JPH09106324A - Touch panel device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To establish a pressed key number by using less storage area while the storage area of a large volume is required for the method of allocating the key numbers to the respective coordinates of the coordinates xy and establishing the pressed key number or the like. SOLUTION: A key establishing part 11 specifies the number of a key pattern stored in a key specifying data storage part 2 from the coordinate value of the y-coordinate of a pressed key on a touch panel 6. The key establishing part 11 checks the presence/absence of the allocation of a valid key from the coordinate value of the x-coordinate of the pressed key and the specified key pattern. When the valid key is allocated, the key establishing part 11 adds an offset value stored in the key specifying data storage part 2 to the relative value of the position of the pressed x-coordinate of the specified key pattern and establishes the key number.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a touch panel device, and more particularly to reduction of a storage capacity used for determining a pressed key number.

[0002]

2. Description of the Related Art To determine the key number pressed on a touch panel device, the coordinates to which the key is assigned are calculated from the shape of each key, and the coordinates for all valid keys are compared with the pressed coordinates. A method of determining the key number when they match, a method of dividing the touch panel into predetermined blocks in advance in the above method to reduce the number of comparisons, and a key number corresponding to each dot on the touch panel and assigned coordinates There is a method to confirm the key number from.

[0003]

However, in the method of calculating the key coordinates from the shape of the key, the calculation takes time. For example, even when the key number of a square key is simply determined, it takes a lot of time because comparison has to be performed a considerable number of times for each coordinate forming the key. Especially, if the key shape is complicated, the calculation time further increases.

Further, the method of assigning a key number to each dot of coordinates xy requires a large amount of storage capacity.

The present invention has been made in order to solve the above disadvantages, and aims to reduce the storage area for determining the pressed key by arranging the touch panel into some patterns composed of x coordinates. With the goal.

[0006]

A touch panel device according to the present invention comprises a touch panel for identifying a position pressed by xy coordinates, a key identification data storage section, and a key determination section.
The key specific data storage unit is a key in which a plurality of patterns are combined into a plurality of patterns that indicate whether or not a valid key is assigned at a position on the x-coordinate of the touch panel and the relative value of the assigned valid key number based on the minimum key number on the x-coordinate. The pattern and the pattern number of the key pattern corresponding to each coordinate value of the y coordinate are stored so that it is possible to determine whether or not the valid key on the pressed coordinate is assigned.

The key specifying data storage unit stores the difference between the relative key number at the position on the x coordinate axis represented by the key pattern corresponding to the coordinate value of the y coordinate and the actual key number, and the key determining unit. Specifies the pattern number of the key pattern stored in the key specification data storage unit from the coordinate value of the y coordinate of the pressed key, and is assigned to the coordinate value of the x coordinate of the pressed key and the specified key pattern. The presence or absence of a valid key is checked, and the offset value stored in the key specific data storage section is added to the relative value of the number of the valid key at the pressed position on the x-axis of the key pattern identified as having the valid key assigned. Confirm the key number that was pressed.

Further, the key specifying data storage unit stores in advance the conversion value of each key number when converting the pressed key number, and the key confirming unit stores the pressed key coordinates and the key specifying data storage unit. Temporarily confirms the key number that was pressed based on the data, and confirms the key that was actually pressed based on the temporarily determined key number and the conversion value of each key number stored in the key specific data storage unit in advance. Even if the numbers differ, they are represented by the same pattern and the patterning is further advanced.

Further, the key specific data storage unit stores a key pattern for each of a plurality of blocks obtained by dividing the touch panel along the y-coordinate axis so that a complicated screen that is difficult to pattern can be easily patterned.

Further, the key specific data storage unit stores a key pattern common to a plurality of screens, and prevents the storage capacity required for determining the key number from increasing at the same rate as the number of screens increases.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The touch panel device of the present invention is
A touch panel for specifying the pressed position in xy coordinates, a key specification data storage unit, and a key determination unit are provided, and the touch panel is grouped into a plurality of key patterns expressed in x coordinates, which is necessary for determining the pressed key. It reduces storage space.

