JP2013130402A - Erroneous detection prevention method of proximity sensor, erroneous detection prevention device, erroneous detection prevention program and terminal with erroneous detection prevention device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent erroneous detection as a proximate state even in the case where a determination threshold value of a proximity sensor is not appropriate because of various reasons.SOLUTION: An erroneous detection prevention device is provided for preventing erroneous detection of proximity/non-proximity of a proximity detection device which determines whether or not an object is proximate to a proximity sensor by comparing a value of a signal outputted by the proximity sensor with a threshold value. The erroneous detection prevention device acquires, as a reference value, a value of a signal which is outputted from the proximity sensor when it can be determined that the object and the proximity sensor are not proximate. In the case where the threshold value takes such a value that it is determined that the object and the proximity sensor are proximate when the reference value is compared with the threshold value, as a new threshold value, a value is set which is determined based on a value of a signal which is outputted from the proximity sensor when it can be determined that the object and the proximity sensor are proximate.

Description

  The present invention relates to a proximity sensor false detection prevention method, a false detection prevention device, a false detection prevention program, and a terminal including a false detection prevention device when it is determined whether or not an object is in proximity to the proximity sensor.

  In recent years, there has been a widespread configuration in which a proximity sensor is mounted on an apparatus and the operation state of the apparatus is switched when the proximity of an object can be detected based on a measurement value obtained by the proximity sensor.

  For example, a high-performance mobile phone called a smartphone is equipped with a proximity sensor, and when proximity is detected, the screen is turned off to save power, and the touch panel operation acceptance is disabled to prevent erroneous operation of the terminal. It has become common.

  An example of such a technique using a proximity sensor is described in Patent Document 1 and Patent Document 2.

  Patent Document 1 describes a technique in which a human sensor is mounted on a mobile phone device, and power saving control is performed on a display unit and an operation unit when it is determined that a human body is approaching.

  Patent Document 2 describes a mobile phone that turns off the touch panel when it detects that a human body or the like is approaching.

JP 2010-050943 A JP 2011-061316 A

  As described above, a technique using the measurement value of the proximity sensor is generally used.

  However, in such a technique, it is conceivable that the determination threshold value of the proximity sensor adjusted by the manufacturing process becomes invalid due to various reasons, and erroneous detection is caused. For example, it is considered that erroneous detection may be caused due to dirt on the lens of the proximity sensor, changes in characteristics caused by covering the lens portion of the proximity sensor with a protective sheet such as a liquid crystal, and wrinkles during a user's call. It is done. More specifically, when dirt is attached to the lens, there is a problem that the operation of the terminal is hindered because it is erroneously detected as a close-up state even if the face is not close.

  Therefore, the present invention prevents a proximity sensor from erroneously detecting a proximity state as a proximity state even if the determination threshold value of the proximity sensor becomes invalid for various reasons. It is an object of the present invention to provide a terminal including a false detection prevention method, a false detection prevention device, a false detection prevention program, and a false detection prevention device.

  According to the first aspect of the present invention, proximity / non-proximity by a proximity detection device that determines whether an object is close to the proximity sensor by comparing a value of a signal output from the proximity sensor with a threshold value. A false detection preventing device for preventing erroneous detection of the object, and means for acquiring, as a reference value, a value of a signal output from the proximity sensor when it can be determined that the object and the proximity sensor are not in proximity. When the threshold value is such that the object and the proximity sensor are determined to be close when the reference value is compared with the threshold value, the object and the proximity sensor And a means for setting, as a new threshold value, a value determined based on the value of the signal output from the proximity sensor when it can be determined that they are close to each other. .

According to a second aspect of the present invention, there is provided a terminal including a device and a false detection prevention device,
The false detection prevention device is a false detection prevention device provided according to the first aspect of the present invention, and the operation state of the device is switched according to proximity / non-proximity detection by the false detection prevention device. A feature terminal is provided.

