JPS634324A - Input device - Google Patents

Abstract

PURPOSE:To enable a host computer to obtain desired input information by selecting a coordinate position information transmission mode wherein the coordinate position of a key switch is sent and a character code transmission mode wherein a character code obtained by converting the coordinate position is sent. CONSTITUTION:When coordinates (x) and (y) are represented as a position (x, y), a character code 'A' is stored in respective addresses of a ROM 3-2 corresponding to positions (0, 0), (1, 0), (0, 1), and (1, 1) and a character code 'B' is stored in respective addresses of the ROM 3-2 corresponding to positions (2, 0), (3, 0), (2, 1), and (3, 1). Then, a driver 3 returns read coordinate information as it is unless the return of a character code is instructed when a touch key is pressed. In character return mode, a character code corresponding to coordinate values is read out of the ROM 3-2 and returned to the host computer 4.

Description

Detailed Description of the Invention (Hereinafter referred to as the margin) 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an input device such as a transparent touch panel attached to the display screen of a CR7 display device.

[Conventional technology]

Generally, the input value of a key switch on this type of touch panel was generally returned to the host computer as its coordinate value, so the CR of the position of the pressed key switch was
7 If you want to know the display (character code) of the display device,
The host computer had to convert the returned coordinate values into the character code of the pressed position. Therefore, each time the host computer executes an application program, it must convert the character code of the coordinate value information sent from the touch panel, which places a load on the host computer and takes time to execute the application program. There was a problem that it took a while.

[Problem that the invention seeks to solve]

SUMMARY OF THE INVENTION An object of the present invention is to solve these problems and provide an input device that can transmit coordinate values and character codes corresponding to the coordinate values, as required.

(Means for Solving the Problems) In order to solve the above problems, the present invention includes a display means for displaying image information, a display means provided so as not to obstruct the display of the display means, and a means for inputting coordinate information. The present invention is characterized by comprising input means for converting coordinate information into predetermined code information, conversion means for converting coordinate information into predetermined code information, and selection means for selecting and outputting either code information or coordinate information.

[Effect]

The present invention allows the host combinator to select and switch between a coordinate position information transmission mode in which the coordinate position of a key switch is transmitted and a character code transmission mode in which a character code converted from the coordinate position is transmitted by the selection means. Input information can be obtained.

(Example) Hereinafter, examples of the present invention will be described in detail and specifically with reference to the drawings.

FIG. 1 shows an example of lifting in an embodiment of the present invention.

In FIG. 1, 1 is a CRT display device that displays image information using a cathode tube, and 2 is a touch panel having a plurality of transparent touch keys 2-1 (not shown) provided on the display screen of the CRT display device. This is the key part.

3 is a driver unit that converts press information (coordinate value information) of the touch key unit 2 into character code information as necessary, and a calculation processing unit (CPtl) that executes the control procedure shown in FIG.
) 3-1 and the control procedure shown in Figure 3, and touch key 2
It has a read-only memory 3-2 that stores a character code table corresponding to -1. Note that the character code table may be stored in random access memory. In addition, the dry section 3 has a random access memory (T(A
M) has 3-3.

A host computer 4 processes information input from the touch key unit 2 and sends CRT display equipment information, and has a random access memory (RAM) 4-1 for storing display information.

FIG. 2 shows a key matrix of the touch key section 2 shown in the first diagram.

In FIG. 2, characters such as A, B, 1.2, etc. are displayed on the CRT display device 1 and are displayed to correspond to the coordinate positions of the key matrix of the touch key section 2.

The ROM 3-2 stores character codes corresponding to the coordinate values of the key matrix of the touch key section 2. For example, if the coordinate positions x and y in Fig. 2 are expressed as positions (x, y), positions (0, 0), (1, 0), (0, l
), (1,1), the character code of A'' is stored in each address of ROM 3-2 corresponding to positions (2,O), (
ROM corresponding to 3,0), (2,1), (3,1)
The character code "B" is stored in each address 3-2. The character codes corresponding to the character groups whose display arrangement is determined, such as key tops, displayed on the CRT display device in the following order are made to correspond to the positions of the key matrix and are stored in the ROM 3-
2 to each address.

When the touch key 2-1 is pressed, the driver 3 returns the read coordinate information as is unless there is an instruction from the host computer 4 to return the character code. When there is an instruction to return the character code, the character code corresponding to this coordinate information is stored in the ROM 3- of the touch panel driver section 3.
2 and returns the character code to the host computer 4.

At this time, since the size of the rectangle that generates the same character code is fixed, it is possible to read the character code specific to the coordinates. Therefore, (2,4) of °°2”,
The driver 3 generates a character code only when (3, 4), (2, 5), or (3, 5) is pressed.

FIG. 3 shows a control procedure for information switching in the driver control in the driver 3.

In FIG. 3, key switch 2-1 of touch key section 2
When the touch key 2-1 is pressed, the position coordinates x and y in the key matrix at which the touch key 2-1 was pressed are read in step S1.

In step S2, it is determined whether the transmission information mode from the host computer 4 is the character code return mode. If no, the process advances to step S4, where the coordinate X is determined.

Return y to the host computer.

In the character code return mode, the character code corresponding to the coordinate value is read from the ROM 3-2 and the character code is returned to the host computer 4 (steps 53-4).

(Effects of the Invention) As explained above, according to the present invention, input information can be selected according to the needs of the software of the host computer, and the load on the host computer can be reduced. The effect is that the processing time can be shortened.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of a circuit configuration in an embodiment of the present invention, FIG. 2 is an explanatory diagram showing an example of a key matrix of a touch key section in an embodiment of the present invention, and FIG. 3 is a control diagram in an embodiment of the present invention. It is a flowchart which shows an example of a procedure. DESCRIPTION OF SYMBOLS 1... CRT display device, 2... Touch key panel, 3... Touch panel control driver, 3-1
...cpu. 3-2...ROM. 4...Host computer. 77 Figure χ ---- 8, Explanatory diagram of De Figure 2 Flowchart of the process of passing through the process Figure 3

Claims (1)

[Scope of Claims] Display means for displaying image information; input means for inputting coordinate information, provided so as not to obstruct the display of the display means; and conversion means for converting the coordinate information into predetermined code information. An input device comprising: a selection means for selecting and outputting either the code information or the coordinate information.