The touch panel is divided in the y-coordinate axis direction in units of y-coordinate axes, and the touch panel is divided into a plurality of panels (hereinafter referred to as "x-axis panels") represented by one-dimensional coordinates of only the x-axis. In each x-axis panel, for example, a position without a valid key is represented by zero, a position with a valid key is represented by an integer other than zero, and each x-axis panel determines whether or not there is a valid key at each position on the x coordinate. Represents Here, since the key numbers assigned on the x-coordinate may be different from each other, an integer other than zero is used to represent a relative value based on the minimum key number on the x-coordinate. To For example, the position to which the smallest key number is assigned is represented by "1", and the key numbers at other positions are represented by the number obtained by adding "1" to the difference from the smallest key number. This allows multiple valid keys to be represented by one type of pattern when the valid keys are regularly arranged on the touch panel, and an x-axis panel having the same pattern can be grouped into several typical patterns. You can Hereinafter, this typical pattern is referred to as a "key pattern". The touch panel device stores this key pattern in the key specific data storage unit.

Further, the key identification data storage unit stores the pattern number of the key pattern corresponding to each coordinate value of the y coordinate in the key identification data storage unit as data for indexing the key pattern. This will identify the key pattern,
The presence or absence of a valid key can be determined from the position on the x coordinate. As it is, the existence of an effective key and the relative value of the key number are known, but the pressed key number is not known, so the relative value of each key number stored in the key pattern according to the coordinate value of the y coordinate and the actual key number. The difference between and is stored in the key identification data storage unit. For example, the value of the difference between the number assigned to the smallest key number stored in the key pattern and the actual key number (hereinafter referred to as “offset value”) is stored in the key specific data storage unit.

By storing the above data in the key specifying data storage unit, the key determining unit specifies the key pattern from the coordinate value of the y coordinate of the depressed key and the pattern specifying data stored in the key specifying data storage unit, The presence or absence of a valid key assigned to the coordinate is checked from the coordinate value of the pressed key on the x coordinate and the specified key pattern. If a valid key is assigned, the number of the valid key at the position on the x axis of the key pattern is checked. The offset value stored in the key identification data storage unit can be added to the relative value to determine the number of the pressed key.

Further, the key specifying data storage section stores in advance the conversion value of each key number when converting the pressed key number into another key number, and the key determining section stores the pressed key coordinates and the key specifying data. The pressed key number is temporarily determined based on the data stored in the storage unit, and the actually pressed key is specified based on the temporarily determined key number and the conversion value of the key number stored in advance in the key identification data storage unit. By doing so, even if the difference between the assigned key numbers is different, the key numbers can be converted to actual key numbers after being provisionally fixed and can be represented by the same pattern. be able to.

Further, the key specific data storage unit stores a key pattern for each block obtained by dividing the touch panel into a plurality of blocks along the y-coordinate axis, so that the key arrangement is complicated and difficult to pattern. Also, it is possible to easily form a pattern by dividing each block.

Furthermore, when a plurality of screens are provided, a common key pattern is stored in each screen, so there is no need to store duplicate key patterns, and even if a plurality of screens are provided, the number of screens is increased. The storage capacity required for the key specific data storage unit is prevented from increasing in proportion to.

[0018]

1 is a block diagram of a touch panel device according to an embodiment of the present invention. As shown in the figure, the touch panel includes a main control unit 1, a key specific data storage unit 2, a screen storage unit 3, and R.
It has an OM 4, a RAM 5, a touch panel 6 and a display unit 7. The main control unit 1 is a unit that controls the operation of the entire touch panel device according to a program stored in the ROM 4 and the like, and includes a key determination unit 11. The key specific data storage unit 2 is xy
Whether or not a valid key is assigned at the position on the x coordinate of the touch panel 6 that represents the position pressed by coordinates and the relative value of the assigned valid key number based on the minimum key number on the x coordinate are set in a plurality of patterns. The summarized key pattern, the pattern number of each key pattern corresponding to each coordinate value of the y coordinate, the relative value of the key number at the position on the x coordinate axis represented by the key pattern corresponding to the coordinate value of the y coordinate, and the actual value. An offset value, which is a value representing the difference between key numbers, is stored. The screen storage unit 3 stores the screen displayed on the display unit 7. The touch panel 6 is a portion for key input and is provided so as to overlap the display unit 7. The display unit 7 is provided so as to overlap the touch panel 6 and displays the screen stored in the screen storage unit 3.

Before describing the operation of the touch panel device having the above configuration, the data stored in the key specifying data storage unit 2 will be described.

