FIG. 2, 202 and 203 are sensor units provided with light irradiation / light receiving means. In this embodiment, as shown in the figure, the sensor units are installed with a predetermined distance at left and right symmetrical positions of the apex angle portion of the coordinate input / detection area 205. ing. The sensor units 202 and 203 are connected to a control / arithmetic unit 201 that controls / calculates the coordinate input / detection device 200, receives a control signal from the control / arithmetic unit 201, and controls the detected signal to the control / arithmetic unit 201. Send to.

  Reference numeral 204 denotes a retroreflecting unit having a retroreflective surface that reflects incident light in the direction of arrival, and directs light emitted from the left and right sensor units 202 and 203 to a range of approximately 90 ° toward the sensor units 202 and 203. To retroreflect. The retroreflective portion 204 has a three-dimensional structure when viewed microscopically. At present, the retroreflective portion 204 is a recursion that causes a recursive phenomenon by regularly arranging bead-type retroreflective tape or corner cubes by machining or the like. Reflective tape is known.

  The coordinate input / detection area 205 includes a display screen area 100 of the image display apparatus 1 and an operation means area 206 assigned with functions such as input switching and volume adjustment of the image display apparatus.

  In such a configuration, when an input instruction is given to the coordinate input / detection area 205 using a pointing tool such as a pen or a finger, the light emitted from the light irradiation unit provided in the sensor units 202 and 203 is blocked, and retroreflection is performed. The reflected light from the unit 204 cannot be obtained only at the input instruction position. As a result, it is possible to determine from which direction the light could not be detected.

  The control / arithmetic unit 201 detects the light-shielding range of the portion instructed to be input by the pointing tool from the light amount change detected by the sensor units 202 and 203, specifies the detection point within the light-shielding range, and detects the sensor unit 202. And the angle of the pointing tool with respect to each of 203 is calculated. Then, the pointing position of the pointing tool on the coordinate input / detection area 205 is calculated from the calculated angle and the distance between the sensor units, and the coordinate value is output to the control unit 30 of the image display device 1.

  Also, instead of a general-purpose indicator such as a finger, a dedicated indicator having a pen-down detection switch can be used. Reference numeral 300 shown in FIG. 2 denotes a light emitting pen as an example of such a dedicated pointing tool. When the pen tip switch 301 or the switch 302 provided on the pen side is pressed, an infrared LED (not shown) built in the light emitting pen 300 emits light and transmits switch information.

  The emitted optical signal is detected by a light receiving IC 207 having a condensing optical system, and the detection result is transmitted to the control / arithmetic unit 201. Then, the control / arithmetic unit 201 outputs the information of the optical signal to the control unit 30 of the image display device 1 together with the coordinate information of the light emitting pen 300. For example, a state in which a part of the coordinate input / detection area 205 is instructed with the light emitting pen 300 and the pen tip switch 301 is turned on is set as pen-down information.

  When the detected coordinates are on the image display area 100, the control unit 30 of the image display apparatus 1 outputs information such as coordinate information and pen down to the PC 400 connected to the image display apparatus 1, and uses the information. Thus, the PC 400 can be operated. When the detected coordinates are on the operation means area 206, the coordinate information and information such as pen down are taken in as control information of the image display apparatus 1, and the operation function of the image display apparatus 1 itself assigned to the operation means area 206 is acquired. Can be executed.

  FIG. 3 is a flowchart of the operation process according to the present embodiment. The processing according to the flowchart of FIG.

  First, a process when the first operation unit 205a located in the operation unit area 205 is instructed with the light emitting pen 300 which is a dedicated instruction tool will be described.

  In FIG. 3, the presence / absence of an instruction input is determined (step S100). When the instruction input is detected, the instruction coordinates are acquired (step S101). Next, it is determined whether or not the acquired coordinate is the operation unit area (step S110). If the acquired coordinate is the operation unit 205a area, it is determined whether or not the coordinate is moved (step S111). Here, when the instruction input detection in step S100 is new, or when the instruction input is continuously detected and the coordinates are compared with the immediately preceding detected coordinates and are within the operation unit 205a area, no coordinate movement is detected. Determination is made to determine whether or not there is a pen-down signal (step S112). If it is determined that there is a pen-down signal, the presence or absence of an instruction input is determined again (step S115), and if there is no instruction input, it is assigned to the operation means 205a. A function of the image display device 1, for example, a volume adjustment function is executed (S116). If it is determined in step S115 that the instruction input is continued, steps S100 to S115 are repeated until there is no instruction input. By the way, in step S111, when the coordinate acquired in step S101 moves from the immediately preceding detected coordinate and deviates from the operation means 205a area, the instruction input is invalidated as an abnormal input, and the process ends. The above processing is processed as a functional operation of the image display device 1 using a dedicated pointing tool.

