JP2012203887A - Electronic device and calibration control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic device capable of calibrating a touch panel automatically and accurately with any timing.SOLUTION: A mobile phone 100 comprises a display side housing 106 having a touch panel 109 that receives an operational input corresponding to the position that an object is in contact with and an operation side housing 150 having a facing part movably coupled to the display side housing 106 via a hinge structure 152 and facing the touch panel 109. The mobile phone 100 has protrusions 156 that are provided on the facing part of the operation side housing 150 and that come into contact with the touch panel 109 with the facing part facing the touch pane 109. The mobile phone 100 detects the input signal corresponding to a position on the touch panel 109 that the protrusions are to be in contact with, and calibrates the input signal from the touch panel 109.

Description

  The present invention relates to an electronic apparatus and a calibration control program.

  2. Description of the Related Art Conventionally, an electronic device such as a mobile phone is known that includes a touch panel that can perform various operations by pressing a display screen with, for example, a user's finger. For such a touch panel, various methods such as a resistance pressure-sensitive method, a capacitance method, an electromagnetic induction method, and an infrared method are used.

  In such a touch panel, the detection accuracy of the pressed position of the touch panel is incorrect due to effects such as deterioration of parts over time or deterioration due to heat, and it is erroneously recognized that a location different from the actually pressed position is pressed. There is.

  The following prior art documents disclose a technique for performing calibration when coordinate data that is not intended by the user is input, assuming that the closest coordinate that is expected to be input is input.

JP 2001-67186 A

  Since the technique disclosed in the above prior art document determines the coordinates intended by the user based on the assumption, accurate calibration cannot always be performed. Further, since calibration is not executed unless the user performs an operation, it is difficult to execute calibration at an arbitrary timing led by the electronic device.

  The disclosed technology has been made in view of the above, and an object thereof is to realize an electronic device and a calibration control program capable of automatically performing accurate touch panel calibration processing at an arbitrary timing. .

  In one aspect, an electronic device disclosed in the present application includes a first housing including a touch panel that receives an operation input according to a position where an object abuts. In addition, the electronic device includes a second casing that is movably connected to the first casing and includes a facing portion that faces the touch panel. In addition, the electronic device includes a protrusion that is provided at the facing portion and that contacts the touch panel in a state where the facing portion faces the touch panel. In addition, the electronic device includes an input detection unit that detects an input signal corresponding to the position of the touch panel with which the protrusion abuts. In addition, the electronic device includes a calibration control unit that calibrates the input signal of the touch panel based on the input signal detected by the input detection unit.

  According to one aspect of the electronic device disclosed in the present application, it is possible to automatically perform accurate touch panel calibration processing at an arbitrary timing.

FIG. 1 is a diagram illustrating an appearance of a mobile phone according to an embodiment. FIG. 2 is a diagram illustrating an appearance of the mobile phone according to the embodiment. FIG. 3 is a diagram illustrating a hardware configuration of the mobile phone according to the embodiment. FIG. 4 is a diagram illustrating functional blocks of the mobile phone according to the embodiment. FIG. 5 is a diagram showing an outline of processing for detecting the hit point position of the touch panel by the input detection unit. FIG. 6 is a flowchart of the calibration process.

  Embodiments of an electronic device and a calibration control program disclosed in the present application will be described below in detail with reference to the drawings. The disclosed technology is not limited by this embodiment. For example, in the following embodiments, a mobile phone will be described as an example of an electronic device. However, the present invention is not limited thereto, and any electronic device having a touch panel function may be used. In the following embodiments, a cellular phone having a resistance pressure-sensitive touch panel function will be described as an example. However, the present invention is not limited thereto, and touch panel functions such as a capacitance method, an electromagnetic induction method, and an infrared method are provided. Any electronic device may be used. Further, in the following embodiments, a foldable mobile phone in which a display-side casing provided with a touch panel type display unit and an operation-side casing are coupled to each other by a hinge structure will be described as an example. However, it is not limited to this. For example, the operation side casing may be an electronic device that is movably connected to a display side casing including a touch panel display unit and includes a facing unit facing the display unit.

  1 and 2 are views showing the appearance of the mobile phone according to the embodiment. As shown in FIGS. 1 and 2, the mobile phone 100 includes a display-side housing 106 and an operation-side housing 150. The display-side housing 106 and the operation-side housing 150 are connected to each other via a hinge structure 152 so as to be rotatable. FIG. 1 illustrates a state where the display-side housing 106 and the operation-side housing 150 are opened from each other. FIG. 2 illustrates a state in which the display-side housing 106 and the operation-side housing 150 are closed to each other. As shown in FIGS. 1 and 2, the mobile phone 100 is a foldable mobile phone including a display-side housing 106 and an operation-side housing 150.