Consider, for example, a case where a screen as shown in FIG. 2 is displayed on the display unit 7 and a key is input from the touch panel 6. Whether or not a valid key is assigned to each coordinate on the touch panel 6 is represented by "1" and "0", as shown in FIG.
As shown in FIG. For example, when the coordinates are represented by (x, y), the key with the key number "1" is assigned to the coordinates (2, 2), so that the coordinates (2, 2) is "1" in FIG. However, since a key is not assigned to the coordinate (2,3), (2,3) becomes “0” in FIG. 3A. This is divided into y-coordinate units, and the touch panel is divided into a plurality of panels represented by one-dimensional coordinates of only the x-axis (hereinafter, this divided panel is referred to as "x-axis panel"). Here, since the key numbers assigned on the x-axis panel may be different from each other, the relative value of the assigned key numbers is represented by the portion assigned "1". For example, as shown in FIG. 3B, the position to which the smallest key number is assigned is represented by "1", and the key numbers at other positions are added to the difference between the smallest key number and "1". Express with. For example, since the key with the key number “2” is assigned to the coordinate (2, 5) and the key with the key number “3” is assigned to the coordinate (6, 5), as shown in FIG. The part corresponding to the coordinates (2, 5) is "1", and the part corresponding to the coordinates (6, 5) is "2-1" to "2". This allows
When the keys are regularly arranged, it becomes possible to represent a plurality of key assignments with one kind of divided key pattern. Therefore, as shown in FIG. 3C, the x-axis panel having the same pattern can be put together into some representative patterns. Hereinafter, this typical pattern is referred to as a "key pattern". Touch panel 6 as above
As shown in FIG. 4, the part corresponding to the screen of FIG. 2 is divided into pattern 1, pattern 2, pattern 3 and pattern 4 4 as shown in FIG.
It can be represented by one key pattern, which is stored in the key specific data storage unit 2. Here, each number in the key pattern indicates whether or not a valid key is assigned at the position corresponding to the x coordinate from the left and the relative value of the key number of the valid key.

In this state, the touch panel 6 that has been pressed
Since the key pattern cannot be calculated from the above coordinates, the pattern number of each key pattern corresponding to each coordinate value on the y coordinate axis is provided as the data for calculating the key pattern as shown in FIG. The data is stored in the data storage unit 2. This will identify the key pattern,
Whether or not there is a valid key can be determined from the position on the x-coordinate, but since the pressed key number is not known, the relative value of each key number stored in the y-axis position and key pattern as shown in FIG. An offset value representing the difference between the key numbers is stored in the key identification data storage unit. For example, the difference between the relative value assigned to the smallest key number stored in the key pattern and the actual key number is stored in the key specific data storage unit 2 as an offset value. The key determination unit 11 specifies the key pattern from the coordinate value of the y-coordinate of the pressed key and the pattern specifying data stored in the key specifying data storage unit 2, and specifies the seat cost value of the pressed key in the x-coordinate. The presence or absence of a valid key assigned to the coordinate is checked from the pattern, and if the valid key is assigned, the offset value stored in the key specific data storage unit 2 is used as the relative value of the number of the valid key at the position on the x axis of the key pattern. Is added to confirm the number of the pressed key.

The operation of the touch panel device when the above screen is displayed on the display unit 7 and a key is input from the touch panel 6 will be described with reference to the flowchart of FIG.

When the screen shown in FIG. 2 stored in the screen storage unit 3 is displayed from the display unit 7 and the operator presses the coordinates (7, 2) on the touch panel 6 while looking at the display of the display unit 7 (step S1). The touch panel 6 detects the pressed coordinates (7, 2) (step S2). The key determination unit 11 has coordinates (7, 2) at which the touch panel 6 is pressed.
When it is detected, the corresponding pattern number and offset value are acquired by referring to the data stored in the key specifying data storage unit 2 as shown in FIG. 5 based on the coordinate value of the pressed y coordinate. In this case, since the y coordinate value is "2", the pattern number is "2" and the offset value is "0". When the key confirming unit 11 acquires the pattern number and the offset value,
From the acquired key pattern of the pattern number and the coordinate value of the x coordinate, it is determined whether or not a valid key is assigned to the pressed coordinate. In this case, the key pattern is pattern 2 and the coordinate value of the x coordinate is "7", so the "8" th number from the left of pattern 2 is checked. Since the “8” th number from the left of pattern 2 is “0” (step S
4), the key confirming unit 11 determines that the effective key portion is not pressed (step S5).

