JPS63292315A - Key input processing device - Google Patents

Abstract

PURPOSE:To facilitate correction of input by transferring a code determined with operated key switches to a higher-order device and settling the code transferred to the higher-order device just before at the time of simultaneously releasing all operated key switches. 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 combination of these keys on a display device 7, the code corresponding to combination of keys including another key is transferred, and the code transferred to the device 6 just before is invalidated to erase the display on the display device 7, and a new character string is displayed on the display device 7. If input keys are correct, the settling code is transferred to the device 6 by simultaneously releasing all keys to settle the code transferred to the device 6 just before, and the character string is prevented 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] Industrial Application Fields In recent years, when inputting text using a keyboard such as a personal combinator or word processor, multiple keys are pressed simultaneously and a multiple character code is 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 key 2, %3 is a key press detection circuit that detects that the key 2 has been pressed and outputs a key press detection signal 31, 64 is a host device, 7 is a display device, and 8 is a press of the key. This is a first timer circuit that starts with the detection signal 31 and outputs a timeout signal 81 after time t2 has elapsed.

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 by the time the time t2 has passed, the second . The third key is pressed, and after time t2 has elapsed, the control circuit 1' outputs the code C3 at point B', and 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 X', the host device 6 outputs the correct code C6 at 12 points, 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, in the configuration described above, if the wrong combination of keys is entered simultaneously, the wrong character string will be displayed. 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. Furthermore, even if the operator does not completely remember the key combinations or tries to press the keys, he or she must later erase them using the cancel 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 keys without inputting a cancellation key.

Means for Solving the Problems The present invention includes 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, and at least one key switch. When the key switch is being operated, a new key switch is operated, or when a plurality of key switches are being operated, all but one key switch is pressed. means for transmitting the code determined by the key switch being operated at that time to the host device when the key switch is released; The key manual processing device is characterized in that it includes means for determining the code transferred to the host device.

Effect of the present invention With the above-described configuration, when at least one or more keys have been operated and the host device is displaying a character string corresponding to the combination of those keys on the display device, a new key is operated. If done.

Transfer the code corresponding to the key combination including the new key, invalidate the code previously transferred to the host device, erase the display on the display device, and display a new character string on the display device. do. If the input keys are correct, all keys are released at the same time to transfer the confirmation code to the host device, confirm the code that was transferred to the host device immediately before, and then enter the next key manually. Prevent it from being deleted.

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, 12 is a confirmation code generation circuit that generates a confirmation code X, and 4 is a key release detection circuit, which detects when key 2 is released. is detected and a key release detection signal 41 is output. Reference numeral 6 denotes a first timer circuit which starts by inputting the key release detection signal 41 and 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 transfers the code input from the code generation circuit 11 to the host device e.

The host device 6 causes the display device 7 to display a character string corresponding to the sent code. At least one +-
75; If a new key is pressed while it is already pressed,
The code generation circuit 11 outputs codes corresponding to the plurality of pressed keys to the control circuit 1 in the same manner as described above. The control circuit 1 transfers this code to the host device 6 as a code corresponding to the new key combination. The host device 6 erases the characters displayed on the display device 7 immediately before, and displays another character string using a new code.

Further, when one key is released while a plurality of keys are being pressed down, the key release detection circuit 4 detects this and outputs a key release detection signal 41. First timer circuit 6
receives the key release detection signal 41 and starts counting. When the timeout signal 61 is output, the code generation circuit 11 outputs codes corresponding to the plurality of pressed keys in the same manner as described above. If this code is the code that is output when there is a key that is pressed,
It is assumed that the input has been corrected, and the code corresponding to the key combination being pressed at that time is transferred to the host device 6. If the code output by the code generation circuit 11 when the timeout signal 61 is output is a code that is output when no key is pressed, it is assumed that all keys are released at the same time, and a confirmed code is generated. A confirmation code K is inputted from the generation circuit 12 and transferred to the host device 6 to confirm the code transferred immediately before. i.e. at least 1
If more than one key is pressed, the code transferred to the host device 6 can be corrected any number of times by pressing a new key or releasing any key. The extraction code can be confirmed by releasing the keys at the same time.

FIG. 2 is a timing diagram showing key on/off when correcting the first input error when three keys are pressed simultaneously to input a character string in this embodiment. 1 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, code C2 is transferred at point B, the character string corresponding to code C1 is erased, and the character string corresponding to code C2 is displayed.

The same applies to the third key. At this time, the operator realized that he had pressed the first key by mistake while pressing the key manually, so he released the first key at the 9th point. time t
After 1 there is 2nd. Since the third key is still pressed, code C4 is transferred at point E and the character string is rewritten. Press the correct fourth key at one point to transfer code C5 and rewrite the character string. Then, at point G, the second key is released, and within time 11, the third key is released. By releasing the fourth key and releasing all the keys, the confirmation code K is transferred and the code C6 is confirmed.

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 when 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 all but one or more keys are released, the 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 , you can search for the desired character string, and this is actually very effective.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a key manual processing device according to an embodiment of the present invention, FIG. 2 is a timing chart of key manual processing of the same embodiment, FIG. 3 is a block diagram of a conventional key processing device, and FIG. 4 is a timing diagram of key human power in the conventional example. 1...Control circuit, 11...Code generation circuit, 12...Determined code generation circuit, 14...
...Key code, 2...Key switch, 2
1...Scan code, 3...Key press detection circuit, 4...Key release detection circuit, 41.
...Key release detection signal, 6...First timer circuit, 61...Timeout signal, 6.
...Upper device, 7...Display device. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure m2 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 key switch is not operated at that point. means for transmitting a code determined by the key switch being operated to the host device; and means for determining the code that was most recently transmitted to the host device when all the key switches being operated are released at the same time. A key input processing device comprising: