JP2015014932A - Touch panel input device, touch operation detection control method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce possibility of erroneous detection of a touch operation when an object approaches a touch panel at a relatively slow speed.SOLUTION: A touch panel input device includes: a touch panel; a proximity sensor that detects an approximation of an object to a touch panel; a touch operation detection section that detects a touch operation made on a touch panel; a touch sensitivity setting section that sets the detection sensitivity of the touch operation detection section; a proximity detection section that detects a state that an object other than an object used for touch operation approaches to the touch panel, on the basis of a detection result of the detection result; a detection prevention section that, when the proximity detection section detects a state that the object other than the object used for touch operation approaches to the touch panel, prevents detection of the touch operation made by the touch operation detection section; a proximity sensitivity setting section that, when the touch sensitivity setting section sets detection sensitivity of the touch operation detection section to be relatively high, sets the detection sensitivity of the proximity detection section to be higher than when the detection sensitivity of the touch operation detection section sets to be relatively low.

Description

  The present invention relates to a touch panel input device, a touch operation detection control method, and a program.

In an apparatus including a touch panel, when an object approaches the touch panel in a situation where the user does not intend to perform a touch operation, there is a risk of erroneous detection that detects the approach of the object as a touch operation. For example, in a mobile terminal device having a touch panel, there is a possibility that an object such as a face approaches the touch panel as a touch operation in a situation where the user does not intend the touch operation, such as during a call.
As a method for preventing such erroneous detection, there is a method for suppressing detection of a touch operation when proximity of an object is detected using a proximity sensor.

For example, a mobile phone described in Patent Document 1 includes a touch panel that can input information by contact, a proximity sensor that detects an approach of the touch panel to a human body during a call, an acceleration sensor that detects acceleration, and the proximity sensor A control unit that controls the sensitivity of the proximity sensor in accordance with the magnitude of detected acceleration output from the acceleration sensor while prohibiting the information input from the touch panel when detecting an approach to the human body. Prepare. Then, when the detected acceleration exceeds a predetermined threshold, the control unit sets the sensitivity to a sensitivity higher than a preset normal sensitivity.
According to Patent Document 1, it is possible to prevent erroneous input from the touch panel even when the user brings the touch-panel-equipped mobile phone close to the ear or the like at a faster speed than usual.

JP 2011-61316 A

In the method of suppressing the detection of touch operation when the proximity sensor detects the approach of the object to the device, if the touch panel reacts before the proximity sensor detects the object, the touch operation is erroneously detected. There is a risk that.
Moreover, in the mobile phone described in Patent Document 1, when the object approaches the touch panel with an acceleration equal to or lower than a predetermined threshold, the sensitivity of the proximity sensor cannot be set high. In such a case, in the mobile phone described in Patent Document 1, there is a possibility that the touch operation is erroneously detected.

  An object of the present invention is to provide a touch panel input device, a touch operation detection control method, and a program that can solve the above-described problems.

  The present invention has been made to solve the above-described problems, and a touch panel input device according to an aspect of the present invention includes a touch panel, a proximity sensor that detects the approach of an object to the touch panel, and a touch operation on the touch panel. An object other than an object used for the touch operation approaches the touch panel based on a detection result of the proximity sensor, a touch sensitivity setting unit that sets a detection sensitivity of the touch operation detection unit, and a detection result of the proximity sensor When the proximity detection unit that detects the state that has been detected and the proximity detection unit detect a state in which an object other than the object used for the touch operation has approached the touch panel, the detection of the touch operation performed by the touch operation detection unit is suppressed. When the detection suppression unit and the touch sensitivity setting unit set the detection sensitivity of the touch operation detection unit relatively high, Than setting a relatively low detection sensitivity of the touch operation detection unit, characterized by comprising a proximity sensitivity setting unit setting a high detection sensitivity of the proximity detector.

  A touch operation detection control method according to another aspect of the present invention is a touch operation detection control method for an apparatus including a touch panel and a proximity sensor that detects an approach of an object to the touch panel. A touch operation detecting step for detecting a touch operation to the touch, a touch sensitivity setting step for setting a detection sensitivity in the touch operation detecting step, and an object other than the object used for the touch operation based on a detection result of the proximity sensor When an object other than an object used for touch operation is detected in the approach detection step for detecting a state in which the touch panel is approached to the touch panel, and in the approach detection step, A detection suppression step for suppressing detection of a touch operation to be performed, and the touch sensitivity setting step. When the detection sensitivity at the touch operation detection step is set relatively high, the approach that sets the detection sensitivity at the approach detection step higher than when the detection sensitivity at the touch operation detection step is set relatively low. And a sensitivity setting step.

  According to another aspect of the present invention, there is provided a program for touch operation on a touch panel in a computer that controls touch operation detection of a device including a touch panel and a proximity sensor that detects an approach of an object to the touch panel. A touch operation detecting step of detecting touch, a touch sensitivity setting step of setting detection sensitivity in the touch operation detecting step, and an object other than the object used for the touch operation on the touch panel based on a detection result of the proximity sensor. When an approach detection step for detecting an approaching state and an approach detection step for detecting an approaching state of an object other than an object used for a touch operation to the touch panel, the touch operation detection step is performed. In the detection suppression step for suppressing detection and the touch sensitivity setting step, When the detection sensitivity at the touch operation detection step is set to be relatively high, the approach sensitivity at which the detection sensitivity at the approach detection step is set to be higher than when the detection sensitivity at the touch operation detection step is set to be relatively low And a setting step.

  ADVANTAGE OF THE INVENTION According to this invention, even when an object approaches a touch panel with comparatively small acceleration, a possibility that touch operation may be misdetected can be reduced.

It is a schematic block diagram which shows the function structure of the touchscreen input device in one Embodiment of this invention. It is a schematic block diagram which shows the hardware constitutions of the smart phone in the embodiment. It is a schematic external view which shows the external appearance which looked at the smart phone in the same embodiment from the front side. It is a schematic block diagram which shows the function structure of the smart phone in the embodiment. In the embodiment, it is explanatory drawing which shows the example of the state which the user's finger | toe approached the touch panel. It is explanatory drawing which shows the example of reflection of the infrared light by the object in the same embodiment. It is a graph which shows the example of the relationship between the distance of a touch panel and an object, and the light reception amount of a light receiving element in the same embodiment. In the same embodiment, it is a flowchart which shows the example of the process sequence which an approach sensitivity setting part sets the threshold value of an approach detection part.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a schematic block diagram showing a functional configuration of a touch panel input device according to an embodiment of the present invention. In the figure, a touch panel input device 10 includes a touch panel 11, a proximity sensor 12, a touch sensitivity setting unit 13, a touch operation detection unit 14, a detection suppression unit 15, an approach detection unit 16, and an approach sensitivity setting unit 17. It comprises.
Here, the touch panel input device is a device having a touch panel.

The touch panel 11 is a non-contact type touch panel and accepts a touch operation as a user input operation. Hereinafter, a case where the touch panel 11 is a projected capacitive touch panel will be described as an example.
The proximity sensor 12 detects the approach (for example, the degree of approach) of an object to the touch panel 11. For example, the proximity sensor 12 emits (outputs) infrared light (infrared light), receives infrared light reflected by the object, and outputs a signal indicating the intensity of the received infrared light to the touch panel 11. It outputs to the approach detection part 16 as a signal which shows an approach degree. Or you may make it the proximity sensor 12 detect the approach degree of the object to the touch panel 11 using means other than infrared light, such as an ultrasonic wave or a laser.

  The touch operation detection unit 14 detects a touch operation on the touch panel 11. Specifically, the touch operation detection unit 14 determines the presence / absence of a touch operation on the touch panel 11 and the touch position based on a change in capacitance on the touch panel 11. The touch position here is a position where a touch operation is performed on the touch panel.

  The touch sensitivity setting unit 13 sets the detection sensitivity of the touch operation detection unit 14. Specifically, the touch sensitivity setting unit 13 sets the detection sensitivity of the touch operation detection unit 14 by adjusting a threshold used by the touch operation detection unit 14 to determine whether or not a touch operation has been performed. As the detection sensitivity is set higher, the touch operation detection unit 14 determines (detects) that there is a touch operation even if the change in capacitance on the touch panel 11 is small.

For example, the touch sensitivity setting unit 13 sets the detection sensitivity of the touch operation detection unit 14 in accordance with a user setting operation.
Alternatively, the touch sensitivity setting unit 13 may automatically set the detection sensitivity of the touch operation detection unit 14. For example, when the touch sensitivity setting unit 13 determines whether the user's finger is in a bare hand state or a gloved state and determines that the user's finger is in a gloved state, the detection sensitivity of the touch operation detection unit 14 is set high. You may make it do. The determination as to whether the user's finger is in a bare hand state or a gloved state is made based on, for example, the magnitude of the change in capacitance on the touch panel 11.

