JP4741402B2 - Coordinate input device with display function - Google Patents

Description

  The present invention relates to a coordinate input device with a display function, and more particularly to a technique for reducing power consumption.

  Some computers in recent years function as a coordinate input device with a display function that uses an input surface (for example, a touch panel) of a coordinate input device as display means such as a display. The coordinate input device with a display function consumes a large amount of power especially when displaying with a display function. When using a computer as a coordinate input device with a display function, reduction of the power consumption becomes an issue, and this problem is solved. Various attempts have been made for this purpose.

In one example, a normal operation mode and a low power consumption mode in which power consumption is reduced by stopping the display function are prepared. There is one that shifts to a normal operation mode when a user instruction operation on the input surface is detected in the low power consumption mode (for example, Patent Document 1).
JP-A-10-1111749

  However, in the above-described conventional technology, even if the user makes an erroneous contact with the input surface, the low power consumption mode is shifted to the normal operation mode. In this case, there is a problem that power is wasted.

  This problem does not occur only in the coordinate input device with a display function that uses the input surface of the coordinate input device as a display means. For example, the input surface and the display of the coordinate input device are displayed like a mobile phone with a touch panel. The same problem occurs in the coordinate input device with a display function that is separated from the means.

  Accordingly, one of the objects of the present invention is to provide a coordinate input device with a display function that realizes suppressing the shift to the normal operation mode due to erroneous contact with the input surface.

  A coordinate input device with a display function according to the present invention for solving the above problems is a coordinate input device with a display function, which is a coordinate input device having a display means, and detects that a user instruction operation is performed on an input surface. Acquired by a user instruction operation detecting means, a coordinate acquisition means for acquiring a position indicating a position on the input surface instructed by a user instruction operation detected by the user instruction operation detecting means, and acquired by the coordinate acquisition means Determination means for determining whether or not one or a plurality of coordinates meet a predetermined condition; and display means operation restriction means for restricting the operation of the display means based on a determination result of the determination means. It is characterized by.

  According to this, the operation of the display means can be limited based on whether or not the coordinates meet a predetermined condition. In one example, the operation of the display means can be limited only when the user-designated position forms a triangle. For this reason, the transition to the normal operation mode due to erroneous contact is suppressed.

  The coordinate input device with a display function further includes pattern image information storage means for storing pattern image information indicating a pattern image, wherein the determination means has one or more coordinates acquired by the coordinate acquisition means. It may be determined whether or not a pattern image indicated by the pattern image information stored in the pattern image information storage unit is to be configured.

  According to this, the operation of the display means can be limited based on whether or not the coordinates constitute a pattern image.

  Furthermore, in each of the coordinate input devices with a display function, an illumination unit that controls the illumination unit according to whether an illumination unit that illuminates the input surface and a user instruction operation is detected by the user instruction operation detection unit And means.

  According to this, since the user can illuminate the input surface while performing an instruction operation, it is possible to prevent an erroneous operation of the user, such as erroneously instructing that the input surface should be pointed out of the input surface. Will be able to.

  Embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing an appearance of a mobile phone 1 according to the present embodiment. The cellular phone 1 is a folding cellular phone that functions as a coordinate input device with a display function, and includes a touch screen 10, an LCD (Liquid Crystal Display) 20, a power button 30, a selection button 31, and a scroll button 32. Configured.

  FIG. 2 is a diagram showing a system configuration of the mobile phone 1. As shown in the figure, the mobile phone 1 includes a CPU 100, a memory 101, a voice input / output unit 102, a baseband processing unit 103, an LCD control unit 104, a memory 105, a touch panel control unit 106, a memory 107, a touch screen 10, and an LCD 20 It is comprised including.

  The CPU 100 performs processing related to control and communication of each unit of the mobile phone 1. The memory 101 stores various data used for the processing of the CPU 100.

  The voice input / output unit 102 includes a microphone and a speaker, collects a voice uttered by a user, outputs the voice as an electrical signal to the CPU 100, converts the electrical signal input from the CPU 100 into a voice, and outputs the voice.