  According to the third aspect of the present invention, proximity / non-proximity by a proximity detection device that determines whether an object is in proximity to the proximity sensor by comparing the value of a signal output from the proximity sensor with a threshold value. A false detection prevention method for preventing false detection of the object, wherein the value of the signal output from the proximity sensor when it can be determined that the object and the proximity sensor are not in proximity is obtained as a reference value; When the threshold value is such that the object and the proximity sensor are determined to be close when the reference value is compared with the threshold value, the object and the proximity sensor And a step of setting, as a new threshold, a value determined based on the value of the signal output from the proximity sensor when it can be determined that they are close to each other. .

  According to the fourth aspect of the present invention, proximity / non-proximity by a proximity detection device that determines whether an object is close to the proximity sensor by comparing the value of a signal output from the proximity sensor with a threshold value. A false detection prevention program for causing a computer to function as a false detection prevention device for preventing false detection of an object, wherein the computer outputs from the proximity sensor when it can be determined that the object and the proximity sensor are not in proximity The threshold value is a value that determines that the object and the proximity sensor are close when the reference value is compared with the threshold value. If it is determined that the object and the proximity sensor are close to each other, the value determined based on the value of the signal output from the proximity sensor is used as a new threshold value. It means for constant, erroneous detection prevention program, characterized in that function as detection error protecting apparatus provided with is provided.

  According to the present invention, even if the determination threshold value of the proximity sensor becomes invalid for various reasons, it is possible to prevent erroneous detection of a state that is not in the proximity state as the proximity state.

It is a block diagram showing the fundamental structure of the mobile telephone by embodiment of this invention. It is a perspective view showing an example of appearance of a cellular phone according to an embodiment of the present invention. It is a perspective view showing the other external appearance example of the mobile telephone by embodiment of this invention. It is a flowchart showing the basic operation | movement of the false detection prevention method by embodiment of this invention.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of a mobile phone 100 according to an embodiment of the present invention. In the present embodiment, it is assumed what state the distance between the user and the mobile phone 100 is based on the state of the mobile phone 100 (dial, call state, etc.). Then, when the result of determination using the threshold value for determining whether or not it is in the proximity state is inconsistent with the assumed result, the threshold value is corrected.

  In this explanation, it is assumed that the present embodiment is realized by the mobile phone 100, but the present embodiment can be realized by other devices. For example, this embodiment may be realized by a terminal compliant with PHS (Personal Handy-phone System). Moreover, although this embodiment assumes that it implement | achieves with the portable mobile terminal, it is an apparatus which approaches a sensor at the time of a voice call other than that, and has a use which determines whether it is adjoining If so, it can be realized by an arbitrary device.

  Here, referring to FIG. 1, the mobile phone 100 includes a storage unit 101, a touch panel 102, a proximity sensor 103, a voice input / output unit 104, and a control unit 105. Each of these devices is composed of a number of members, and there are some complicated parts such as when they are mounted separately for each member. Here, for simplicity, each device is illustrated as one device.

  The mobile phone 100 is a portable phone that performs voice communication and mail transmission / reception with other mobile phones via a mobile phone network. Note that the communication method with which the mobile phone 100 conforms is not particularly limited, and may conform to an arbitrary communication method.

  The storage unit 101 is a nonvolatile memory, and stores various threshold values described later, values acquired by the proximity sensor 103, and the like. In addition, the storage unit 101 and / or other storage unit (not shown) store software for realizing the present embodiment in cooperation with the hardware of the mobile phone 100.

  The touch panel 102 is realized by integrating a display unit for presenting information to a user and an operation unit for receiving a user operation. The touch panel 102 can be realized by any method, for example, by a capacitance method.

  In addition, the state of the touch panel 102 is switched by control from the control unit 105. Specifically, when the control unit 105 determines that the user is in the proximity state, the LCD (Liquid Crystal Display) and the organic electroluminescence (organic EL: Organic Electro-Luminescence) included in the touch panel 102 are turned off to save. Set to power state. In addition, the luminance may be lowered instead of turning off completely, and a part of the luminance may be displayed. Furthermore, the operation acceptance from the user may be stopped in order to prevent an erroneous operation.