The approach detection unit 16 detects a state in which an object other than the object used for the touch operation has approached the touch panel 11 based on the detection result of the proximity sensor 12. Here, examples of the object used for the touch operation include a user's finger and a touch pen (stylus pen). Hereinafter, a state in which an object approaches the touch panel is referred to as an “approach state” of the object to the touch panel.
Various methods can be used as the method by which the approach detection unit 16 detects the approaching state of the object other than the object used for the touch operation to the touch panel 11.

  For example, when the touch panel input device 10 is a smartphone or a mobile phone, the approach detection unit 16 detects an approach state of an object near the speaker as an approach state of the object other than the object used for the touch operation to the touch panel 11. It may be. In this case, the proximity sensor 12 is disposed near the speaker. By performing the detection by the approach detection unit 16, it is possible to prevent erroneous detection in which the touch operation detection unit 14 detects the approach of the user's head to the touch panel 11 during a call or the like as a touch operation.

  Alternatively, the approach detection unit 16 determines the size of an object that has approached the touch panel 11, and the approach state of the object having a predetermined size or more to the touch panel 11 is transferred to the touch panel 11 of an object other than the object used for the touch operation. You may make it detect as an approach state. For example, when a plurality of proximity sensors 12 are provided around the touch panel 11 and the proximity detection unit 16 determines that the objects have approached a predetermined threshold or more in the plurality of proximity sensors 12, an object having a predetermined size or more is obtained. The approaching state to the touch panel 11 is detected.

  The detection suppression unit 15 suppresses the detection of the touch operation performed by the touch operation detection unit 14 when the proximity detection unit 16 detects the approach state of the object other than the object used for the touch operation to the touch panel 11. When the detection suppression unit 15 performs the suppression, the possibility that the touch operation detection unit 14 erroneously detects the touch operation can be reduced. Here, the erroneous detection of the touch operation means that an approach of the object to the touch panel in a situation where the user does not intend the touch operation is detected as the touch operation.

  The approach sensitivity setting unit 17 sets the detection sensitivity of the approach detection unit 16. Specifically, the proximity sensitivity setting unit 17 sets the detection sensitivity of the proximity detection unit 16 by adjusting the threshold value of the determination performed by the proximity detection unit 16 using the detection result of the proximity sensor 12. Alternatively, the proximity sensitivity setting unit 17 may adjust the proximity sensor 12 such as adjusting the infrared light output intensity of the proximity sensor 12 to set the detection sensitivity of the proximity detection unit 16.

  The approach sensitivity setting unit 17 detects the approach when the touch sensitivity setting unit 13 sets the detection sensitivity of the touch operation detection unit 14 to be relatively high compared to when the detection sensitivity of the touch operation detection unit 14 is set to be relatively low. The detection sensitivity of the unit 16 is set high. As the detection sensitivity is set higher, the approach detection unit 16 moves to the touch panel 11 of an object other than the object used for the touch operation even if the degree of the approach of the object to the touch panel 11 indicated by the signal from the proximity sensor 12 is small. Detect the approaching state.

  Here, in a state where the detection sensitivity is relatively high, the touch operation detection unit 14 detects a relatively small change in capacitance on the touch panel 11 as a touch operation. Therefore, the touch operation detection unit 14 determines that there is a touch operation in a state where the distance between the touch panel 11 and the object is relatively long. In this respect, there is a high possibility that the touch operation detection unit 14 erroneously detects the touch operation.

Therefore, the proximity sensitivity setting unit 17 sets the detection sensitivity of the proximity detection unit 16 higher when the detection sensitivity of the touch operation detection unit 14 is relatively high than when the detection sensitivity of the touch operation detection unit 14 is relatively low. . The approach sensitivity setting unit 17 sets the detection sensitivity of the approach detection unit 16 to be relatively high, so that the approach detection unit 16 can use a device other than the object used for the touch operation even when the object is relatively away from the touch panel 11. An approaching state of the object to the touch panel 11 is detected.
Based on the detection result of the approach detection unit 16, the detection suppression unit 15 may suppress the detection of the touch operation performed by the touch operation detection unit 14, so that the touch operation detection unit 14 may erroneously detect the touch operation. Can be reduced.

As described above, when the approach detection unit 16 detects the approaching state of the object other than the object used for the touch operation to the touch panel 11, the detection suppression unit 15 detects the touch operation performed by the touch operation detection unit 14. Suppress. Further, the proximity sensitivity setting unit 17 is closer to the touch sensitivity setting unit 13 when the detection sensitivity of the touch operation detection unit 14 is set relatively high than when the detection sensitivity of the touch operation detection unit 14 is set relatively low. The detection sensitivity of the detection unit 16 is set high.
Thereby, as described above, the possibility that the touch operation detection unit 14 erroneously detects the touch operation can be reduced.