  The baseband processing unit 103 receives a radio signal from a base station apparatus (not shown), converts it to a signal having a predetermined frequency (baseband frequency), and outputs the signal to the CPU 100. Also, the signal input from CPU 100 is converted into a radio signal and transmitted to the base station apparatus.

  The touch screen 10 includes a touch panel 300 that functions as an input surface of a coordinate input device, and the input surface also functions as an LCD 301 that is a display device. When the user touches the input surface, the touch panel 300 acquires coordinate information indicating the coordinates of the touched position and outputs the coordinate information to the touch panel control unit 106. The LCD 301 displays information in accordance with instructions from the LCD control unit 104.

  The LCD 20 is also a display device that displays information in accordance with instructions from the LCD control unit 104. As described above, the touch screen 10 also includes a display device, and the mobile phone 1 includes two display devices.

  The LCD 301 and the LCD 20 include an LED (Light-Emitting Diode) 302 and an LED 200, respectively. Both the LED 302 and the LED 200 function as a backlight. The LED 302 also functions as an illumination unit that illuminates the input surface of the touch panel 300.

  The touch panel control unit 106 controls the touch panel 300. Specifically, the coordinate information input from the touch panel 300 is output to the CPU 100. The memory 107 stores various data used for processing of the touch panel control unit 106.

  The mobile phone 1 has a normal operation mode in which all of the LCD 20, LED 200, LCD 301, and LED 302 are turned on / displayed, a first low power consumption mode in which the LCD 20 and LCD 301 display and the LED 200 and LED 302 are turned off, LCD 20, LED 200, and LCD 301 Is turned off / hidden, and the second low power consumption mode in which the LED 302 is lit, and the third low power consumption mode in which the LCD 20, LED 200, LCD 301, and LED 302 are all turned off / hidden. The touch panel control unit 106 enables one of these modes by switching between these modes. FIG. 5 is a transition diagram showing transitions between these modes. Details of the processing for this will be described later.

  The LCD control unit 104 controls the LCD 301 and the LCD 20. Specifically, information input from the CPU 100 is displayed on the LCD 20 or the LCD 301. The memory 105 stores various data used for processing of the LCD control unit 104.

  Hereinafter, functions related to the operation of the mobile phone 1 by the user will be described.

  The power button 30, the selection button 31, and the scroll button 32 are operation means provided in the mobile phone 1 as hardware. On the other hand, the touch screen 10 realizes operation means by software. Hereinafter, each will be described in detail.

  The power button 30 is a push button for turning on / off the power of the mobile phone 1. When the user presses the power button 30, the power of the mobile phone 1 is switched on / off.

  The selection button 31 and the scroll button 32 are used when the user selects an object (icon, link, etc.) displayed on the LCD 20. That is, the user uses the scroll button 32 to highlight one of the one or more objects displayed on the LCD 20. When the user presses the selection button 31 while an object is highlighted, the CPU 100 starts processing corresponding to the object.

  Next, operation means realized by the touch screen 10 will be described. FIG. 3 is a diagram illustrating an initial state (initial screen) of the screen displayed on the input surface of the LCD 301, that is, the touch panel 300. As shown in the figure, in the initial state, “drawing”, “outgoing”, “incoming”, “E-MAIL”, “0” to “9”, “*”, “#” icons are displayed on the LCD 301. Is displayed.

  When the user touches the “call” icon, the CPU 100 acquires coordinate information indicating the coordinates of the position where the “call” icon is displayed. When this coordinate information is acquired, the CPU 100 detects that the “call” icon has been touched, and starts the call process.

  At this time, the destination telephone number or the like is specified by the user touching each of the icons “0” to “9”, “*”, or “#”. Also at this time, the CPU 100 acquires coordinate information indicating the coordinates of the position where the icon touched by the user is displayed. By acquiring this coordinate information, the CPU 100 detects that each of the icons “0” to “9”, “*”, or “#” is touched.

