JPS63292314A - Key input processing device - Google Patents

Abstract

PURPOSE:To facilitate correction of input, by transferring an invalidating code to invalidate the code transferred to a higher-order device just before when key switches are released except one or more key switches in a state of plural key switches are operated. CONSTITUTION:If another key is operated when at least one or more keys are operated and a higher-order device 6 displays a character string corresponding to the combination of these keys on a display device 7, the code to invalidate the code transferred to the device 6 just before is transferred to erase the display on the display device 7. Next, the code corresponding to the combination of keys including another key is transferred to display a new character string on the display device 7. If input keys are correct, key input is completed by simultaneously releasing all keys to prevent the character string from being erased by the next key input. Thus, input is momently corrected without inputting a cancel key even if combination of simultaneous input keys is erroneous.

Description

[Detailed description of the invention] In recent years, in the field of industrial application, when inputting text using the keyboard of a personal computer, word processor, etc., multiple keys are pressed at the same time, and multiple character codes are assigned to each combination of the multiple keys.
Attempts have been made to input more characters with fewer keystrokes.

The present invention relates to a key manual processing device as described above.

2. Prior Art As a conventional key manual processing device, for example, Japanese Patent Application Laid-Open No. 1986-
There is one shown in Publication No. 42062.

FIG. 3 shows a block diagram of this conventional key processing device, in which 1' is a control circuit, 11' is a code generation circuit, 14 is a key code, and 2 is a plurality of key switches (hereinafter abbreviated as keys). ), 21 is a scan code of the key 2, 3 is a key press detection circuit that detects that the key 2 is pressed and outputs a key press detection signal 31, 6 is a host device, and 7 is a display device.

8 starts with the key press detection signal 31.

The first one outputs a timeout signal 81 after time t2 has elapsed.
This is a timer circuit.

In the conventional manual key processing device configured as described above, when the key 2 is pressed, the key press detection circuit 3 detects that there is a human key press and outputs the key press detection signal 31. In response to this key press detection signal 31, the second timer circuit 8 starts counting, and activates the timeout signal 81 after time t2 has elapsed. When the timeout signal 81 becomes active, the code generation circuit 11' receives the scan code 21, detects at least one key that is being pressed at that time, and generates a code determined by the key to control the code. circuit 1
’. The control circuit 1' transfers this code to the host device 6. The host device 6 displays the character string corresponding to the transferred code 14 on the display device 7.

Figure 4 is a timing diagram showing key on/off when correcting the first input mistake when entering a character string by pressing three keys at the same time. is pressed, and the second and third keys are pressed before the time t2 elapses.

After the elapse of time t2, at point B', the control circuit 1' outputs the code C3.
The host device 6 displays the character string corresponding to the code c3 on the display device 7. At this time, the operator realized that he had pressed the first key by mistake during the manual keystroke, so after releasing all the keys, he pressed the cancel key at point C'. The control circuit 1' transfers the cancellation code T at point D' and erases the character corresponding to the erroneous code C3. Next, by pressing the correct key combination after point E', the higher-level device 6 generates the correct code C at one point.
6, and the display device 7 displays the correct character string. Furthermore, if the character string corresponding to the code C3 is a plurality of characters, the cancel key was pressed multiple times.

Problems to be Solved by the Invention However, with the above configuration, if you make a mistake in the combination of keys for the simultaneous long sword, the wrong character string will be displayed, so in order to erase it, enter the cancel key etc. to erase it. The problem is that it takes a long time to correct the characters because the correct key combination must be used to input the characters again. In addition, if the operator does not completely remember the key cancellation, or even if he or she tries to press a key, he or she must erase it later using the cancellation key.

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a manual key processing device that can instantly correct a wrong combination of simultaneous entry keys without inputting a cancellation key.

Means for Solving the Problems The present invention includes a plurality of key switches, a means for transmitting a code determined by the key switch to a host device when any one of the key switches is operated, and at least one key switch. In a state where more than one key switch is being operated, a new key switch is operated, or in a state where a plurality of key switches are being operated, all but one or more of the key switches are operated. When a key switch is released, a means for transmitting an invalidation code to the host device that invalidates the code previously transmitted to the host device, and when all the key switches being operated are released at the same time. The key manual processing device is characterized by comprising means for preventing the invalidation code from being transferred.

According to the above-described structure, the present invention is configured such that when at least one key is operated and the host device displays a character string corresponding to the combination of those keys on the display device, a new key is pressed. When operated, a code is transferred to invalidate the code previously transferred to the host device, the display on the display device is erased, and then the code is transferred. A new character string is displayed on the display device by transferring the code corresponding to the key combination including the new key. If the input keys are correct, all keys are released at the same time, thereby completing the keystrokes and preventing the character string from being erased by the next keystroke.

Embodiment FIG. 1 shows a block diagram of a key manual processing device in an embodiment of the present invention. In FIG. 1, the same parts as in FIG. 3 are given the same numbers. 1 is a control circuit, 11 is a code generation circuit that generates a character string code from the scan code 21, and 12 is an invalid code generation circuit that generates an invalid code. 13 is a memory circuit that stores a flag indicating whether a single keystroke outputs the first code or the code at the time of correction; "no" outputs the first code;

1” indicates the code output at the time of correction.