  In addition, as shown in FIG. 1, the display-side housing 106 includes a touch panel display unit 107 on a surface facing the display-side housing 106 and the operation-side housing 150 in a closed state. In addition, the operation-side casing 150 includes a facing surface 151 that faces the display unit 107 in a state where the display-side casing 106 and the operation-side casing 150 are closed. The operation-side housing 150 includes a plurality of keys 154 for performing various operations and four protrusions 156a to 156d on the facing surface 151. The protrusions 156a to 156d are provided at positions that contact the four corners of the display unit 107 in a state where the display-side housing 106 is folded.

  FIG. 3 is a diagram illustrating a hardware configuration of the mobile phone according to the embodiment. As shown in FIG. 3, the mobile phone 100 of this embodiment includes an antenna 102, a wireless communication unit 104, a display unit 107, a microphone 108, a speaker 110, and a voice input / output unit 112. The mobile phone 100 includes a memory 130, an SD (Secure Digital) card insertion slot 135, and a processor 140. An SD card 136 is inserted into the SD card insertion slot 135.

  The wireless communication unit 104 performs wireless communication of various data such as voice and characters via the antenna 102. In addition, the display unit 107 is provided with a touch panel 109 that displays various types of information such as characters and images and receives inputs of various types of user operations.

  The voice input / output unit 112 is an input / output interface that inputs voice through the microphone 108 and outputs voice through the speaker 110.

  The memory 130 includes a ROM (Read Only Memory) 132 that stores data for executing various functions of the mobile phone 100 and a RAM (Random Access Memory) 134 that stores various programs for executing various functions. .

  The processor 140 is an arithmetic processing unit such as a CPU (Central Processing Unit) that executes various programs stored in the ROM 132 or the RAM 134. The processor 140 controls the wireless communication unit 104, the display unit 107, the touch panel 109, and the voice input / output unit 112 described above by executing various programs stored in the ROM 132 or the RAM 134. The program executed by the processor 140 is not only stored in the ROM 132 or the RAM 134 but also recorded in a storage medium that can be distributed such as a CD (Compact Disc) -ROM or a memory medium, and read from the storage medium for execution. can do. In addition, the program is stored in a server connected via a network so that the program operates on the server, and a service is requested in response to a request from the mobile phone 100 connected via the network. It can also be provided to the mobile phone 100.

  FIG. 4 is a diagram illustrating functional blocks of the mobile phone according to the embodiment. As shown in FIG. 4, the mobile phone 100 includes an open / close detection unit 161, a timer control unit 162, and an input detection unit 164 as functional blocks realized by the processor 140 reading and executing various programs from the ROM 132 or the RAM 134. Prepare. In addition, the mobile phone 100 includes a calibration control unit 166 and a correction value storage unit 168 as functional blocks realized by the processor 140 reading various programs from the ROM 132 or the RAM 134 and executing them.

  The open / close detection unit 161 detects that the display-side casing 106 and the operation-side casing 150 are folded together. The open / close detection unit 161 detects, for example, a magnetic flux density from a magnet provided in the display-side casing 106 with a Hall IC (Integrated Circuit) provided in the operation-side casing 150, and the magnitude of the detected magnetic flux density. Based on this, the open / close state of the display side housing 106 and the operation side housing 150 is detected. For example, when the magnetic flux density detected by the Hall IC is larger than a preset threshold, the open / close detection unit 161 detects that the display-side housing 106 and the operation-side housing 150 are folded together.

  The timer control unit 162 measures an elapsed time since the display-side housing 106 and the operation-side housing 150 are folded together by the open / close detection unit 161.

  When an object (for example, a user's finger or protrusions 156a to 156d) comes into contact with the touch panel 109, the input detection unit 164 detects an input signal corresponding to the position where the object comes into contact. For example, the input detection unit 164 detects two voltage values according to the position of the touch panel 109 in contact with the object. In addition, the input detection unit 164 obtains, for example, two-dimensional position coordinates where an object on the touch panel 109 is in contact based on the two detected voltage values. The input detection unit 164 uses, for example, a table in which two-dimensional position coordinates corresponding to two voltage values are stored in advance, or two-dimensional position coordinates are calculated according to the detected two voltage values. By using the coordinate calculation formula, the position coordinates where the object on the touch panel 109 abuts are obtained. When the protrusions 156a to 156d abut on the touch panel 109, the input detection unit 164 obtains the position coordinates where the protrusions 156a to 156d on the touch panel 109 abut for each of the protrusions 156a to 156d.