  In particular, the approach detection unit 16 detects the approaching state of the object other than the object used for the touch operation to the touch panel 11 based on the detection result of the approach of the object to the touch panel 11 by the proximity sensor 12. The detection can be performed without depending on the above. Therefore, the touch panel input device 10 can reduce the possibility that the touch operation detection unit 14 erroneously detects the touch operation even when the object approaches the touch panel with relatively small acceleration.

Next, with reference to FIGS. 2 to 8, an embodiment of the present invention will be described in more detail by taking as an example the case where the present invention is applied to a smartphone.
FIG. 2 is a schematic configuration diagram illustrating a hardware configuration of the smartphone according to the present embodiment. In the figure, a smartphone 100 includes a touch panel 110, a proximity sensor 120, a communication circuit 131, an antenna 132, an audio input circuit 141, an audio output circuit 142, a storage device 180, a CPU (Central Processing Unit). Processing device). The touch panel 110 includes a display device 111 and a touch sensor 112. The proximity sensor 120 includes a light emitting element 121 and a light receiving element 122.

The smartphone 100 provides various functions such as a voice call function, an e-mail function, and a web browsing function based on a user operation by a touch operation on the touch panel 110. The smartphone 100 corresponds to an example of the touch panel input device 10 (FIG. 1).
However, the present invention is not limited to smartphones and can be applied to various touch panel input devices. For example, the present invention can be applied to a mobile phone, a tablet terminal device, a personal computer (PC), a game machine, or the like that includes a touch panel.

The touch panel 110 is a non-contact type touch panel and accepts a touch operation as a user input operation. The touch panel 110 corresponds to an example of the touch panel 11 (FIG. 1).
The display device 111 includes a display screen such as a liquid crystal display (LCD) or an organic electroluminescence display (OELD), and displays various images such as moving images, still images, and text (characters). .
The touch sensor 112 is provided on the display screen of the display device 111, and detects an approach of an object to the display screen such as a touch operation by a change in capacitance. The touch sensor 112 outputs a signal indicating the capacitance to the CPU 190.

The proximity sensor 120 is provided in the vicinity of the touch panel 110 and detects the approach (for example, the degree of approach) of an object to the touch panel 110. The proximity sensor 120 corresponds to an example of the proximity sensor 12 (FIG. 1).
The light emitting element 121 is a light emitting diode (LED) that emits infrared light.
The light receiving element 122 is a photodiode (PD) that detects infrared light. In particular, the light receiving element 122 detects infrared light that is emitted from the light emitting element 121 and hits an object and is reflected. Thereby, the light receiving element 122 detects the degree of approach of the object to the touch panel 110.
The light receiving element 122 outputs a signal indicating the amount of received infrared light to the CPU 190. The signal output from the light receiving element 122 indicates the degree of proximity of the object to the touch panel 110.

  The communication circuit 131 forms a wireless line with the base station of the mobile phone network via the antenna 132, modulates and demodulates transmission / reception signals, and performs wireless communication with the base station to perform various data. Send and receive. The mobile phone network here is a wireless communication network provided by a communication carrier for mobile phone terminal devices (smartphones and mobile phones).

The voice input circuit 141 includes a microphone, collects ambient sounds, converts them into voice signals, and outputs the obtained voice signals to the CPU 190. For example, the voice input circuit 141 collects a user's uttered voice and outputs a voice signal to the CPU 190 during a voice call.
The audio output circuit 142 includes a speaker, and outputs audio from the CPU 190 based on the audio signal. For example, the voice output circuit 142 acquires a voice signal of a ring tone when a call is received from the CPU 190 and outputs a ring tone. Also, the voice output circuit 142 acquires the voice signal of the voice of the other party during voice call from the CPU 190 and outputs the voice of the other party.

The storage device 180 includes a memory such as a ROM (Read Only Memory) or a RAM (Random Access Memory), and stores various data.
The CPU 190 reads out and executes the program from the storage device 180, thereby controlling each unit of the smartphone 100 and executing various functions. The CPU 190 is connected to the storage device 180 and other parts of the smartphone 100 via a bus line and an input / output interface (I / O Interface).

FIG. 3 is a schematic outline view showing the appearance of the smartphone 100 as viewed from the front side (display screen side). In the figure, the display screen of the touch panel 110, the proximity sensor 120, the microphone of the audio input circuit 141, and the speaker of the audio output circuit 142 are arranged on the same surface of the housing 100a of the smartphone 100.
The housing 100a is a housing that can be operated with one hand and is convenient for carrying.

