JPH09231005A - Liquid crystal touch panel device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To match a cursor to a half size character even when the number of touch matrixes corresponds to full size characters by realizing processing by the touch of one time for the full size characters, by the touch of one time when it is the character on the left side of the matrix and by the touch of two times when it is the character on the right side for the half size characters. SOLUTION: When a touch panel is touched, which matrix of the touch panel is touched is detected and whether or not the character is present in the corresponding matrix of a liquid crystal display corresponding to the matrix is judged. When the character is present and the character is the full size character (A), the cursor is matched to the character. On the other hand, when it is the half size character (B), whether or not it is the same matrix as the matrix touched in a previous time is judged. Then, when it is not the same matrix, the cursor is matched to the half size character of the left half of a touched matrix part. When it is the same matrix, the cursor is matched to the half size character on the side different from the previous time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal touch panel device, and more particularly, to a liquid crystal touch panel device having a function of handling characters having a size equal to or less than full-width characters (half-width characters, quarter-width characters).

[0002]

2. Description of the Related Art In a conventional liquid crystal touch panel device, when trying to place a cursor on a desired character, FIG.
As shown in (2), a touch matrix for each character is provided on a touch panel, and a touched location is recognized by a control circuit (CPU).

[0003]

In the conventional liquid crystal touch panel device described above, for example, two half-width characters are displayed in the width of a full-width character, and when it is desired to place a cursor on the half-width character, as shown in FIG. All the matrices must be finely divided to half-width character units, which requires twice as many touch matrices as compared to the case of only full-width characters. If it also has a function of inputting a quarter-width character, the touch matrix requires several times, and the circuit configuration is inevitably complicated.

An object of the present invention, as shown in FIG. 5, is to provide a liquid crystal touch panel device which can place a cursor on half-width characters and quarter-width characters even if the number of touch matrices corresponds to the number of full-width characters. .

[0005]

According to the liquid crystal touch panel device of the present invention, when a touch matrix of a touch panel is set to a full-width character unit and a matrix displaying half-width characters is touched, a full-width width is set in a first touch. A means is provided for positioning the cursor on one of the two characters in the matrix and touching the same matrix again to move the cursor to the other character.

Further, the liquid crystal touch panel device of the present invention comprises:
When the unit of the touch matrix of the touch panel is a full-width character unit and a matrix displaying a quarter-width character is touched, the first touch moves the cursor to one of the four characters in the full-width matrix. And means for sequentially moving the cursor to any other character according to the number of times the same matrix is touched again.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a liquid crystal touch panel device according to an embodiment of the present invention.
U) It is configured with 1 as a core. Touch panel 2 is C
The touch panel 2 is connected to the PU 1 and outputs the coordinate information of the touched matrix to the CPU 1.
A ROM 5 is connected to the CPU 1 and stores data of various characters to be displayed on the liquid crystal display 4 and programs necessary for displaying characters and controlling each component circuit. Also, a RAM 4 is connected to the CPU 1 and R
The AM 4 is used as a buffer for temporarily storing various data read from the ROM 5 and expanding data to be displayed on the liquid crystal display 3, and for storing data such as a cursor position currently being displayed. The liquid crystal display 3 connected to the CPU 1 displays the display data output from the CPU 1 and stored in the display buffer of the RAM 4. In addition,
As shown in FIG. 2, the touch panel 2 is arranged so as to overlap the liquid crystal display 3. By touching an arbitrary matrix on the touch panel 2, the same matrix on the liquid crystal display 3 is shown.

Next, the operation of the liquid crystal touch panel device configured as described above will be described with reference to the flowchart shown in FIG. This operation is performed mainly by the CPU 1. In step S1, characters are displayed in advance, the cursor is located at an arbitrary position, and the position of the cursor is stored in the RAM 4 to start the operation. S2
It is determined whether or not the touch panel 2 has been touched. If there is no touch (S2: NO), the process waits until there is a touch. If there is a touch (S2: YES), S
At 3, it is detected which matrix of the touch panel 2 has been touched, and at S4, it is determined whether or not there is a character in the corresponding matrix of the liquid crystal display 3 corresponding to that matrix.