  FIG. 5 is a diagram showing an outline of processing for detecting the hit point position of the touch panel by the input detection unit. As shown in FIG. 5, the touch panel 109 includes two opposing resistance films 200 and 300. Further, the resistance film 200 is provided with a positive electrode 202 and a negative electrode 204 on two opposing sides, respectively. The resistance film 300 is provided with a positive electrode 302 and a negative electrode 304 on two opposite sides in a direction orthogonal to the direction connecting the positive electrode 202 and the negative electrode 204, respectively.

  Positive electrode 202 is connected to terminal 206, and positive electrode 302 is connected to terminal 306. Negative electrode 204 is connected to terminal 208, and negative electrode 304 is connected to terminal 308. On the other hand, the power source 400 has a positive electrode side connected to the terminal 402 and a negative electrode side connected to the terminal 404. A switch 406 provided in the terminal 402 is provided so as to be connectable to either the terminal 206 or the terminal 306. On the other hand, the switch 408 provided in the terminal 404 is provided so as to be connectable to either the terminal 208 or the terminal 308.

  The input detection unit 164 connects the switch 408 to the terminal 208 when the switch 406 is connected to the terminal 206. On the other hand, the input detection unit 164 connects the switch 408 to the terminal 308 when connecting the switch 406 to the terminal 306. That is, the input detection unit 164 does not apply a voltage to the resistance film 300 when a voltage is applied to the resistance film 200, and does not apply a voltage to the resistance film 300. No voltage is applied to.

  Suppose that the pressing point 210 of the resistance film 200 is pressed by an object. Then, the resistance film 200 bends and contacts the resistance film 300. A point on the resistance film 300 that contacts the pressing point 210 is referred to as a pressing point 310. The input detection unit 164 applies a voltage to the resistance film 200 by connecting the switch 406 to the terminal 206 and connecting the switch 408 to the terminal 208 in a state where the resistance film 200 and the resistance film 300 are in contact with each other. Then, a potential gradient is generated from the positive electrode 202 to the negative electrode 204 of the resistance film 200. For example, a voltage having the same potential is applied to the line 212, and the voltage at the pressing point 210 appears at the pressing point 310. In this state, the input detection unit 164 obtains the potential of the pressing point 310 by measuring the potential of the terminal 308, for example.

  Next, the input detection unit 164 switches the switch 406 and the switch 408 while the resistance film 200 and the resistance film 300 are in contact with each other. That is, the input detection unit 164 applies a voltage to the resistance film 300 by connecting the switch 406 to the terminal 306 and connecting the switch 408 to the terminal 308. Then, a potential gradient is generated from the positive electrode 302 to the negative electrode 304 of the resistance film 300, for example, a voltage having the same potential is applied to the line 312, and the voltage at the pressing point 310 appears at the pressing point 210. In this state, the input detection unit 164 obtains the potential of the pressing point 210 by measuring the potential of the terminal 208, for example.

  And the input detection part 164 is based on the electric potential of the press point 310 calculated | required in the state which applied the voltage to the resistive film 200, and the electric potential of the press point 210 calculated | required in the state which applied the voltage to the resistive film 300, A position coordinate where an object abuts on the touch panel 109 is detected.

  Returning to the description of FIG. 4, the calibration control unit 166 performs calibration of the input signal of the touch panel 109 based on the input signal detected by the input detection unit 164. For example, the calibration control unit 166 calibrates the input signal of the touch panel 109 based on the input signal detected by the input detection unit 164 when the elapsed time measured by the timer control unit 162 exceeds a preset time. Execute (Calibration). Note that the set time serving as the threshold of the elapsed time measured by the timer control unit 162 may be fixed to an initial value, or may be set to an arbitrary value by a user operation.

  In addition, for example, the calibration control unit 166 may detect the input detection unit 164 when the opening / closing detection unit 161 detects that the display-side housing 106 and the operation-side housing 150 are folded, and reaches a preset time. Based on the input signal detected by, the input signal of the touch panel 109 is calibrated. The time for executing calibration can be arbitrarily set by a user operation.