A key release detection circuit 4 detects that the key 2 is released and outputs a key release detection signal 41.

6 starts by inputting the key release detection signal 41,
This is a first timer circuit that outputs a timeout signal 61 after time t1.

The operation of the key manual processing device of this embodiment configured as described above will be described below.

When one or more of the keys 2 is pressed first, the key press detection circuit 3 detects this and sends a key press detection signal 31.
is output to the code generation circuit 11. The code generation circuit 11 outputs a code corresponding to the pressed key to the control circuit 1. The control circuit 1 checks the contents of the memory circuit 13, and if it is o'', the first code is output, so the code inputted from the code generation circuit 11 is transferred to the host device 6, and the code is output from the memory circuit 13. Set the contents of 13 to 1”. The host device 6 causes the display device 7 to display a character string corresponding to the sent code.

If a new key is pressed while at least one or more keys have been pressed, the code generation circuit 11 outputs codes corresponding to the pressed keys to the control circuit 1 in the same manner as described above. . The control circuit 1 checks the contents of the memory circuit 13, and if it is ``1'', sends the code corresponding to the combination of the invalid code M generated by the invalid code generating circuit and a new key to the host device in this order. 6. The host device 6 erases the characters displayed on the display device 7 immediately before using the invalid code M, and displays another character string υ using the new code. When one key is released in the pressed state, the key release detection circuit 4 detects this and outputs the key release detection signal 41.The first timer circuit etc. detects the key release detection signal 41. When the timeout signal 61 is output, the code generation circuit 11 starts counting.
outputs the code corresponding to multiple keys being pressed in the same way as above. If this code is a code that is output when there is a key that is being pressed, it is assumed that the input has been corrected, and the code corresponding to the combination of the invalid code M and the key that is being pressed at that time is transmitted to the host device 6. . If the code outputted by the code generation circuit 11 when the timeout signal 61 is output is a code that is output when no key is pressed, all keys are assumed to be released at the same time and the code is output. is not performed, and the contents of the memory circuit 13 are reset to "no".In other words, in a state where at least one or more keys are being pressed, it is not possible to press a new key or release any key. In addition, the code transferred to the host device 6 can be corrected any number of times, and the code can be confirmed by releasing all keys at the same time.

FIG. 2 is a timing diagram showing key on/off when correcting the first input error when inputting a character string by pressing three keys at the same time in this embodiment. The first key is pressed and the control circuit 1 transfers the code C1 corresponding to this key. The host device 6
displays the character string corresponding to code C1 on the display device 7.

Next, when the second key is pressed, the invalid code and code C2 are transferred at point B, the character string corresponding to code C1 is erased, and the character string corresponding to code C2 is displayed. Third
The same applies to the key.

At this time, the operator realized that he had pressed the first key by mistake while pressing the keys manually, so he released the first key at point D. After time t1, the 2nd and 3rd keys are still pressed, so the invalid code M and code C4 are generated at 3 points.
Transfer and rewrite the string. 4th correct with 2 points
Press the key to transfer invalid code M and code C6 and rewrite the character string. Thereafter, the second key is released at point G, and the third and fourth keys are released within time 11 to release all keys, thereby confirming code C5.

As described above, according to this embodiment, input errors in character strings can be instantaneously corrected any number of times without using a cancel key or the like.

Note that in this embodiment, a code is output when a key is pressed, but by using the second timer circuit of the conventional example, the code is output when a key is pressed.
The code may be output after time t2 after the key is pressed. In addition, in this embodiment, a first timer circuit is provided, and if all keys are released within time 11, it is assumed that all keys are released at the same time, and the input character string is determined. If the keys are released with one or more keys remaining, the invalidation code may not be transferred, and the character string input so far may be confirmed when all keys are released.

As described in detail, according to the present invention, if you make a mistake in the key combination while pressing multiple keys, you can instantly correct it as many times as you like without using the cancel key etc. Since the character string changes depending on the combination of , it is possible to search for the desired character string, which has a great practical effect.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a block diagram of a manual key processing device according to an embodiment of the present invention, FIG. 2 is a timing chart of manual key processing in the same embodiment, and FIG. 3 is a conventional manual key processing device. The block diagram of FIG. 4 is a timing diagram of the key human power of the conventional example. 1...Control circuit, 11...Code generation circuit, 12...Invalid code generation circuit, 13...
...Memory circuit, 14...Key code, 2.
...Key switch, 21...Scan code, 3...Key press detection circuit, 31...
...Key press detection signal, 4...Key release detection circuit, 41...Key release detection signal, 6...
・First timer circuit %61... Timeout signal, 6... Host device, 7... Display device. Name of agent: Patent attorney Toshio Nakao and one other person
Figure 2 Figure 3

Claims (1)

[Claims] a plurality of key switches; means for transmitting a code determined by the key switch to a host device when any one of the key switches is operated; , when a new key switch is operated, or when a plurality of key switches are operated and the key switches are released leaving at least one key switch, the host device A key input processing device comprising: an invalidation code for invalidating a code transferred to the host device; and means for transferring a code determined by the key switch being operated at the time to the host device.