  When the user touches the “incoming” icon, the CPU 100 acquires coordinate information indicating the coordinates of the position where the “incoming” icon is displayed. When this coordinate information is acquired, the CPU 100 detects that the “incoming” icon has been touched. When the CPU 100 detects that the “incoming” icon has been touched while receiving an incoming call, the CPU 100 starts incoming processing.

  When the user touches the “E-MAIL” icon, the CPU 100 acquires coordinate information indicating the coordinates of the position where the “E-MAIL” icon is displayed. When this coordinate information is acquired, the CPU 100 detects that the “E-MAIL” icon has been touched, and starts a predetermined process related to the e-mail.

  When the user touches the “drawing” icon, the CPU 100 acquires coordinate information indicating the coordinates of the position where the “drawing” icon is displayed. When the coordinate information is acquired, the CPU 100 detects that the “drawing” icon has been touched, and changes the screen displayed on the LCD 301 from the initial state to the “character input / drawing” screen.

  FIG. 4 is a diagram showing an appearance of the mobile phone 1 in a state where the “character input / drawing” screen is displayed on the LCD 301. As shown in the figure, on the “character input / drawing” screen, an outgoing call icon 11, an incoming call icon 12, a drawing area 13, a line width selection icon 14, an eraser icon 15, and a color selection icon 16 are displayed on the LCD 301. .

  The process of the CPU 100 when the user touches the call icon 11 and the call icon 12 is the same as the process described above when the user touches the “call” icon and the “call” icon on the initial screen.

  The drawing area 13 is composed of a plurality of dots. The user sequentially moves the touch position, and inputs characters and pictures using the locus. At this time, CPU100 acquires coordinate information sequentially according to each touch position, and acquires the dot touched by the user among each dot which comprises the drawing area 13 from this coordinate information.

  The user selects the thickness of a line when drawing a character or a picture in the drawing area 13 using the line width selection icon 14. CPU100 acquires a dot from coordinate information according to the thickness of the line selected by the user.

  In the memory 101, each dot constituting the drawing area 13 and color information (information indicating which of the colors such as black, white, red, yellow, blue, and transparent) is the dot. Correspondingly stored. The user designates a color using the color selection icon 16. The CPU 100 causes the memory 101 to store the dot acquired as described above and the color designated by the color selection icon 16 when the dot is acquired in association with each other.

  Note that the user can also specify the eraser mode with the eraser icon 15. While the eraser mode is designated, the CPU 100 associates the dots acquired as described above with the transparent color and stores them in the memory 101.

  Next, details of the processing of the touch panel control unit 106 will be described. Hereinafter, a case where the touch panel 300 is an analog resistance film type and a case where the touch panel 300 is a digital type will be described.

  FIG. 6 is a diagram showing functional blocks of the touch panel control unit 106a included in the mobile phone 1a including the analog resistive film type touch panel 300a.

  As shown in the figure, the touch panel control unit 106a includes a CPU 110a, a touch operation detection unit 111a, an ADC (Analog-to-Digital Converter) 112, a data correction unit 113, a sequencer 114a, an oscillation unit 115, and a logic circuit. 116 is comprised.

  The touch panel 300a acquires a resistance value corresponding to the position on the input surface touched by the user, and outputs the acquired resistance value to the ADC 112.

  The ADC 112 converts the resistance value input from the touch panel 300 a into a digital signal and inputs the digital signal to the data correction unit 113.

  The data correction unit 113 corrects a reading error that may occur in the digital signal input from the ADC 112 by a predetermined correction process. Then, the corrected digital signal is input to the CPU 110a.

  The CPU 110a outputs the input digital signal to the CPU 100.

  The touch operation detection unit 111a monitors the input of the resistance value from the touch panel 300a, and detects that the touch operation (user instruction operation) by the user has been performed on the input surface when the input is made. When the touch operation detection unit 111a detects the touch operation, the touch operation detection information indicating that is input to the CPU 110a and the processing enable bit stored in the control register in the memory 107 is set to 0. This process enable bit is 1-bit information indicating whether or not to process the resistance value input from the touch panel 300a. The control register in the memory 107 is a register for operating the sequencer 114a.