An antenna 132 is provided in the housing 100a. The antenna 132 may be extendable / contractable from the housing 100a or may be fixed inside the housing 100a.
In FIG. 3, the speaker of the audio output circuit 142 is arranged on the display screen of the touch panel 110, and the microphone of the audio input circuit 141 is arranged below the display screen of the touch panel 110. Further, the proximity sensor 120 is disposed in the vicinity of the speaker of the audio output circuit 142. With this arrangement, it is possible to detect the approach of the user's head or the like to the speaker (approach to the vicinity of the speaker on the display screen) during a call.

FIG. 4 is a schematic block diagram illustrating a functional configuration of the smartphone 100. In the figure, the smartphone 100 includes a touch panel 110, a proximity sensor 120, a communication unit 230, a voice input circuit 141, a voice output circuit 142, a storage unit 280, and a control unit 290. The touch panel 110 includes a display device 111 and a touch sensor 112. The proximity sensor 120 includes a light emitting element 121 and a light receiving element 122. The storage unit 280 includes a threshold storage unit 281. The control unit 290 includes a touch sensitivity setting unit 291, a touch operation detection unit 292, a detection suppression unit 293, and an approach detection unit 294.
4, the same reference numerals (100, 110 to 112, 120 to 122, 141 to 142) are assigned to the same parts as those in FIG.

The communication unit 230 is configured by a combination of the communication circuit 131 (FIG. 2) and the antenna 132. As described for the communication circuit 131 with reference to FIG. 2, the communication unit 230 performs wireless communication with a base station of the mobile phone network to transmit and receive various data.
The storage unit 280 is realized by the storage device 180 (FIG. 2). As described for the storage device 180 with reference to FIG. 2, the storage unit 280 stores various data.

The threshold value storage unit 281 stores the threshold value of the detection sensitivity of the approach detection unit 294 for each detection sensitivity of the touch operation detection unit 292. Using the threshold value stored in the threshold value storage unit 281, the approach sensitivity setting unit 295 sets the detection sensitivity of the approach detection unit 294.
The threshold storage unit 281 is realized by a nonvolatile memory, and stores the threshold by the nonvolatile memory.

The control unit 290 is realized by the CPU 190 (FIG. 2) reading and executing a program from the storage device 180, and controls each unit of the smartphone 100 to execute various functions.
The touch operation detection unit 292 detects a touch operation on the touch panel 110. The touch operation detection unit 292 corresponds to an example of the touch operation detection unit 14 (FIG. 1).
The touch sensitivity setting unit 291 sets the detection sensitivity of the touch operation detection unit 292. The touch sensitivity setting unit 291 corresponds to an example of the touch sensitivity setting unit 13 (FIG. 1).

Based on the detection result of the proximity sensor 120, the approach detection unit 294 detects the approach state of the object other than the object used for the touch operation to the touch panel 110. The approach detection unit 294 corresponds to an example of the approach detection unit 16 (FIG. 1).
The detection suppression unit 293 suppresses the detection of the touch operation performed by the touch operation detection unit 292 when the proximity detection unit 294 detects an approaching state of the object other than the object used for the touch operation to the touch panel 110. The detection suppression unit 293 corresponds to an example of the detection suppression unit 15 (FIG. 1).

The approach sensitivity setting unit 295 sets the detection sensitivity of the approach detection unit 294. The approach sensitivity setting unit 295 corresponds to an example of the approach sensitivity setting unit 17 (FIG. 1).
In particular, the approach sensitivity setting unit 295 sets the detection sensitivity of the approach detection unit 294 based on the threshold value stored in the threshold value storage unit 281. For example, the approach sensitivity setting unit 295 acquires information on the detection sensitivity of the touch operation detection unit 292 from the touch sensitivity setting unit 291, reads a threshold value corresponding to the detection sensitivity of the touch operation detection unit 292 from the threshold storage unit 281, Set in the approach detection unit 294.

Next, detection of a touch operation by the touch panel 110 and the touch operation detection unit 292 will be described with reference to FIG.
FIG. 5 is an explanatory diagram illustrating an example of a state in which the user's finger approaches the touch panel. In the figure, the user's finger F is at a distance D from the touch panel 110.
When the user brings the finger F closer to the touch panel 110 (and is further brought into contact), electrostatic capacity is generated between the touch panel 110 and the finger F due to the human body having conductivity. The capacitance C generated between the touch panel 110 and the finger F is inversely proportional to the distance D between the touch panel 110 and the finger F, as shown in Expression (1).