  In recent years, a multifunctional mobile phone equipped with a touch panel called a smartphone is widely used, and therefore, in the present embodiment, it is assumed that the touch panel 102 is included. However, in the present embodiment, it is not essential that the mobile phone includes a touch panel, and a configuration in which a display unit and an operation unit are separately provided on the mobile phone may be employed. In addition to the touch panel 102, an operation unit may be additionally provided. In this case, the display unit is a control target such as turning off. Further, the operation unit is a control target for canceling the operation reception from the user. In addition, the backlight of the operation unit may be turned off when the display unit is turned off.

  The proximity sensor 103 is a sensor that measures the distance to an object located in the vicinity of the mobile phone 100 using infrared rays or the like. In the present embodiment, the proximity sensor 103 is mounted on the same surface as the touch panel 102 and the voice input / output unit 104. Accordingly, the distance between the mobile phone 100 and the human body of the user who makes a voice call or the user who is going to make a voice call is measured.

  The voice input / output unit 104 is realized by a sound collection device such as a microphone and a voice output device such as a speaker. A voice uttered by a user who uses the mobile phone 100 is collected by the voice input / output unit 104. Further, the voice of the other party of the call transmitted from the mobile phone of the call destination is output by the voice input / output unit 104.

  The control unit 105 has a function for controlling the overall operation of the mobile phone 100. The control unit 105 includes a series of devices. Specifically, the control unit 105 reads a control program (software) stored in the storage unit 101 or the like, and processes a memory or a CPU (Central Processing) for processing according to the control program. Unit) hardware. These programs, CPU and memory are not shown.

  In addition, it is assumed that the control unit 105 includes a drive circuit and a control unit for driving and controlling each unit such as the storage unit 101, the touch panel 102, the proximity sensor 103, and the voice input / output unit 104. For convenience, the drive circuit and the control means are included in the control unit 105, but a part or all of them may be realized by an independent device or IC other than the control unit 105.

  Further, in FIG. 1, only the portion particularly related to the operation of the present embodiment is illustrated, but the mobile phone 100 includes an antenna, a battery, and the like that are not illustrated.

  Next, a specific example of the appearance of this embodiment will be described with reference to FIG.

  Referring to FIG. 2, the touch panel 102, the proximity sensor 103, and the voice input / output unit 104 are mounted on the same surface of the mobile phone 100. In this specific example, the proximity sensor 103 is expressed as a single device for convenience of explanation, but the proximity sensor 103 may be configured by a plurality of devices. Further, the shape, size and installation position are not particularly limited.

  Here, the voice input / output unit 104 is mounted as a speaker on the top of the mobile phone 100 and further mounted as a microphone on the bottom of the mobile phone 100.

  When the user makes a voice call using the mobile phone 100, the user brings his / her ear and mouth close to the voice input / output unit 104. Therefore, the user cannot visually recognize and operate the touch panel 102 during a voice call. Therefore, power saving is achieved by turning off the touch panel 102 during a voice call. In addition, erroneous operation is prevented by canceling operation acceptance by the touch panel 102.

  Further, when the mobile phone 100 is mounted, not only the shape shown in FIG. 2 but also a so-called folding shape as shown in FIG. 3 may be used. In the example illustrated in FIG. 3, a display unit 106 and an operation unit 107 are provided instead of the touch panel 102. Even in such a configuration, it is preferable to turn off the display unit 106 because the display unit 106 cannot be visually recognized during a voice call. Further, the operation acceptance by the operation unit 107 may be stopped.

  In addition to the shapes shown in FIGS. 2 and 3, any shape may be used as long as it is preferable to turn off the touch panel 102 and the display unit 106 during a voice call and stop the operation acceptance of the touch panel 102 and the operation unit 107. The mobile phone 100 may be realized depending on the shape.

  Next, a false detection prevention process of the proximity sensor performed by the mobile phone 100 will be described in detail with reference to the flowchart of FIG.

