JPH01271819A - Key input control system - Google Patents

Abstract

PURPOSE:To avoid application of a repeating system for such keys requiring much time by registering the keys applying the repeating system into a table of a keyboard handler and using the repeating system only with those keys that are registered in said table. CONSTITUTION:An application program 5 gives a register instruction E to a keyboard handler 6 and a command processing part 61 registers those keys applying a repeating system into a table 63. Then a key code C is supplied to a buffer 64 in case a repeating interruption is not applied and the relevant key is registered in the table 63 despite application of a repeating interruption. When the program 5 delivers a read instruction, the part 61 takes the code C cut of the buffer 64 and sends it back to the program 5 as a status F. In such a way, the handler 6 supplies only the keys registered in the table 63 in the repeating system at a key input interruption. For the unregistered keys, it is possible to select such a key that can receive the code C of a single time only despite the repetitive pushes.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a key input control method in which input is made from a key on a keyboard and processing is controlled by a key code corresponding to the key.

[Conventional technology]

As seen in general computers, personal computers, word processors, etc., programs are often controlled by key input from a keyboard. In such cases, a repeat method is often used as a means to facilitate operation, in which a key code is generated at regular intervals by continuously pressing the same key.

Fig. 5 is a block diagram showing a key input control method using a conventional general repeat method. 3 is a counter that generates an interrupt at regular intervals; 4 is a register that transmits the key code and interrupt to an application program to be described later; 5 is an application program that executes processing. In addition, A is a key position signal emitted by keyboard 1, and B is a key position signal emitted by keyboard 1.
C is a key code outputted by the code generator 2, and D is a repeat interrupt signal outputted by the counter 3 at regular intervals.

Next, the operation will be explained. When key input is performed on the keyboard 1, the on/off signal B becomes 7 on 1 and an interrupt is generated, and the code generator 2 converts the position signal, the signal A, into a key code C. On the other hand, while this key is pressed, the on/off signal B indicates "1 on" and the counter 3 outputs the repeat interrupt signal at a constant cycle.The application program 5 receives the repeat interrupt signal as input. Read key code C through register 4 each time,
Processing is performed according to the key code. That is, if the same key on the keyboard 1 is kept pressed, the application program 5 performs the same process as if the key had been pressed several times in succession.

[Problem to be solved by the invention]

The conventional key input control method works as described above, so when a key is held down, the key input is repeated repeatedly regardless of the program control status.
For example, if you repeatedly input a key related to a relatively time-consuming process (such as a screen switching key) as an application program, the application program will continue to run even after you release the key for the number of times the key is input. , for example, there were problems that caused inconveniences, such as continuous screen switching.

This invention was made to solve the above-mentioned problems.By selecting keys that use the repeat method, it is possible to avoid using the repeat method for keys that require time-consuming processing in application programs. The purpose is to obtain a key input control method that allows

[Failure to solve the problem]

In the key input control method according to the present invention, keys that use the repeat method are registered in a table within a keyboard handler, and only the keys registered in this table are made to use the repeat method.

[Effect]

The keyboard handler in this invention allows only keys registered in the table to be repeatedly input at the time of a key input interrupt, and for keys not registered in the table, the key code is passed to the application program only once even if the key is kept pressed.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. Note that parts corresponding to those in FIG. 5 shown as the prior art are given the same reference numerals. In FIG. 1, 6 is a keyboard handler, a command processing section 61 that processes commands of the application program 5, an interrupt processing section 62 that performs key input interrupt processing, a table 63 that registers keys that use the repeat method, and a key code. It consists of a buffer 64. Also, E is a command from the application program 5 to the keyboard handler 6, and F is the key yt'-
The status from the handler 6 to the application program 5 is shown.

Next, the operation will be explained.

First, define the following as command E.

LOAI)T...Table 63 Registers keys that use the helibeat method.

READ: Read one Pakhi, key code C is returned as status F.