Here, ε represents the dielectric constant, and S represents the area of the finger F.
When the capacitance C is equal to or greater than the threshold value, the touch operation detection unit 292 determines that there is a touch operation and detects the touch position, thereby detecting a touch operation performed by the user approaching or touching the touch panel with a finger or the like. can do.

Next, with reference to FIG. 6, detection of an approach state of an object to the touch panel 110 by the proximity sensor 120 and the approach detection unit 294 will be described.
FIG. 6 is an explanatory diagram illustrating an example of reflection of infrared light by an object.
In the proximity sensor 120, the light emitting element 121 emits infrared light. Then, the light receiving element 122 receives the infrared light reflected by the object Obj to be detected.

  The approach detection unit 294 compares the amount of light received by the light receiving element 122 with a threshold value, and determines that the object is in an approaching state to the touch panel 110 when the amount of received light is equal to or greater than the threshold value. Further, when the proximity sensor 120 is installed in the vicinity of the speaker, or when a predetermined condition is satisfied, for example, the amount of light received by the plurality of proximity sensors 120 exceeds a threshold value, the proximity detection unit 294 is used for the touch operation. An approaching state to the touch panel 110 of an object other than the object to be detected is detected.

Next, the relationship between the threshold set by the approach sensitivity setting unit 295 and the detection sensitivity of the approach detection unit 294 will be described with reference to FIG.
FIG. 7 is a graph showing an example of the relationship between the distance between the touch panel 110 and the object and the amount of light received by the light receiving element 122. The horizontal axis of the figure shows the distance between the object to be detected and the touch panel 110. The vertical axis represents the amount of light received by the light receiving element 122. A line L11 indicates the relationship between the distance between the predetermined object and the touch panel 110 and the amount of light received by the light receiving element 122.

  In the example of FIG. 7, there are a touch panel normal mode for a user to perform a touch operation with a bare hand and a touch panel high sensitivity mode for a user to perform a touch operation with a finger wearing a glove. When the user wears gloves, the change in the capacitance of the touch panel 110 is smaller than that of a bare hand. Therefore, in the touch panel high sensitivity mode, the touch sensitivity setting unit 291 sets a relatively small threshold value in the touch operation detection unit 292. The touch operation detection unit 292 uses the threshold value to determine that there is a touch operation even with a relatively small change in capacitance. That is, the detection sensitivity of the touch operation detection unit 292 is set to be relatively high.

  The threshold value Th1 is a threshold value set in the approach detection unit 294 by the approach sensitivity setting unit 295 in the touch panel normal mode. In this case, when the distance between the touch panel 110 and the predetermined object is D1 or less, the approach detection unit 294 indicates the approach state of the object to the touch panel 110 to the touch panel 110 of an object other than the object used for the touch operation. Detect as approaching state.

  On the other hand, the threshold Th <b> 2 is a threshold set by the proximity detection setting unit 295 in the proximity detection unit 294 in the touch panel high sensitivity mode. In this case, when the distance between the touch panel 110 and the predetermined object is D2 or less, the approach detection unit 294 indicates the approach state of the object to the touch panel 110 to the touch panel 110 of an object other than the object used for the touch operation. Detect as approaching state.

Thus, in comparison with the case of the touch panel normal mode, in the touch panel high sensitivity mode, the approach detection unit 294 has the touch panel 110 of an object other than the object used for the touch operation even when the distance between the touch panel 110 and the object is large. Detect the approaching state.
Here, as described for the touch panel input device 10 (FIG. 1), the touch operation detection unit 292 detects a relatively small change in capacitance on the touch panel 110 as a touch operation in the touch panel high sensitivity mode. Therefore, the touch operation detection unit 292 determines that there is a touch operation in a state where the distance between the touch panel 110 and the object is relatively long. In this respect, there is a high possibility that the touch operation detection unit 292 erroneously detects the touch operation.

Therefore, in the touch panel high sensitivity mode, the approach sensitivity setting unit 17 sets the threshold Th2 smaller than the threshold Th1 in the touch panel normal mode, thereby setting the detection sensitivity of the approach detection unit 294 high. Thereby, the approach detection unit 294 detects the approaching state of the object other than the object used for the touch operation to the touch panel 11 even when the object is relatively away from the touch panel 110.
Based on the detection result of the approach detection unit 294, the detection suppression unit 293 may suppress the detection of the touch operation performed by the touch operation detection unit 292, so that the touch operation detection unit 292 may erroneously detect the touch operation. Can be reduced.