  As a premise of this description, it is assumed that the “proximity threshold” of the proximity sensor 103 is set in advance in the storage unit 101 at the time of the production process of the mobile phone 100, software upgrade, or the like. Here, the proximity threshold refers to a boundary value at which the control unit 105 determines that the user is in proximity. The proximity sensor 103 increases or decreases the sensor reading according to the distance to the user. Here, two settings are conceivable: a setting in which the sensor reading value increases as the distance to the user is closer, and a setting in which the sensor reading value decreases as the distance to the user is closer. In this regard, in this explanation, it is assumed that the sensor reading value increases as the distance from the user is shorter. In this case, the control unit 105 determines that the user's human body is close when the sensor reading value exceeds the proximity threshold. Then, when the control unit 105 determines that the user's human body is close, the control unit 105 switches the operation state of the mobile phone 100 by turning off the touch panel 102 or the like. In the present embodiment, the preset proximity threshold value is referred to as “first NEAR”.

  First, it is confirmed whether or not any dial operation such as an operation of inputting a destination telephone number by the user or a selection operation from the telephone directory is in progress (step S1). Here, if the user is dialing (Yes in step S1), it can be determined that “the user is operating and his / her face is not brought close to the mobile phone 100”, and therefore, it is assumed that the user is not in proximity. Then, the sensor reading value at this time is stored in the storage unit 101 as “non-proximity value FAR” (step S2).

  On the other hand, when the user is not dialing (No in step S1), it is confirmed whether or not the mobile phone 100 is receiving a call (step S3).

  If the incoming call is not being received (No in step S3), the operation is terminated. On the other hand, if the incoming call is being received (Yes in step S3), it is not possible to determine whether or not it is in the proximity state. Therefore, the sensor reading value is acquired from the proximity sensor 103 at a predetermined interval, and the smallest of the acquired samples The sensor reading value is determined as the value in the non-proximity state. The minimum sensor reading value is stored in the storage unit 101 as “non-proximity value FAR” (step S4).

  In step S5 executed after step S2 or S4, the non-proximity value FAR acquired in step S2 or step S4 is compared with the first NEAR.

  As described above, in this setting, it can be determined that the greater the acquired value of the proximity sensor 103, the closer the distance to the user. If the non-proximity value FAR ≦ the first NEAR (No in step S5), the measurement value is set for the measurement value between the non-proximity value FAR and the proximity value first NEAR. Although the human body is far enough to determine that it is non-proximity when compared with the non-proximity value FAR, if the measured value is compared with the proximity value NEAR, it is erroneously determined as close. That is, when the non-proximity value FAR acquired when the human body and the proximity sensor are non-proximity is compared with the proximity NEAR, the proximity NEAR takes a value that erroneously determines that the human body and the proximity sensor are close. Will be.

  Therefore, if the proximity / non-proximity determination is performed using the first NEAR, it is considered that an erroneous determination occurs. Therefore, in this case, an error flag is set. That is, Error = 1 is set, and the error is stored in the storage unit 101 (step S8). In addition, as a cause of such an erroneous determination being performed, for example, the case where the lens of the proximity sensor 103 is dirty or the case where the screen protection sheet is stuck on the lens of the proximity sensor 103 is considered. .

  On the other hand, when the non-proximity value FAR> the first NEAR (Yes in step S5), it is considered that there is no problem because the above erroneous determination does not occur. Therefore, without setting an error flag, Error = 0 is set and the error is stored in the storage unit 101 (step S6).

  Then, using the first NEAR as the proximity threshold value, it is determined whether or not the proximity state is set. Then, an apparatus operation (for example, the touch panel 102 is turned off) according to the determination result is performed (step S7).

  Thereafter, the control unit 105 determines that the call has been started, triggered by detection of input / output of voice by the voice input / output unit 104 or establishment of communication with the call destination (step S9).

  In step S10, it is checked whether Error = 0 with reference to the storage unit 101. If Error = 0 (Yes in step S10), there is no problem with the first NEAR. Therefore, the first NEAR is continuously used as the proximity threshold value to determine whether or not the proximity state is set. Then, an apparatus operation (for example, turning off the touch panel 102) according to the determination result is performed (step S11). And operation | movement is complete | finished with completion | finish of a telephone call.

  On the other hand, when Error = 1 (No in step S10), if the determination is made with the first NEAR as the proximity threshold as it is, an erroneous determination is made, and the process of acquiring the NEAR value again is entered.

