JPH01142920A - Touch keyboard - Google Patents

Abstract

PURPOSE:To return the same key code whichever defined and displayed key is pressed by assigning a key code to an optional key on a touch panel by a touch key defining means and displaying a key at the same position on a display device, and enabling keys to be handled as one key. CONSTITUTION:The touch keyboard is equipped with the touch panel, a display device, a CPU, a ROM, a RAM, etc. Then said key definition and the key display of the touch keyboard are performed by the touch key defining means which assign key codes to respective key positions on a touch panel and a touch key display means which displays the keys at positions corresponding to key positions on the display device. Further, key input is performed on this keyboard to generate a key code by a touch key input means. Here, keys are handled as one key.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a touch keyboard.

[Conventional technology]

Conventionally, touch keyboards generally generate fixed key codes for pressed key positions by key scanning.

[Problem that the invention seeks to solve]

However, in such conventional touch keyboards, there is a one-to-one correspondence between key positions and key codes, so if you want to use multiple keys as the same key, pressing the boundary between each key will cause 2! There was a problem with generating flu Uemoto code.

[Means for solving problems]

The touch keyboard of the present invention, as shown in the functional block diagram of FIG. The touch key input means C generates a key code from an input signal generated by key input on the touch keyboard on which the key definitions and keys are displayed.

(Function) To explain the function of the touch keyboard of the present invention,
Touch key definition means A to any key on the touch panel
A key code is assigned using the touch key display means B, and the key is displayed at the same position on the display device using the touch key display means B. As a result, when the user looks at the key display and performs a key input, the assigned key code is generated by the touch key input means C.

〔Example〕

The details of the touch keyboard of the present invention will be explained below based on illustrated embodiments.

2 shows an embodiment of the touch key port of the present invention, which includes a touch panel 1, a display at2, a CPU 3
, ROM 4, and RAM 5.

The CPU 3, ROM 4, and RAM 5 are microphone cucos/viewers, and input/output signals for controlling the touch panel 1.
and is configured to output signals to the display device 2. The ROM 4 stores a touch keyboard control program, and the RAM 5 stores key codes corresponding to key positions on the touch panel, and the key codes can be changed at any time.

The m3 diagram shows the relationship between the key positions on the touch panel 1 and the character display positions on the display device 2. Characters are displayed with upper, lower, a, and ta borders on the display device corresponding to each key position. By doing so, it is possible to indicate the position of the key and the meaning of the key. FIG. 3 shows an example in which two keys are used as one key.

Next, the operation of the 14'El configured in this way will be explained based on the flowchart shown in FIG.

By turning on the touch keyboard, control of the touch keyboard is started according to the program stored in the ROM 4 of the microcomputer.

That is, key codes corresponding to each key on the touch panel 1 are stored in a predetermined area of the RAM 5 (step 1). When treating multiple consecutive keys as one key, define the same key code for all these keys.

Next, display characters to indicate the meaning of the key at the position on the display device that corresponds to the key position defined in step 1 (
Step 2). At this time, the key positions can be made clear by adding upper ruled lines, lower ruled lines, and vertical ruled lines.

In this way, the edge where the touch keys are defined and the touch keys displayed enters the touch key key scan 7 (step 3).For example, on a touch panel with 12 x 8 keys, first, By activating one of the lines and reading the status of the lines H1 to Hst, it is possible to recognize which key has been pressed.

If the key is pressed, if T time (for example, 100 m5ec) has not elapsed since the previous key input, a new value T is set and the process returns to step 3.

In addition, if 10 hours have already passed since the last key input, the key code corresponding to the pressed key position is retrieved from the area set in step 1 (step 4), and stored in the buffer in RAM 5. In step 5), T is initialized (step 6), and the process returns to step 3.

By extracting the key code stored in buffer 1 (step 7), the key code for the pressed key can be obtained.

If you press the boundary between two adjacent keys, the first key scan will give you the key code for either key, but the next key scan will not work even if it is recognized that a different key was pressed than the previous key. , since almost no time has elapsed since the previous key recognition, the key code is not generated more than once.

〔Effect of the invention〕

The touch keyboard of the present invention can handle a plurality of keys as one key by using the touch key definition means and the touch key display means, and no matter which position of the key defined and displayed in this way is pressed, the same Cultivate the effect of returning a key code.

[Brief explanation of the drawing]

FIG. 1 is a block diagram for clearly showing the configuration of the touch keyboard of the present invention. FIG. 2 is a block diagram showing an embodiment of the control device in the touch keyboard of the present invention. FIG. 3 is an explanatory diagram showing the relationship between the touch panel and display device in the touch keyboard of the present invention. FIG. 4 is a flowchart showing the operation of the touch keyboard of the present invention. Above Figure 1 Figure 2

Claims (1)

[Scope of Claims] A display device, a touch panel having a plurality of input positions, touch key definition means for assigning a key code to the touch panel, touch key display means for displaying keys on the display device, and the touch panel. A touch keyboard comprising: a touch key input means for generating a key code based on an input signal from the touch keyboard.