  Further, the calibration control unit 166 uses the touch position of the touch panel 109 based on the contact position coordinates detected by the input detection unit 164 and the reference position coordinates set in advance according to the contact positions of the protrusions 156a to 156d. Perform input signal calibration. For example, for each of the protrusions 156a to 156d, the calibration control unit 166 performs a difference in each dimension between the two-dimensional contact position coordinates detected by the input detection unit 164 and a preset two-dimensional reference position coordinate. And the difference is obtained as a correction value. For example, when the two orthogonal axes on the display surface of the touch panel 109 are the x axis and the y axis, the correction value is obtained as follows (x axis direction: -2, y axis direction: -3). The calibration control unit 166 stores the correction value obtained for each of the protrusions 156a to 156d in the correction value storage unit 168.

  In the present embodiment, the four protrusions 156a to 156d are provided so as to be in contact with the four corners of the rectangular touch panel 109, but the present invention is not limited thereto. For example, two protrusions can be provided so as to be in contact with two corners on the diagonal line of the rectangular touch panel 109, such as a combination of the protrusions 156a and 156d or a combination of the protrusions 156b and 156c.

  The correction value storage unit 168 is a storage unit that stores correction values of coordinates obtained by the calibration control unit 166. The correction value storage unit 168 is a data storage unit provided in the memory 130, for example.

  Note that the input detection unit 164 outputs the actually detected contact position coordinates of the object to the calibration control unit 166 when executing the calibration process. On the other hand, when the correction value is stored in the correction value storage unit 168 except when the calibration process is executed, the input detection unit 164 stores the contact position coordinates of the actually detected object as the correction value storage. Correction is performed using the correction value stored in the unit 168. For example, when the correction value is stored in the correction value storage unit 168 for each of the protrusions 156a to 156d, the input detection unit 164 selects one of the correction values and corrects the object actually detected. It can be used for correcting tangent position coordinates. For example, the input detection unit 164 selects a reference position coordinate that is closest to the contact position coordinate of the actually detected object from the reference position coordinates corresponding to the protrusions 156a to 156d. The input detection unit 164 can use the correction value of the protrusion corresponding to the selected reference position coordinates for correcting the actually detected contact position coordinates of the object.

  Next, the flow of calibration processing will be described. FIG. 6 is a flowchart of the calibration process. As shown in FIG. 6, first, the open / close detection unit 161 determines whether opening / closing between the display-side housing 106 and the operation-side housing 150 is detected (step S <b> 101). The open / close detection unit 161 repeats Step S101 until opening / closing between the display-side housing 106 and the operation-side housing 150 is detected.

  If it is determined that opening / closing between the display-side housing 106 and the operation-side housing 150 is detected (Yes in step S101), the open / close detection unit 161 determines whether the display-side housing 106 and the operation-side housing 150 are folded. It is determined whether or not (step S102).

  When it is determined that the display-side housing 106 and the operation-side housing 150 are folded (Yes in step S102), the timer control unit 162 issues a timer (step S103). Subsequently, the calibration control unit 166 determines whether a preset time has elapsed after the timer is issued by the timer control unit 162 and the timer has expired or whether the current time is a preset designated time. Is determined (step S104).

  The calibration control unit 166 determines that the timer has expired after a preset time has elapsed since the timer was issued by the timer control unit 162 or that the current time is a preset designated time ( In step S104, Yes), the calibration process is started. The calibration control unit 166 determines that a preset time has elapsed after the timer is issued by the timer control unit 162 and the timer has expired, or the current time is determined to be a preset designated time. The determination in step S104 is repeated (No in step S104).

  The calibration control unit 166 enables the touch panel 109 (step S106). Subsequently, the input detection unit 164 detects two-dimensional position coordinates for each of the protrusions 156a to 156d according to the hit point position of the protrusion 156 of the touch panel 109 (step S107). The calibration control unit 166 calculates the correction value of the position coordinate based on the position coordinate detected by the input detection unit 164 and the reference position coordinate set in advance according to the contact position of the protrusions 156a to 156d. (Step S108). The calibration control unit 166 stores the calculated correction value in the correction value storage unit 168 (step S109). The calibration control unit 166 disables the touch panel 109 (step S110) and ends the process.

  On the other hand, if it is determined that the display-side casing 106 and the operation-side casing 150 are not folded (No in step S102), the calibration control unit 166 transitions to S101 and waits for the next opening / closing detection. To do.

  As described above, the mobile phone 100 according to the present embodiment can automatically perform an accurate touch panel calibration process at an arbitrary timing. That is, the mobile phone 100 according to the present embodiment is provided with a protrusion that abuts the touch panel 109 on a facing portion that faces the touch panel 109, so that the user can automatically and accurately correct the specified position without pressing the designated position. Calibration processing of the touch panel 109 can be executed.

  Further, the folding mobile phone 100 as in the present embodiment is often folded and left when the mobile phone 100 is not used. Therefore, the mobile phone 100 according to the present embodiment executes a calibration process when a preset time has elapsed since it was detected that the display-side casing 106 and the operation-side casing 150 were folded. Therefore, according to the mobile phone 100 of the present embodiment, the touch panel 109 can be calibrated using the time estimated that the mobile phone 100 is not used.

  In addition, the mobile phone 100 according to the present embodiment performs calibration of the touch panel 109 when the preset time is reached in a state where the display-side housing 106 and the operation-side housing 150 are folded. Therefore, according to the mobile phone 100 of the present embodiment, the touch panel 109 can be calibrated by using a time when the mobile phone 100 is not used, such as a sleeping time.

  The present embodiment has been described mainly with respect to the mobile phone and the calibration control method. However, the present embodiment is not limited to this, and by executing a calibration control program prepared in advance by a computer, the same as the above-described embodiment. The function can be realized. That is, an electronic device that causes the calibration control control program to execute processing is movably connected to a first housing having a touch panel that receives an operation input according to a position where an object abuts, and the first housing, A second housing having a facing portion facing the touch panel. In addition, an electronic device that causes the calibration control control program to execute processing includes a protrusion that is provided in the facing portion and that contacts the touch panel in a state where the facing portion faces the touch panel. The calibration control control program causes such an electronic device to execute a process of detecting an input signal corresponding to the position of the touch panel with which the protrusion comes into contact. Further, the calibration control control program causes such an electronic apparatus to execute a process of calibrating the input signal of the touch panel based on the detected input signal. Note that the calibration control program can be distributed to computers via a communication network such as the Internet. The calibration control program can also be executed by being recorded on a memory, a hard disk, or other computer-readable recording medium provided in the electronic apparatus, and being read from the recording medium by the computer.

DESCRIPTION OF SYMBOLS 100 Mobile phone 106 Display side housing | casing 107 Display part 109 Touch panel 150 Operation side housing | casing 151 Opposing surface 152 Hinge structure 156a-156d Protrusion 161 Opening / closing detection part 162 Timer control part 164 Input detection part 166 Calibration control part 168 Correction value storage part 200,300 resistive film

Claims (5)

A first housing including a touch panel that receives an operation input according to a position where the object comes into contact;
A second housing that is movably coupled to the first housing and has a facing portion facing the touch panel;
Protrusions that are provided in the facing portion and that come into contact with the touch panel with the facing portion facing the touch panel;
An input detection unit that detects an input signal according to the position of the touch panel with which the protrusion abuts;
A calibration control unit that calibrates the input signal of the touch panel based on the input signal detected by the input detection unit;
An electronic device comprising: The electronic device has a folding structure in which the first housing and the second housing are connected to each other through a hinge structure so as to freely rotate.
An open / close detection unit for detecting that the first casing and the second casing are folded;
A timer control unit that measures an elapsed time since it is detected that the first housing and the second housing are folded by the open / close detection unit;
When the elapsed time measured by the timer control unit exceeds a preset time, the calibration control unit calibrates the input signal of the touch panel based on the input signal detected by the input detection unit. The electronic device according to claim 1, wherein: The electronic device has a folding structure in which the first housing and the second housing are connected to each other through a hinge structure so as to freely rotate.
An opening / closing detector for detecting that the first casing and the second casing are folded;
The calibration control unit is detected by the input detection unit when a preset time is reached in a state where the first and second cases are detected to be folded by the open / close detection unit. The electronic device according to claim 1, wherein calibration of the input signal of the touch panel is executed based on the input signal that has been input. The touch panel is a resistance pressure-sensitive touch panel including two opposing resistance films,
The input detection unit applies voltage sequentially to the two resistive films in a state in which the two resistive films are in contact with each other due to the contact pressure of the object, so that the input detection unit at each contact point of the two resistive films. Detecting the voltage value, detecting the contact position coordinates of the object according to the detected voltage value,
The calibration control unit calibrates an input signal of the touch panel based on a contact position coordinate detected by the input detection unit and a reference position coordinate set in advance according to the contact position of the protrusion. The electronic device according to claim 1, wherein the electronic device is executed. A first housing having a touch panel that accepts an operation input according to a position where the object comes into contact; and a second housing that is movably connected to the first housing and has a facing portion facing the touch panel. An electronic device provided with a protrusion that is provided in the facing portion and that comes into contact with the touch panel in a state where the facing portion faces the touch panel.
Detecting an input signal corresponding to the position of the touch panel with which the protrusion abuts,
A calibration control program for executing a process of calibrating an input signal of the touch panel based on the detected input signal.

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