  In addition, the operator who maintains the smartphone 100 adjusts (rewrites) the threshold value stored in the threshold value storage unit 281, so that the relationship between the detection sensitivity of the touch operation detection unit 292 and the detection sensitivity of the approach detection unit 294 is obtained. It can be adjusted easily. Thus, the operator can easily cope with variations in the characteristics of the touch sensor 112, the characteristics of the light emitting element 121, and the characteristics of the light receiving element 122 for each apparatus.

Next, the operation of the smartphone 100 will be described with reference to FIG.
FIG. 8 is a flowchart illustrating an example of a processing procedure in which the approach sensitivity setting unit 295 sets the threshold value of the approach detection unit 294. Similar to the example of FIG. 7, in the example of FIG. 8, the proximity sensitivity setting unit 295 sets the threshold value Th <b> 1 in the proximity detection unit 294 in the touch panel normal mode. On the other hand, in the touch panel high sensitivity mode, the approach sensitivity setting unit 295 sets the threshold Th2 in the approach detection unit 294.

The smartphone 100 is in a touch panel normal mode when activated. Therefore, the approach sensitivity setting unit 295 sets the threshold value Th1 in the approach detection unit 294 (step S101).
Next, the approach sensitivity setting unit 295 determines whether or not the touch panel high sensitivity mode has started (step S102). If it is determined that the touch panel high sensitivity mode has not started (step S102: NO), the process returns to step S102. That is, the approach sensitivity setting unit 295 waits for the start of the touch panel high sensitivity mode.

On the other hand, when it determines with touch panel high sensitivity mode having started in step S102 (step S102: YES), the approach sensitivity setting part 295 sets threshold value Th2 to the approach detection part 294 (step S111).
Next, the approach sensitivity setting unit 295 determines whether or not the touch panel high sensitivity mode has ended (step S112). If it is determined that the touch panel high sensitivity mode has not ended (step S112: NO), the process returns to step S112. That is, the approach sensitivity setting unit 295 waits for the touch panel high sensitivity mode to end.
On the other hand, when it determines with the touch panel high sensitivity mode having been complete | finished in step S112 (step S112: YES), it returns to step S101.

As described above, when the approach detection unit 294 detects the approach state of the object other than the object used for the touch operation to the touch panel 110, the detection suppression unit 293 detects the touch operation performed by the touch operation detection unit 292. Suppress. Further, the approach sensitivity setting unit 295 is closer to the touch sensitivity setting unit 291 when the detection sensitivity of the touch operation detection unit 292 is set to be relatively higher than when the touch sensitivity detection unit 292 is set to have a relatively low detection sensitivity. The detection sensitivity of the detection unit 294 is set high.
Thereby, as described with reference to FIG. 7, the possibility that the touch operation detection unit 292 erroneously detects the touch operation can be reduced.

  In particular, the approach detection unit 294 detects the approaching state of the object other than the object used for the touch operation to the touch panel 110 based on the detection result of the approach of the object to the touch panel 110 by the proximity sensor 120, so that the acceleration of the object The detection can be performed without depending on the above. Therefore, in the smartphone 100, even when the object approaches the touch panel with a relatively small acceleration, the possibility that the touch operation detection unit 292 erroneously detects the touch operation can be reduced.

There is a need for touch operation even when gloves are worn when the outside air temperature is low such as in winter. Therefore, in the smartphone 100, by setting the touch panel high sensitivity mode, it is possible to perform a touch operation even when wearing gloves.
On the other hand, if the detection sensitivity of the touch operation is high, the touch operation may be erroneously detected due to the proximity of the object to the touch panel when the user does not intend the touch operation, such as the approach of the user's head to the touch panel during a call. There is. Therefore, the proximity sensitivity setting unit 295 sets the detection sensitivity of the proximity detection unit 294 according to the detection sensitivity of the touch operation detection unit 292, thereby reducing the possibility of erroneous detection of the touch operation.

Further, the threshold storage unit 281 stores a threshold value of the detection sensitivity of the approach detection unit 294 for each detection sensitivity of the touch operation detection unit 292. Then, the approach sensitivity setting unit 295 sets the detection sensitivity of the approach detection unit based on the threshold value stored in the threshold value storage unit 281.
Thereby, the worker who maintains the smartphone 100 adjusts (rewrites) the threshold value stored in the threshold value storage unit 281 so that the detection sensitivity of the touch operation detection unit 292 and the detection sensitivity of the approach detection unit 294 are related. Can be adjusted easily. Therefore, the operator can easily cope with variations in the characteristics of the touch sensor 112, the characteristics of the light emitting element 121, and the characteristics of the light receiving element 122 for each apparatus.

