JPH03186919A - Keyboard control system - Google Patents

Abstract

PURPOSE:To generate a easy-to-use man-machine interface by checking the empty/full of a queue buffer concerned and storing/abolishing information when typamatic information being key input information is stored in the queue buffer. CONSTITUTION:CPU 1 refers to typamatic information and a buffer empty flag 4 as to key input information inputted from a keyboard 2. When it decides that the queue buffer 3 is not empty, it abolishes information. Then, typamatic information at a time except for said case, make information/break information are stored in the queue buffer 3. Then, a processing program takes out key input information from the queue buffer 3 in order of old key input information. Thus, the easy-to-use man-machine interface can be generated by checking the empty/full of the queue buffer 3 and storing/abolishing information when typamatic information is stored in the queue buffer 3.

Description

[Detailed Description of the Invention] [Summary] Regarding a keyboard control method that imports typermatic information from a keyboard, when storing typermatic information, which is key input information, in a queue buffer, the queue buffer is checked to see if it is empty or full. The aim is to create an easy-to-use man-machine interface by eliminating the discrepancy between the key input that the user is aware of and the actual processing, and by storing and discarding the information input from the keyboard. It is equipped with a queue buffer that temporarily stores key input information and from which the processing program retrieves the stored key input information in order from the oldest one, and a buffer empty flag that indicates the empty space of this queue buffer. If the input key input information is typermatic information and the queue buffer is not empty by referring to the buffer empty flag above, the typermatic information is discarded, and the typermatic information and make information/break information at other times are They are stored in a queue buffer, and the processing program takes them out from the queue buffer in the order of oldest to lowest.

[Industrial application field]

The present invention relates to a keyboard control method for capturing typermatic information from a keyboard. In general, information that a keyboard notifies the CPU to which it is connected includes information that a certain key is pressed (make information, make information)/released (break information, brake information@), and also information that a certain key is Information that it continues to be pressed (typermatic information, typer□a
tic information). Of these, it is desired that the typermatic information be easily used by the user and be captured without missing any key input information.

[Problems to be solved by the prior art and the invention] Conventional keyboard control requires all input data to be input from the keyboard.
Temporarily store it in an IFO format queue buffer. and,
A program that uses input data from the keyboard extracts data one by one from the beginning of this queue buffer and processes it. Therefore, even if the input from the keyboard temporarily exceeds the processing speed of the program that uses it, the excess input data is stored in the queue buffer, making it possible to process the input data without missing it. It becomes possible.

However, at this time, the input data of the typermatic information is also input to the queue buffer, so there is a problem that the operation may differ from the original operation that the user is aware of. For example, if a writing program such as a word processor uses Typermatic information, when the user attempts to move the cursor displayed on the display to the desired position by holding down a cursor movement key, the Typermatic information If information stays in Cuba 7F, even if you stop pressing the cursor movement key, the cursor will move an additional amount by the amount that stays in the queue buffer, making it difficult to use unlike the user's intention. turn into. If you reduce the number of queue buffer stages to prevent such extra cursor movement,
If the processing speed of the program is slower than the key input, there is a problem that the key input may be missed.

In the present invention, when storing typermatic information, which is key input information, in a queue buffer,
The purpose is to create an easy-to-use man-machine interface that eliminates the discrepancy between the user's conscious key input and the actual processing and the omission of key input information by checking the content and storing/discarding it. .

[Means to solve problems]

FIG. 1 shows a basic configuration diagram of the present invention.

In FIG. 1, the CPUI is for taking in key input information from the keyboard 2.

The queue buffer 3 is a buffer that temporarily stores key input information input from the keyboard 2 and from which a processing program retrieves the stored key input information in order from the oldest one.

The buffer empty flag 4 is a flag indicating that the queue buffer 3 is empty.

[Effect]

As shown in FIG. 1, in the present invention, when the CPU determines that the queue buffer 3 is not empty by referring to the tiermatic information and the buffer empty flag 4 regarding the key input information input from the keyboard 2, the tiermatic The information is discarded, and the typermatic information and make information/break information at other times are stored in the queue buffer 3, and the processing program retrieves the key input information from the queue buffer 3 in the order of oldest key input information.

Therefore, by checking whether the queue buffer 3 is empty or full when storing typermatic information in the queue buffer 3 and storing/discarding it, it is possible to eliminate the discrepancy between the key input that the user is aware of and the actual processing. It is possible to create an easy-to-use man-machine interface without missing any information.

〔Example〕

Next, the configuration and operation of one embodiment of the present invention will be explained in detail using FIGS. 2 and 3.

In FIG. 2, the CPU performs processing based on an application program 5 and a keyboard control program 6. In FIG.

The application program 5 is an application program that sequentially retrieves the oldest key input information from the queue buffer 3 and performs corresponding processing.

The keyboard control program 6 is called by an interrupt from the keyboard 2, takes in key input information, and stores it in the queue buffer 3 according to the flowchart in FIG. 3, which will be described later.
The key input information is stored in the key input information, or the key input information is discarded.

The queue buffer 3 is a FIFO type buffer,
This is a buffer from which key input information stored first is retrieved in order.

Next, the operation of the configuration shown in FIG. 2 will be explained in detail using the flowchart shown in FIG.

In FIG. 3, ■ determines whether the information is typermatic information or not. This is notified to the CPUI by an interrupt from the keyboard 2 in FIG. 2, and the keyboard control program 6 called from the CPUI uses typermatic information (
It is determined whether the key input information indicates that a key has been pressed continuously. If YES (Taipamatic information)
, do @. In the case of No (in the case of makeup information/break information), press ■ to enter the makeup information I! /Stores break information in queue buffer 3.

(2) determines whether the buffer empty flag 4 is 0FF (-the queue buffer 3 is empty). If YES (if the queue buffer 3 is empty), the typermatic information is stored in the queue buffer 3 in step (3). On the other hand, if No (if the queue buffer 3 is not empty), the relevant typermatic information is discarded. By not storing typermatic information in the queue buffer 3 when key input information is accumulated in the queue buffer 3 in this way,
This eliminates the discrepancy between key inputs that the user is aware of and actual processing due to typermatic information remaining in the queue buffer 3, and also prevents key input information (make information/break information) from being processed when the queue buffer 3 is full. No more spills.

〔Effect of the invention〕

As explained above, according to the present invention, when storing tiermatic information in the queue buffer 3, the configuration is adopted in which the empty/full state of the queue buffer 3 is checked and stored/discarded. It is possible to eliminate the discrepancy between the key input that the user is conscious of and the actual processing, and it is also possible to eliminate the omission of key input information. This makes it possible to create an easy-to-use man-machine interface for the keyboard 2.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the principle configuration of the present invention, FIG. 2 is a diagram showing the configuration of an embodiment of the present invention, and FIG. 3 is a flowchart explaining the operation of the present invention. In the figure, l represents a CPU, 2 a keyboard, 3 a queue buffer (FIFO type), 4 a buffer empty flag, 5 an application program, and 6 a keyboard control program.

Claims (1)

[Claims] In a keyboard control method that takes in typermatic information from a keyboard, key input information input from the keyboard (2) is temporarily stored, and the stored key input information is processed by a processing program. It is equipped with a queue buffer (3) that is retrieved in order from the oldest one, and a buffer empty flag (4) that indicates the empty space of this queue buffer (3). Empty flag (4)
When the queue buffer (3) is not empty, the relevant typermatic information is discarded, and the typermatic information and make information/break information at other times are stored in the queue buffer (3), and the processing program A keyboard control method characterized in that data is retrieved from the queue buffer (3) in the order of oldest.