  As a result of the determination in step S112, if it is determined that there is no pen-down signal, it is determined whether or not a predetermined time has elapsed (step S113). If the predetermined time has elapsed, the presence or absence of an instruction input is again determined (step S115). If there is no instruction input, the function of the image display device 1 assigned to the operation means 205a is executed (S116). If it is determined in step S113 that the predetermined time has not elapsed, the time is counted up or down (step S114), and the process returns to step S100. If the instruction input continues, there is no coordinate movement, and the predetermined time has not elapsed, Steps S100 to S114 are repeated. The above processing is processed as a functional operation of the image display device 1 using a general-purpose pointing tool such as a finger.

  As a result of the determination in step S100, if it is determined that the coordinate with the instruction input is not in the operation means, the coordinate information and information such as pen down are output to the connected PC 400 (step S120). The above processing is processed as sending coordinate information to the PC.

  As described above, according to the present embodiment, it is possible to provide an operation unit using a coordinate input / detection device that can be operated by a general-purpose instruction unit such as a finger. In addition, when the operation means is instructed by the general-purpose instruction means, the stay of a predetermined time is discriminated in order to prevent the operation. However, when the operation means is operated with the dedicated instruction tool, it is instructed with a clear intention. Operability and reliability can be improved by dividing the processing so as to eliminate the retention of time.

It is a schematic block diagram which shows the image display apparatus provided with the coordinate input / detection apparatus in this invention. It is a schematic block diagram which shows the coordinate input / detection apparatus in this invention. It is a flowchart which shows the process in the operation means of the image display apparatus using the coordinate input / detection apparatus of this invention.

Explanation of symbols

1 Image display device 10 Image signal I / F
20 Image processing unit 30 Control unit 40 Control signal I / F
DESCRIPTION OF SYMBOLS 100 Image display part 200 Coordinate input / detection apparatus 201 Control / arithmetic unit 202, 203 Sensor unit 204 Retroreflective part 205 Coordinate input / detection area 206 Operation means area 207 Light receiving IC
300 Luminescent pen 301 Pen tip switch 302 Pen side switch

Claims (4)

In an image display device using a coordinate input / detection device mounted integrally with a display screen of the image display device,
The coordinate input / detection device includes a pressing signal receiving unit from a dedicated pointing tool, and detects the pressing signal by the pressing signal receiving unit in accordance with the detection of the coordinates corresponding to the position of the operation unit in the coordinate input / detection area. Then, when it is determined that the coordinate detection is not performed thereafter, the operation function of the image display device assigned to the operation unit is immediately executed,
If a press signal is not detected along with the detection of the coordinates corresponding to the position of the operation means, it is determined that the coordinates are no longer detected after staying at the detected coordinates for a predetermined time, and the image assigned to the operation means Execute display device operation functions,
An image display device characterized by that.   The operation means is arranged outside a display screen area of the image display device, and the coordinate input / detection area includes a display screen area of the image display device and an arrangement area of the operation means. Image display device.   After detecting the coordinates corresponding to the position of the operating means, the detected coordinates are continuously changed, and when it is determined that the coordinates are not detected by deviating from the position of the operating means, the coordinates are assigned to the operating means. The image display device according to claim 1, wherein an operation function of the image display device is not executed. In an image display method using a coordinate input / detection device mounted integrally with a display screen of an image display device,
The coordinate input / detection device includes a pressing signal receiving step from a dedicated pointing tool, and detects a pressing signal in the pressing signal receiving step in accordance with the detection of coordinates corresponding to the position of the operation means in the coordinate input / detection area. A step of determining whether or not the detected coordinates have stayed for a predetermined time when the pressing signal is not detected, a step of determining that the coordinates are not detected thereafter, and an image assigned to the operation means An operation control method for an image display device using a coordinate input / detection device, comprising the step of executing an operation function of the display device.

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