At the beginning, application program 5 runs LOADT
Upon issuing a command, the command processing unit 61 registers a key that uses the repeat method in the table 63.

When a key on the keyboard 1 is pressed, the code generator 2 converts the key position signal A into a key code C and sets it in the register 4, as in the conventional case. An interrupt related to a key input is transmitted to the interrupt processing section 62 via the register 4 by a key ON signal B1 followed by a repeat interrupt signal outputted by the counter 3 at a constant period.

The operation of the interrupt processing section 62 will be explained with reference to the flowchart shown in FIG.

1. First, input the key code C to register 4 (step 5T1), check whether it is due to a repeat interrupt signal (step 5T2), and check whether key code C is registered in the table 63 if it is a 'J repeat interrupt (step ST).
3). If the interrupt is not a repeat interrupt, and if it is also a repeat interrupt and is registered in the table 63, key code C is input to the buffer 64 (step ST4).
).

Next, when the application program 5 issues a READ command, the command processing unit 61 takes out the key code C from the buffer 64 and returns it to the application program 5 as status F.

In this way, the application program 5 can execute the LOADT command by itself, register and shift keys that use the repeat method in table 63, and select a key that can receive key code C only once even if it is kept pressed. .

In the above embodiment, it is determined whether or not a key is registered in the table 63 when an interrupt occurs due to a repeat interrupt signal from the counter 3. For similar problems caused by repeated recombination, as shown in Figure 3,
This problem can be solved by having the EAD instruction issue flag 65.

In this case, when the command processing unit 61 issues a READ command from the application program 5, the command processing unit 61
The D instruction issue flag 65 is set to 11 on 11.

Further, the operation of the interrupt processing section 62 follows the flowchart shown in FIG. In other words, from register 4 to key code C
(step ST5), and checks whether key code C is registered in the table 63 (step ST6).
If it is not registered, even if the interrupt is not a repeat interrupt (step 5T7), the interrupt is executed only when the READ command issue flag 65 is "on 11" (step ST8).
) Input key code C to buffer 64 (step S
T9). After that, the READ command issue 7 lag 65 is turned off (step 5TIO). In this way,
Application program 5 REA key code C
Until received with the D command, keys other than those shown in the table 63 will not be accepted, producing the same effect.

〔Effect of the invention〕

As described above, according to the present invention, keys that use the repeat method are registered in the table of the keyport node, and only the keys registered in this table are configured to use the repeat method. Since it is possible to select whether or not to use the repeat method from the application computer program, it is possible to obtain a key input control method without any lag between the operation of the application program and the input operation.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a key input control method according to one embodiment of the present invention, FIG. 2 is a flowchart showing the operation of the keyboard handler of FIG. 1, and FIG. 3 is a key input control method according to another embodiment of the present invention. FIG. 4 is a block diagram showing the input control method, FIG. 4 is a flowchart showing the operation of the keyboard handler of FIG. 3, and FIG. 5 is a block diagram showing the conventional key input control method. 1 is a keyboard, 2 is a code generator, 3 is a counter, 4 is a register, 5 is an application program,
6 is a keyboard handler, 61 is a command processing unit, 62
is an interrupt processing unit, and 63 is a table. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. Patent applicant Mitsubishi Electric Corporation Agent Patent attorney 1) Hiroshi Sawa)□i 'i
``,'', :If (Pa, 11.: (2 other people)'--11

Claims (1)

[Claims] A keyboard that allows input from any key,
The code generator includes a code generator that generates a key code for the key input from the keyboard, and a counter that generates an interrupt at regular intervals. In a key input control method that uses a repeat method to keep outputting the key code of a key and controls processing by the key code, there is a table for registering the key using the repeat method, a table for storing the key code, and a table for storing the key code. A keyboard handler having an interrupt processing unit that processes interrupts and a command processing unit that processes commands from an application program distinguishes and inputs the keys that take the repeat method and the keys that do not take the repeat method. Key input control method.