  In this case, it is not possible to determine whether the phone is in a call state or in the proximity state, but a state in which the user is approaching the mobile phone 100 if a certain level of sound is input from the microphone that is the voice input / output unit 104 Therefore, a value determined by a predetermined method based on the acquired value of the proximity sensor 103 at this time is stored in the storage unit 101 as the second NEAR (step S12). The predetermined method is, for example, a method in which a value obtained by subtracting a predetermined value from the acquired value is used as the second NEAR value, and a value obtained by multiplying the acquired value by a predetermined value less than 1 is set as the second NEAR value. For example, a predetermined margin is provided between the acquired value and the second NEAR value.

  Thereafter, the second NEAR is used as the proximity threshold value to determine whether or not the proximity state is set. Then, an apparatus operation (for example, turning off the touch panel 102) according to the determination result is performed (step S13). In addition, after the current call ends, the second NEAR measured this time may be deleted, but the second NEAR may be used next time. That is, the second NEAR measured this time may be handled as a new first NEAR. That is, when the operation from step S1 is performed again next time, the operation may be performed using the second NEAR value measured this time as the first NEAR value.

  According to the present embodiment described above, it is possible to prevent erroneous detection from correcting the proximity threshold when the proximity sensor is erroneously detected as being in the proximity state due to contamination of the proximity sensor, etc. There is an effect.

  Moreover, although the above-described embodiment is a preferred embodiment of the present invention, the scope of the present invention is not limited only to the above-described embodiment, and various modifications are made without departing from the gist of the present invention. Implementation in the form is possible.

  For example, the above-described embodiment can be modified as follows.

  In the above description, when it is determined that there is a false detection (No in Step S5, No in Step S10), the proximity threshold is automatically acquired again by performing the operations of Step S12 and Step S13. Then, the determination process is continued by correcting the proximity threshold using the acquired value.

  However, the user may be notified that there is a problem in some way without performing such automatic correction. This can prompt the user to check whether the proximity sensor 103 is dirty. As a notification method, a warning sound can be output from an external speaker, a warning display can be generated by lighting an LED (Light Emitting Diode), and the like.

  Furthermore, in the above description, it is assumed that the touch panel 102 is turned off and the operation reception is stopped when the control unit 105 determines that it is in the proximity state. However, the operation at the time of determining the proximity state and the operation of the control unit 105 at the time of determining the non-proximity state are not limited to this. For example, when it can be determined that the proximity state is switched to the non-proximity state, the sound output may be increased or the sensitivity of the microphone may be increased.

  Further, if the non-proximity state continues for a predetermined time or more during a voice call, the voice call may be terminated. That is, an operation state of an arbitrary device may be switched by an arbitrary method in accordance with the proximity state and the non-proximity state.

  According to the present embodiment, for example, even when the lens of the proximity sensor 103 is dirty, or when the screen protection sheet has been pasted on the lens of the proximity sensor 103, the appropriate proximity corresponding to the lens. A threshold can be set.

  Note that the false detection prevention device in the mobile phone described above can be realized by hardware, software, or a combination thereof. Further, the false detection prevention method performed by the above mobile phone can also be realized by hardware, software, or a combination thereof. Here, “realized by software” means realized by a computer reading and executing a program.

  The program may be stored using various types of non-transitory computer readable media and supplied to the computer. Non-transitory computer readable media include various types of tangible storage media. Examples of non-transitory computer readable media include magnetic recording media (for example, flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (for example, magneto-optical disks), CD-ROMs (Read Only Memory), CD- R, CD-R / W, semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (random access memory)). The program may also be supplied to the computer by various types of transitory computer readable media. Examples of transitory computer readable media include electrical signals, optical signals, and electromagnetic waves. The temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.

  A part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.

(Supplementary note 1) To prevent false detection of proximity / non-proximity by a proximity detection device that determines whether or not an object is close to the proximity sensor by comparing the value of a signal output from the proximity sensor with a threshold value The false detection prevention device of
Means for acquiring, as a reference value, a value of a signal output from the proximity sensor when it can be determined that the object and the proximity sensor are not in proximity;
When the threshold value is such that the object and the proximity sensor are determined to be close when the reference value is compared with the threshold value, the object and the proximity sensor are Means for setting as a new threshold a value determined based on the value of the signal output from the proximity sensor when it can be determined that they are close to each other;
A false detection prevention device comprising:

(Supplementary Note 2) To prevent false detection of proximity / non-proximity by a proximity detection device that determines whether or not an object is close to the proximity sensor by comparing the value of a signal output from the proximity sensor with a threshold value The false detection prevention device of
Means for acquiring, as a reference value, a value of a signal output from the proximity sensor when it can be determined that the object and the proximity sensor are not in proximity;
When the threshold value is such that the object and the proximity sensor are determined to be close when the reference value is compared with the threshold value, the object and the proximity sensor are Means for notifying the outside that the threshold value has taken a value that would cause a case where it is determined that it is close even if it is not close;
A false detection prevention device comprising:

(Appendix 3) The false detection prevention device according to appendix 1 or 2,
An apparatus for preventing false detection, characterized in that when it can be determined that the object and the proximity sensor are not close to each other, a terminal equipped with the proximity sensor receives an operation by a user.

(Supplementary note 4) The false detection prevention device according to any one of supplementary notes 1 to 3,
When it can be determined that the object and the proximity sensor are not in proximity, this includes a period from when a call is received at a terminal equipped with the proximity sensor to when a user corresponding to the call starts a call. The signal value output from the proximity sensor is acquired at a predetermined interval between the time when the terminal receives an incoming call and the time when the user corresponding to the incoming call starts a call. A false detection prevention apparatus characterized in that a value that reduces the case where the value is determined to be closest is used as the reference value.

(Additional remark 5) It is a false detection prevention apparatus of Additional remark 1, Comprising:
When it can be determined that the object and the proximity sensor are close to each other, it includes a time when a sound collecting device provided in the same terminal as the proximity sensor is receiving a sound with a certain volume or more. A false detection prevention device.

(Appendix 6) A terminal including a device and a false detection prevention device,
The false detection prevention device is the false detection prevention device according to any one of appendices 1 to 5, wherein the operation state of the device is switched according to proximity / non-proximity detection by the false detection prevention device. Characteristic terminal.

(Supplementary Note 7) To prevent false detection of proximity / non-proximity by a proximity detection device that determines whether an object is close to the proximity sensor by comparing the value of a signal output from the proximity sensor with a threshold value Is a false detection prevention method,
Obtaining a value of a signal output from the proximity sensor as a reference value when it can be determined that the object and the proximity sensor are not in proximity;
When the threshold value is such that the object and the proximity sensor are determined to be close when the reference value is compared with the threshold value, the object and the proximity sensor are Setting a value determined based on the value of the signal output from the proximity sensor when it can be determined that they are close as a new threshold;
A false detection prevention method comprising:

(Supplementary Note 8) To prevent false detection of proximity / non-proximity by a proximity detection device that determines whether an object is close to the proximity sensor by comparing the value of a signal output from the proximity sensor with a threshold value A false detection prevention program for causing a computer to function as a false detection prevention device,
The computer,
Means for acquiring, as a reference value, a value of a signal output from the proximity sensor when it can be determined that the object and the proximity sensor are not in proximity;
When the threshold value is such that the object and the proximity sensor are determined to be close when the reference value is compared with the threshold value, the object and the proximity sensor are Means for setting as a new threshold a value determined based on the value of the signal output from the proximity sensor when it can be determined that they are close to each other;
An erroneous detection prevention program that functions as an erroneous detection prevention apparatus comprising:

  INDUSTRIAL APPLICABILITY The present invention can be used for controlling turning off of a display device according to the proximity of a human body to the terminal in a terminal such as a mobile phone provided with a proximity sensor and a display device.

  In addition, the present invention can be used in a terminal such as a mobile phone provided with a proximity sensor and an operation unit for controlling the invalidation of the operation unit according to the proximity of the human body to the terminal.

  INDUSTRIAL APPLICABILITY The present invention can be used for controlling turning off of a display device according to an object such as a cover covering a terminal in a terminal such as a mobile phone including a proximity sensor and a display device.

  Further, the present invention can be used for controlling invalidation of an operation unit according to the fact that an object such as a cover covers the terminal in a terminal such as a mobile phone including a proximity sensor and an operation unit.

DESCRIPTION OF SYMBOLS 100 Mobile telephone 101 Memory | storage part 102 Touch panel 103 Proximity sensor 104 Voice input / output part 105 Control part 106 Display part 107 Operation part

Claims (8)

Preventing false detection to prevent false detection of proximity / non-proximity by a proximity detector that determines whether an object is close to the proximity sensor by comparing the value of a signal output from the proximity sensor with a threshold value A device,
Means for acquiring, as a reference value, a value of a signal output from the proximity sensor when it can be determined that the object and the proximity sensor are not in proximity;
When the threshold value is such that the object and the proximity sensor are determined to be close when the reference value is compared with the threshold value, the object and the proximity sensor are Means for setting as a new threshold a value determined based on the value of the signal output from the proximity sensor when it can be determined that they are close to each other;
A false detection prevention device comprising: Preventing false detection to prevent false detection of proximity / non-proximity by a proximity detector that determines whether an object is close to the proximity sensor by comparing the value of a signal output from the proximity sensor with a threshold value A device,
Means for acquiring, as a reference value, a value of a signal output from the proximity sensor when it can be determined that the object and the proximity sensor are not in proximity;
When the threshold value is such that the object and the proximity sensor are determined to be close when the reference value is compared with the threshold value, the object and the proximity sensor are Means for notifying the outside that the threshold value has taken a value that would cause a case where it is determined that it is close even if it is not close;
A false detection prevention device comprising: The false detection prevention device according to claim 1 or 2,
An apparatus for preventing false detection, characterized in that when it can be determined that the object and the proximity sensor are not close to each other, a terminal equipped with the proximity sensor receives an operation by a user. The false detection prevention device according to any one of claims 1 to 3,
When it can be determined that the object and the proximity sensor are not in proximity, this includes a period from when a call is received at a terminal equipped with the proximity sensor to when a user corresponding to the call starts a call. The signal value output from the proximity sensor is acquired at a predetermined interval between the time when the terminal receives an incoming call and the time when the user corresponding to the incoming call starts a call. A false detection prevention apparatus characterized in that a value that reduces the case where the value is determined to be closest is used as the reference value. The false detection prevention device according to claim 1,
When it can be determined that the object and the proximity sensor are close to each other, it includes a time when a sound collecting device provided in the same terminal as the proximity sensor is receiving a sound with a certain volume or more. A false detection prevention device. A terminal including a device and a false detection prevention device,
The false detection prevention device is the false detection prevention device according to any one of claims 1 to 5, wherein the operation state of the device is switched according to proximity / non-proximity detection by the false detection prevention device. A terminal characterized by. Preventing false detection to prevent false detection of proximity / non-proximity by a proximity detector that determines whether an object is close to the proximity sensor by comparing the value of a signal output from the proximity sensor with a threshold value A method,
Obtaining a value of a signal output from the proximity sensor as a reference value when it can be determined that the object and the proximity sensor are not in proximity;
When the threshold value is such that the object and the proximity sensor are determined to be close when the reference value is compared with the threshold value, the object and the proximity sensor are Setting a value determined based on the value of the signal output from the proximity sensor when it can be determined that they are close as a new threshold;
A false detection prevention method comprising: Preventing false detection to prevent false detection of proximity / non-proximity by a proximity detector that determines whether an object is close to the proximity sensor by comparing the value of a signal output from the proximity sensor with a threshold value A false detection prevention program for causing a computer to function as a device,
The computer,
Means for acquiring, as a reference value, a value of a signal output from the proximity sensor when it can be determined that the object and the proximity sensor are not in proximity;
When the threshold value is such that the object and the proximity sensor are determined to be close when the reference value is compared with the threshold value, the object and the proximity sensor are Means for setting as a new threshold a value determined based on the value of the signal output from the proximity sensor when it can be determined that they are close to each other;
An erroneous detection prevention program that functions as an erroneous detection prevention apparatus comprising:

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