On the other hand, when the operator presses the coordinate (7, 5) on the touch panel 6 and the touch panel 6 detects that the coordinate (7, 5) is pressed (steps S1 and S2). ), The key confirming unit 11 indicates that the coordinate value of the pressed y coordinate is “5” and the key specifying data storage unit 2
The pattern number "4" and the offset value "1" are acquired as the corresponding pattern number and offset value based on the data stored as shown in FIG. 5 (step S3). The key confirming unit 11 checks the number “8” from the left of the pattern 4 from the pattern 4 that is the key pattern of the acquired pattern number and the coordinate value “7” of the x coordinate. Since the “8” th number from the left of the pattern 4 is “2”, the key confirming unit 11 sets the “8” th number from the left of the pattern 4 to “2”.
And the offset value “1” are added to determine “3” as the key number, and it is determined that the key with the key number “3” has been pressed. In this way, since the touch panel 6 is divided into some key patterns and the key assignment of the pressed coordinates is specified, the key specifying data storage unit 2 stores the data for specifying the key with a small storage capacity. be able to. Moreover, since the number of times data is compared is small, it is possible to quickly identify the pressed key.

Since the difference between the assigned key numbers may not be constant as shown in FIG. 7, for example, the correspondence when converting the key numbers as shown in FIG. You may remember. The key confirming unit 11 confirms the pressed key number as described above based on the pressed key coordinates and the data such as the key pattern stored in the key specifying data storage unit 2, and the confirmed number is temporarily confirmed. The key actually pressed is specified based on the correspondence between the temporarily fixed key number and each key number stored in the key specifying data storage unit 2 in advance. For example, coordinates (7,8)
When is pressed, the key confirming unit 11 determines the pressed key from the pressed coordinates (7, 8) and the data of FIGS. 4 and 5 stored in advance in the key specifying data storage unit 2 as described above. The number is temporarily determined to be "5", the actual key number "7" is acquired from the data of FIG. 8 stored in advance in the key identification data storage unit 2 and the temporarily determined key number "5", and the key is pressed. Confirm the key number as "7". In this way, even if the differences in the assigned key numbers are different, they can be represented by the same key pattern. Therefore, the patterning can be further advanced and the storage capacity required for the key specific data storage unit 11 can be further reduced. You can

Furthermore, the touch panel 6 may be divided into a plurality of blocks along a specific y-coordinate axis, and a key pattern may be provided for each divided block so that the screen that is difficult to pattern can be easily patterned. For example, in the case of the screen as shown in FIG. 9, the screen is divided into a block A from coordinates (0,0) to coordinates (10,10) and a block B from coordinates (11,0) to coordinates (17,10). Divide into two. A key pattern or the like is created for each of the divided blocks A and B as in the above embodiment and stored in advance in the key specific data storage unit 2. In this case, since the touch panel 6 is divided into two, the key pattern is the key pattern for the block A including the pattern A1 and the pattern A2 and the pattern B1, the pattern B2, and the pattern B3 as shown in FIG.
And a key pattern for block B consisting of In the patterns A1 and A2, the value of the x coordinate is "1.
The value "B" is inserted after the portion corresponding to "1", which means that this portion is a portion to which the pattern B1, the pattern B2, and the pattern B3 which are the key patterns for the block B are applied. In addition, the key identification data storage unit 2
Stores the data for specifying the key pattern and the like as shown in FIG. 11 of the above embodiment, as shown in FIG. Here, FIG.
The data for block B is (pattern number,
Offset value, coordinate offset value). The offset value of the coordinate is the starting coordinate of the block B, and in this case, the x coordinate is “11”.