If there is no character (S4: NO), S5
Then, a full-width cursor is displayed on the matrix of the liquid crystal display 3 corresponding to the matrix touched in S6. If there is a character (S4: YES), it is determined in S5 whether the character is a full-width character. If the character is a full-width character (S5: YES), the cursor is moved to the character in S6. On the other hand, if it is not a full-width character (S5: NO), that is, if it is a half-width character, it is determined in S7 whether the matrix is the same as the matrix touched last time.

If the matrices are not the same (S
7: NO), the cursor is moved to the half-width character in the left half of the matrix portion touched in S8. On the other hand, if the matrix is the same (S7: YES), that is, if the same matrix is continuously touched, the cursor is moved to the half-width character on the side different from the previous one in S9. S6, S
After displaying the cursor in any one of steps S8 and S9, information on the cursor position is stored in the RAM 4 in step S10. Continue, S
At 11, input of characters, termination of processing, and other various processing are performed, but the description of the method and the like is omitted here. Then, if necessary, the process returns to S2 to continue the process.

Next, the operation on the screen based on the screen of the liquid crystal display 3 shown in FIG. 4 will be described. FIG. 4 shows a part of the liquid crystal display 3, in which two matrices A and B are shown. A displays a full-width character “A”, a half-width character “A” in the left half of B, and a half-width character “U” in the right half. In FIG. 4A, the cursor is not yet located at this part, but is located somewhere else. In this state, when A is touched, the cursor is positioned at "A" as shown in FIG. Touching B in (b) moves the cursor to "A" as shown in (c). In (c), when B is touched, that is, when the same matrix is continuously touched, the cursor moves to “U” in the right half of B as shown in (d).

As described above, the cursor can be aligned with the character displayed on the liquid crystal display by a single touch for a full-width character, and a single touch for a half-width character on the left side of the matrix. The right character is realized with two touches. According to this operation method, when a half-width character is included, the number of touch matrices is only half of the conventional one, and the cursor can be adjusted to full-width and half-width characters while simplifying the circuit configuration.

The present invention is not limited to the above embodiment, but can be modified and improved without departing from the gist of the present invention. For example, the cursor can be adjusted not only by half-width characters but also by quarter-width characters by the same operation.

[0015]

As described above, according to the present invention, when a plurality of half-width or quarter-width characters are displayed in full-width characters and a cursor is to be positioned on any one of the characters, the touch matrix is changed to half-width characters. Alternatively, only the same number of touch matrices as in the case of full-width characters are required without reducing the size to a quarter-width character unit, so that the circuit configuration is simplified and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a block diagram of a liquid crystal touch panel device according to an embodiment of the present invention.

FIG. 2 shows a layout relationship between a touch panel and a liquid crystal display in FIG.

FIG. 3 is a flowchart of cursor movement.

FIG. 4 is a view for explaining an operation of positioning a cursor on a character on a liquid crystal display.

FIG. 5 shows an example of a touch matrix in the present invention.

FIG. 6 is a diagram illustrating a touch matrix of a conventional liquid crystal touch panel device.

FIG. 7 is a diagram illustrating a touch matrix of a conventional liquid crystal touch panel device.

[Explanation of symbols]

 Reference Signs List 1 control circuit (CPU) 2 touch panel 3 liquid crystal display 4 RAM 5 ROM

Claims (2)

[Claims] When the touch matrix of a touch panel is a full-width character unit and a matrix displaying half-width characters is touched, one touch of one of two characters in a full-width matrix is performed in a first touch. A liquid crystal touch panel device, comprising: means for setting a cursor to a character and touching the same matrix again to set the cursor to another character. 2. When a touch matrix of a touch panel is set to a full-width character unit and a matrix displaying a quarter-width character is touched, the first touch is one of four characters in a full-width matrix. A liquid crystal touch panel device comprising means for positioning a cursor on a character and sequentially positioning the cursor on any one of the other characters according to the number of times the same matrix is touched again.