  Further, the threshold storage unit 281 stores the threshold value of the detection sensitivity of the approach detection unit 294 in a nonvolatile memory. Thereby, even when the power supply of the smartphone 100 is once cut off (OFF), the proximity sensitivity setting unit 295 prompts the proximity detection unit 294 according to the detection sensitivity of the touch operation detection unit 292 immediately after the power source connection (ON). Detection sensitivity can be set.

Note that a program for realizing all or part of the functions of touch panel input device 10 or smartphone 100 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into a computer system and executed. By doing so, you may process each part. Here, the “computer system” includes an OS and hardware such as peripheral devices.
Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Furthermore, the “computer-readable recording medium” dynamically holds a program for a short time like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In this case, a volatile memory in a computer system serving as a server or a client in that case, and a program that holds a program for a certain period of time are also included. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes design changes and the like without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 10 Touch panel input device 11, 110 Touch panel 12, 120 Proximity sensor 13, 291 Touch sensitivity setting part 14, 292 Touch operation detection part 15, 293 Detection suppression part 16, 294 Approach detection part 17, 295 Approach sensitivity setting part 100 Smartphone 111 Display Device 112 Touch sensor 121 Light emitting element 122 Light receiving element 141 Audio input circuit 142 Audio output circuit 230 Communication unit 280 Storage unit 281 Threshold storage unit 290 Control unit

Claims (5)

A touch panel;
A proximity sensor for detecting an approach of an object to the touch panel;
A touch operation detection unit for detecting a touch operation on the touch panel;
A touch sensitivity setting unit for setting the detection sensitivity of the touch operation detection unit;
Based on the detection result of the proximity sensor, an approach detection unit that detects a state in which an object other than the object used for the touch operation has approached the touch panel;
A detection suppression unit that suppresses detection of a touch operation performed by the touch operation detection unit when the approach detection unit detects a state in which an object other than an object used for the touch operation has approached the touch panel;
When the touch sensitivity setting unit sets the detection sensitivity of the touch operation detection unit to be relatively high, the detection sensitivity of the proximity detection unit is higher than when the detection sensitivity of the touch operation detection unit is set to be relatively low. The proximity sensitivity setting section to be set;
A touch panel input device comprising: A threshold storage unit that stores a threshold value of the detection sensitivity of the approach detection unit for each detection sensitivity of the touch operation detection unit;
The touch panel input device according to claim 1, wherein the approach sensitivity setting unit sets detection sensitivity of the approach detection unit based on the threshold value stored in the threshold value storage unit.   The touch panel input device according to claim 2, wherein the threshold storage unit stores the threshold in a nonvolatile memory. A touch panel;
A proximity sensor for detecting an approach of an object to the touch panel;
A touch operation detection control method for a device comprising:
A touch operation detection step of detecting a touch operation on the touch panel;
A touch sensitivity setting step for setting a detection sensitivity in the touch operation detection step;
Based on the detection result of the proximity sensor, an approach detection step of detecting a state in which an object other than the object used for the touch operation has approached the touch panel;
In the approach detection step, when detecting a state in which an object other than the object used for the touch operation has approached the touch panel, a detection suppression step for suppressing detection of the touch operation performed in the touch operation detection step;
In the touch sensitivity setting step, when the detection sensitivity in the touch operation detection step is set to be relatively high, in the approach detection step, compared to the case where the detection sensitivity in the touch operation detection step is set to be relatively low. Approach sensitivity setting step to set detection sensitivity high,
The touch operation detection control method characterized by comprising. A touch panel;
A proximity sensor for detecting an approach of an object to the touch panel;
A computer for controlling touch operation detection of a device comprising:
A touch operation detection step of detecting a touch operation on the touch panel;
A touch sensitivity setting step for setting a detection sensitivity in the touch operation detection step;
Based on the detection result of the proximity sensor, an approach detection step of detecting a state in which an object other than the object used for the touch operation has approached the touch panel;
In the approach detection step, when detecting a state in which an object other than the object used for the touch operation has approached the touch panel, a detection suppression step for suppressing detection of the touch operation performed in the touch operation detection step;
In the touch sensitivity setting step, when the detection sensitivity in the touch operation detection step is set to be relatively high, in the approach detection step, compared to the case where the detection sensitivity in the touch operation detection step is set to be relatively low. Approach sensitivity setting step to set detection sensitivity high,
A program for running

Images