  The sequencer 114a monitors the processing enable bit, and when the processing enable bit is 0, causes the ADC 112 and the data correction unit 113 to perform processing. On the other hand, when the processing enable bit is 1, the processing of the ADC 112 and the data correction unit 113 is stopped.

  The oscillation unit 115 oscillates a clock signal having a predetermined period. When this clock signal is input, the CPU 110a and the sequencer 114a operate in synchronization with the clock signal.

  The logic circuit 116 inputs the clock signal to the sequencer 114a when the process enable bit is 0, and does not input the clock signal to the sequencer 114a when the process enable bit is 1. Thereby, the sequencer 114a stops the processing when the processing enable bit is 1.

  The CPU 110a enables one of the modes by switching the above modes of the mobile phone 1a. Hereinafter, specific description will be made with reference to FIGS. 5 and 6.

  The CPU 110a switches the above modes by causing the LCD control unit 104 to control the LCD 20, LED 200, LCD 301, and LED 302 via the CPU 100 according to whether or not touch operation detection information is input.

  Specifically, when the normal operation mode is valid and the touch operation detection information is not input for a predetermined time or longer, the CPU 110a causes the LCD control unit 104 to turn off the LED 200 and the LED 302, thereby enabling the first low power consumption mode. To do.

  If the touch operation detection information is not input for a predetermined time or more when the first low power consumption mode is valid, the CPU 110a hides the LCD 20 and the LCD 301 in the LCD control unit 104 and activates the third low power consumption mode. And

  On the other hand, when the touch operation detection information is input in the case where the third low power consumption mode is valid, the CPU 110a causes the LCD control unit 104 to light the LED 302 and enables the second low power consumption mode.

  When the touch operation detection information is further input in the second low power consumption mode, the CPU 110a acquires coordinates indicating the position on the input surface instructed by the touch operation detected by the touch operation detection unit 111a. Then, it is determined whether or not the acquired one or more coordinates match a predetermined condition, and the operation of the LCD 20 and the LCD 301 is limited based on the determination result. That is, based on the determination result, either the normal operation mode or the third low power consumption mode is enabled.

  More specifically, the memory 107 is a pattern image indicating pattern images such as “◯”, “×”, “Δ”, “☆”, “〒”, “卍”, “#”, “open sesame”. I remember information. The CPU 110 a performs a predetermined pattern recognition process on the acquired one or more coordinates, and determines whether the one or more coordinates constitute one of the pattern images stored in the memory 107. When it is determined that one of the pattern images is to be configured, the LCD control unit 104 activates the LCD 20 and the LCD 301 and turns on the LED 200 to enable the normal operation mode. On the other hand, when it is determined that one of the pattern images is not configured, the third low power consumption mode is enabled.

  Furthermore, the CPU 110a sets the process enable bit stored in the memory 107 to 1 when the touch operation detection information is not input for a predetermined time or more. Thereby, the processing of the ADC 112 and the data correction unit 113 is stopped.

  FIG. 7 is a diagram illustrating functional blocks of the touch panel control unit 106b included in the mobile phone 1b including the digital touch panel 300b.

  As shown in the figure, the touch panel control unit 106b includes a CPU 110b, a touch operation detection unit 111b, a sequencer 114b, an oscillation unit 115, an X position register 117, a Y position register 118, a first touch state storage unit 119, and a second touch state. The storage unit 120 is included.

  The touch panel 300b acquires the coordinates of the position on the input surface touched by the user, and outputs a digital signal indicating the X coordinate to the X position register 117 and a digital signal indicating the Y coordinate to the Y position register 118, respectively. .

  The X position register 117 and the Y position register 118 are both first-in first-out storage units and store digital signals input from the touch panel 300b.

  The CPU 110b reads out digital signals stored in the X position register 117 and the Y position register 118, and outputs them to the CPU 100.