It is assumed that, for example, the coordinate (14, 5) is pressed on the screen shown in FIG. The key confirming unit 11 is y
The pattern number “2” and the offset value “2” are acquired from the coordinate value “5” and the data for the block A in FIG. 11 stored in the key specifying data storage unit 2. Next, the key confirming unit 11 reads the value of the corresponding position from the pattern A2 which is the key pattern of the pattern number "2" for the block A and the x coordinate value "14". In this case, pattern A
The fifteenth data from the left of 2 is “B”, which indicates that the pressed coordinate is the coordinate within the block B. Therefore, the key confirming unit 11 uses the key “5”, which is the value of the y coordinate, as the key. The pattern number “3” and the offset value “6” are acquired from the data for the block B of FIG. 11 stored in the specific data storage unit 2. Next, the key confirming unit 11 selects the pattern B3 and the pattern x which are the key patterns of the pattern number “3” for the block B.
The value of the corresponding position is read from the coordinate value "14". In this case, since the block B starts from “11” of the x coordinate, the “4” th (14-11 + 1) th data from the left is read. The fourth data from the left of pattern B3 is "1"
Therefore, the key confirming unit 11 selects 4 from the left of the pattern B3.
The first data is "1" and the offset value is "6"
Is added, the key number is added, and “7” is confirmed.

Further, the case where a plurality of screens are displayed according to the operation mode will be described.

For example, when the screen shown in FIG. 9 and the screen shown in FIG. 12 are switched and displayed according to the operation mode, the screen shown in FIG.
The key pattern of the screen shown in FIG. 2 is as shown in FIG.
Pattern A3 and pattern B are added to the key patterns on the screen shown in
4 will be added. Therefore, the key specifying data storage unit 2 stores the key pattern shown in FIG. 13 as a key pattern common to the screen of FIG. 9 and the screen of FIG. Further, the key specifying data storage unit 2 stores the data for specifying the key pattern and the like as shown in FIG. 14 and the data for specifying the key pattern and the like as shown in FIG. 11 similarly to FIG. 5 of the embodiment.

A case in which the screen shown in FIG. 9 and the screen shown in FIG. 12 are switched according to the mode will be described with reference to the flowchart of FIG.

The touch panel device displays the screen shown in FIG. 12 stored in the screen storage unit 3 from the display unit 7. For example, when the operator presses the coordinates (14, 2) on the touch panel 6 and detects the coordinates (14, 2) on the touch panel 6 (steps S11 and S12), the key confirming unit 11
Selects the data for specifying the key pattern according to the mode. In this case, since FIG. 12 is displayed, the key confirming unit 11 selects the data shown in FIG. 14 (step S
13). When the data shown in FIG. 14 is selected, the key confirming unit 11 obtains the corresponding pattern number and offset value based on the coordinate value of the pressed y coordinate and the data shown in FIG. 14 stored in the key specifying data storage unit 2. Yes (step S1
4). In this case, since the coordinate value of the y coordinate is “2”,
The pattern number is "2" and the offset value is "0".

The key confirming unit 11 determines whether or not a valid key is assigned to the pressed coordinate based on the acquired key pattern of the pattern number and the coordinate value of the x coordinate. In this case, since the key pattern is the pattern A2 and the coordinate value of the x coordinate is "14", the "15" th number from the left of the pattern A2 is checked. From the left of pattern A2, "1
The 5th "data is" B "(step S1
5), the key confirming unit 11 exchanges the key pattern with the key pattern for the block B (step S16), and the coordinate value “2” of the y coordinate is stored in the key specifying data storage unit 2 in the block B of FIG. No. from the data for pattern "4"
And the offset value "9" and the coordinate offset value "11" are acquired (step S17).

The key confirming unit 11 replaces the x-coordinate value with the value of ((x-coordinate value)-(coordinate offset value)) (step S18) and presses the key pattern of the acquired pattern number and the coordinate value of the x-coordinate. It is determined whether a valid key is assigned to the designated coordinates. In this case, the key pattern is pattern B4 and the coordinate value of the x coordinate is "1.
Since the coordinate value of the x coordinate is replaced with "3" which is a value obtained by subtracting "11" which is the coordinate offset value from "4", the coordinate value of the pattern B4 and the coordinate value of "3" of the x coordinate are left of the pattern B4. Check the "4" th number. Key determination unit 11
As described above, since the fourth data from the left of the pattern B4 is "1" (step S19), the offset value "9" is added and the key number is "10".
Is confirmed (step S21). In this way, by storing a common key pattern on a plurality of screens, it is possible to prevent the storage area from increasing in proportion to the number of screens when a plurality of screens are provided.