  The touch operation detection unit 111b monitors the input of a digital signal from the touch panel 300b, and detects that a touch operation (user instruction operation) by the user has been performed on the input surface when input is made. When the touch operation detection unit 111b detects a touch operation, the touch operation detection unit 111b stores touch operation detection information indicating that in the first touch state storage unit 119 and the second touch state storage unit 120.

  Both the first touch state storage unit 119 and the second touch state storage unit 120 are configured by flip-flop circuits, and store touch operation detection information input from the touch operation detection unit 111b. Note that the first touch state storage unit 119 stores the touch operation detection information until the information stored by the sequencer 114b is reset. On the other hand, the second touch state storage unit 120 stores touch operation detection information for one cycle of a clock signal described later.

  The sequencer 114b monitors the first touch state storage unit 119, and stores the digital signal in the X position register 117 and the Y position register 118 when the touch operation detection information is stored. On the other hand, when the touch operation detection information is not stored, the digital signal is not stored in the X position register 117 and the Y position register 118.

  The oscillation unit 115 oscillates a clock signal having a predetermined period. When this clock signal is input, the CPU 110b and the sequencer 114b operate in synchronization with the clock signal.

  The CPU 110b enables one of the modes by switching between the above modes of the mobile phone 1b. Hereinafter, a specific description will be given with reference to FIGS. 5 and 7.

  The CPU 110b monitors the second touch state storage unit 120 and causes the LCD control unit 104 to control the LCD 20, LED 200, LCD 301, and LED 302 via the CPU 100 according to whether touch operation detection information is stored. Switch between the above modes.

  Specifically, when the normal operation mode is valid and the state where the touch operation detection information is not stored continues for a predetermined time or longer, the CPU 110b causes the LCD control unit 104 to turn off the LED 200 and the LED 302, and the first low power consumption Enable the mode.

  When the first low power consumption mode is valid and the touch operation detection information is not stored for a predetermined time or longer, the CPU 110b hides the LCD 20 and the LCD 301 in the LCD control unit 104, and the third low power consumption mode. Enable power mode.

  On the other hand, when the touch operation detection information is stored in the case where the third low power consumption mode is valid, the CPU 110b causes the LCD control unit 104 to light the LED 302 and validates the second low power consumption mode.

  When the touch operation detection information is stored in the second low power consumption mode, the CPU 110b acquires coordinates indicating the position on the input surface instructed by the touch operation detected by the touch operation detection unit 111b. Then, it is determined whether or not the acquired one or more coordinates match a predetermined condition, and the operation of the LCD 20 and the LCD 301 is limited based on the determination result. That is, based on the determination result, either the normal operation mode or the third low power consumption mode is enabled.

  More specifically, the memory 107 is a pattern image indicating pattern images such as “◯”, “×”, “Δ”, “☆”, “〒”, “卍”, “#”, “open sesame”. I remember information. The CPU 110 b performs a predetermined pattern recognition process on the acquired one or more coordinates, and determines whether the one or more coordinates constitute one of the pattern images stored in the memory 107. When it is determined that one of the pattern images is to be configured, the LCD control unit 104 activates the LCD 20 and the LCD 301 and turns on the LED 200 to enable the normal operation mode. On the other hand, when it is determined that one of the pattern images is not configured, the third low power consumption mode is enabled.

  Furthermore, when the touch operation detection information is not stored in the second touch state storage unit 120 for a predetermined time or longer, the CPU 110b stops the processing of the sequencer 114b. When the processing is thus stopped, the sequencer 114b resets information stored in the first touch state storage unit 119.

  As described above, according to the mobile phone 1, the operation of the LCD 20 and the LCD 301 can be limited based on whether or not the coordinates meet a predetermined condition, so that the user erroneously touches the input surface. Transition to the normal operation mode is suppressed.

  Further, the CPU 110 can restrict the operations of the LCD 20 and the LCD 301 based on whether or not the coordinates constitute a pattern image.

  Further, while the user is performing a touch operation, the input surface can be illuminated by the LED 302 (second low power consumption mode). Thus, it is possible to prevent user's erroneous operation.

  The present invention is not limited to the above embodiment. For example, in the above-described embodiment, a foldable mobile phone that functions as a coordinate input device with a display function has been described. However, any device that functions as a coordinate input device with a display function, such as a PDA (Personal Digital Assistant), may be used. The present invention can be applied to any apparatus.

It is a figure which shows the external appearance of the mobile telephone which concerns on embodiment of this invention. 1 is a diagram showing a system configuration of a mobile phone according to an embodiment of the present invention. It is a figure which shows the initial state of the screen displayed on the touch screen which concerns on embodiment of this invention. It is a figure which shows the external appearance of the mobile phone in the state where the “character input / drawing” screen is displayed on the touch screen according to the embodiment of the present invention. It is a transition diagram which shows the transition between the modes of the mobile telephone which concerns on embodiment of this invention. It is a figure which shows the functional block of the touchscreen control part contained in a mobile telephone provided with the analog resistive film type touchscreen which concerns on embodiment of this invention. It is a figure which shows the functional block of the touchscreen control part contained in a mobile telephone provided with the digital type touchscreen which concerns on embodiment of this invention.

Explanation of symbols

  1, 1a, 1b Mobile phone, 10 Touch screen, 11 Outgoing icon, 12 Incoming icon, 13 Drawing area, 14 Line width selection icon, 15 Eraser icon, 16 Color selection icon, 20,301 LCD, 30 Power button, 31 Select button, 32 scroll buttons, 100, 110a, 110b CPU, 101, 105, 107 memory, 102 voice input / output unit, 103 baseband processing unit, 104 LCD control unit, 106, 106a, 106b touch panel control unit, 111a, 111b Touch operation detection unit, 112 ADC, 113 data correction unit, 114a, 114b sequencer, 115 oscillation unit, 116 logic circuit, 117 X position register, 118 Y position register, 119 first touch state storage unit, 120 second Pitch state storage unit, 200,302 LED, 300,300a, 300b touch panel.

Claims (5)

A coordinate input device with a display function, which is a coordinate input device having a display means,
User instruction operation detection means for detecting that a user instruction operation has been performed on the input surface;
Coordinate acquisition means for acquiring coordinates indicating a position on the input surface instructed by the user instruction operation detected by the user instruction operation detection means;
Determination means for determining whether or not one or more coordinates acquired by the coordinate acquisition means meet a predetermined condition;
Illumination means for illuminating the input surface;
And control means for controlling the operation of the operation and the illumination means before Symbol display means,
Only including,
The control means includes
When the third low power consumption mode that restricts the operations of both the display unit and the illumination unit is effective, the operation of the display unit is limited when a user instruction operation is detected by the user instruction operation detection unit. And enabling the second low power consumption mode for operating the illumination means,
When the second low power consumption mode is valid, when it is determined that one or more coordinates acquired by the coordinate acquisition means match the predetermined condition, both the display means and the illumination means Enable normal operation mode to operate,
A coordinate input device with a display function. In the coordinate input device with a display function according to claim 1,
Pattern image information storage means for storing pattern image information indicating a pattern image;
Further including
The determination unit determines whether or not one or a plurality of coordinates acquired by the coordinate acquisition unit constitutes a pattern image indicated by pattern image information stored in the pattern image information storage unit.
A coordinate input device with a display function. In the coordinate input device with a display function according to claim 1 or 2,
When it is determined that one or more coordinates acquired by the coordinate acquisition unit do not match the predetermined condition when the second low power consumption mode is enabled, the control unit Enable power consumption mode,
With a display function, wherein a call coordinate input device. In the coordinate input device with a display function according to any one of claims 1 to 3,
The control means restricts the operation of the display means and operates the illumination means if the user instruction operation detection means is not detected for a predetermined time or more when the normal operation mode is valid. 1 Enable low power consumption mode,
A coordinate input device with a display function. In the coordinate input device with a display function according to claim 4,
The control means enables the third low power consumption mode if the user instruction operation detection means is not detected for a predetermined time or more when the first low power consumption mode is valid,
A coordinate input device with a display function.

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