[0034]

As described above, according to the present invention, whether or not a valid key is assigned at a position on the x coordinate of a touch panel and the relative value of the assigned valid key number based on the minimum key number on the x coordinate are used. Since the key pattern in which is divided into several patterns and the pattern number of the key pattern corresponding to each coordinate value of the y coordinate are stored, it is possible to determine whether or not the effective key on the pressed coordinate is assigned.

Since the offset value which is the difference between the relative key number at the position on the x coordinate axis represented by the key pattern corresponding to the coordinate value of the y coordinate and the actual key number is stored, the pressed key The pressed key number can be determined based on the coordinates, the key pattern, and the offset value.

Further, the converted value of each key number when converting the pressed key number is stored in advance, and the pressed key number is provisionally determined based on the stored data and the pressed key coordinates, Since the actually pressed key is confirmed based on the confirmed key number and the conversion value of each key number stored in advance,
Even if the key numbers differ, they can be represented by the same key pattern, and the storage capacity required for determining the key numbers can be further reduced.

Furthermore, since the key pattern is stored for each of a plurality of blocks obtained by dividing the touch panel along the y coordinate axis, it is possible to easily pattern even a screen that is difficult to pattern.

Furthermore, when a plurality of screens are provided, a common key pattern is stored in each screen, so that it is possible to prevent the storage area required for determining the key number from increasing in proportion to the number of screens.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

FIG. 2 is a configuration diagram of a simple screen.

FIG. 3 is an explanatory diagram for obtaining a simple screen key pattern.

FIG. 4 is a configuration diagram showing a configuration of a key pattern on a simple screen.

FIG. 5 is a configuration diagram of data for determining a key pattern of a simple screen.

FIG. 6 is a flowchart showing an operation for confirming a key number on a simple screen.

FIG. 7 is a configuration diagram of a screen in which the difference in key numbers is not constant.

FIG. 8 is a configuration diagram of data for converting a key number.

FIG. 9 is a configuration diagram of a screen divided into a plurality of blocks.

FIG. 10 is a configuration diagram of a key pattern of a screen divided into a plurality of blocks.

FIG. 11 is a configuration diagram of data for determining a key pattern of a divided screen.

FIG. 12 is a configuration diagram of a screen divided into other plural blocks.

FIG. 13 is a configuration diagram of a key pattern of a screen divided into other plural blocks.

FIG. 14 is a configuration diagram of data for determining a key pattern of another divided screen.

FIG. 15 is a flowchart showing an operation when a plurality of screens are provided.

[Explanation of symbols]

 1 main control unit 11 key confirming unit 2 key specific data storage unit 3 screen storage unit 6 touch panel 7 display unit

Claims (4)

[Claims] 1. A touch panel for specifying a position pressed by xy coordinates, a key specifying data storage section, and a key confirming section, wherein the key specifying data storage section indicates whether or not an effective key is assigned at a position on the x coordinate of the touch panel. A key pattern in which a relative value based on the minimum key number on the x-coordinate of the assigned effective key number is combined into a plurality of patterns;
The pattern number of the key pattern corresponding to each coordinate value of the y coordinate and the offset value that is the difference between the relative value of the key number represented by the key pattern corresponding to the coordinate value of the y coordinate and the value of the actual key number. The key determination unit identifies the key pattern stored in the key identification data storage unit from the coordinate value of the y-coordinate of the pressed key, and depresses from the coordinate value of the x-coordinate of the pressed key and the identified key pattern. The existence of a valid key assigned to the specified coordinates is checked, and the offset stored in the key identifying data storage unit is used as the relative value of the key number at the pressed position on the x-axis of the key pattern identified as having a valid key assigned. A touch panel device characterized by adding a value to determine the number of a pressed key. 2. The key specifying data storage unit stores in advance the conversion value of each key number when converting the pressed key number, and the key confirming unit stores the pressed key coordinates and the key specifying data storage unit. The key number that is actually pressed is temporarily determined based on the data, and the key that is actually pressed is specified based on the temporarily determined key number and the conversion value of each key number stored in advance in the key specification data storage unit. The touch panel device described. 3. The touch panel device according to claim 1, wherein the key specific data storage unit stores a key pattern for each of a plurality of blocks obtained by dividing the touch panel along the y coordinate axis. 4. The touch panel device according to claim 1, wherein the key specific data storage unit stores a key pattern common to each screen when the key specific data storage unit includes a plurality of screens.