JPS6235932A - Typamatic key board input control system - Google Patents

Abstract

PURPOSE:To cancel automatically a typamatic input code by generating a typamatic end code when a key is released. CONSTITUTION:When the continuous depression of a key, for example, A is detected, a typamatic code T is generated by a typamatic code generating and sending part 19 and is sent. When the key A is released, a typamatic end code P is sent from an end code generating part 20. In the processor 11 of a main body, a reception processing part 22 receives the received code successively, and a typamatic code erasing part 24 is started when the end code P is detected by a typamatic end code detecting part 23. Thus, the code erasing part 24 executes the processing to erase the unprocessed typamatic code stored in an input buffer 25 from the input buffer 25.

Description

[Detailed Description of the Invention] [Summary] In a Typamatic keyboard input control system having a Typamatic function, as a Typamatic code and a Typamatic end code.

Each code can be distinguished from other key codes■.

Code [F] is assigned, and the code ■ is sent from the keyboard input device side to the main body processing device side at predetermined time intervals during the typermatic operation, and when the key is released in the typermatic state, the typermatic end code is sent. [F]
When the one-body system processing device receives the code [F], it removes the code ■ that was previously received and stored in the one-person buffer. Prevents key codes from being entered excessively.

[Conventional technology]

Generally, in a keyboard input device, when a key is pressed, that is, when a key switch is turned on from off, a code corresponding to the key switch is input. In order to improve operability, modern keyboard input devices have a system where if the same key is held down continuously for a predetermined period of time, the corresponding code will be displayed in the same way as if the key was pressed multiple times. Increasingly, devices with a so-called typermatic function, which repeatedly sends data to the main body processing device, are being used.

In the conventional typermatic keyboard input control method, if the key 3, for example "A", is pressed continuously, the code "
A'' itself consecutively rA, A.

A, A,...'' and so on. The sent code is temporarily stored in the input buffer of the two-body system processing device, and is then read in response to a read request from the application processing unit.

Each character is extracted and processed.

[Problem that the invention seeks to solve]

There is no problem if the speed at which the main body system processing device retrieves characters from the three-person cover sofa and processes the characters is faster than the speed at which they are sent from the keyboard using Typermatic.

However, if the processing speed of the single-body processing device is slow,
Once the code has accumulated in the input buffer, the key is released, and the typermatic state is released.

A considerable number of codes will remain in the input buffer. Therefore, even after the key is released, there is a problem in that the processing of the previously manually pressed key may continue undesirably.

That is, in conventional 5, for example, when a cursor movement key is pressed continuously, the processing may not be able to keep up with the cursor movement key code sending by Typermatic due to single screen scrolling in a single body system processing device, and the operation may be delayed. There has been a problem in that even if the user releases the cursor movement key at the exact moment the cursor moves, the cursor does not stop immediately.

[Means for solving problems]

FIG. 1 is a block diagram showing the basic configuration of the present invention.

In FIG. 1, 10 is a keyboard input device.

Reference numeral 11 denotes a main processing unit that processes data using a central processing unit; 12 a key matrix consisting of a matrix of keys and switches; 13 a key press detection unit that sends a scan code to the key matrix 12 and detects key presses; 14 is the latest input key register that stores the last input key code; 15 is the main system processing unit that stores the code;
16 is a timer that notifies the time; 17 is a timer monitoring unit that monitors time related to Taipamatic; 18 is a check to see if the same key has been pressed continuously for a predetermined period of time or more. 19 is a typermatic code generation/sending unit that generates and sends a typermatic code to which a special code is assigned in advance when the same key is detected to be pressed repeatedly; 20 is the final typermatic code generation/sending unit; 22 generates and sends a special code indicating the end of the typermatic state when a key input to the keyboard input device 10 is turned off; a reception processing unit that receives data from
23 is a typermatic end code detection unit that checks whether the received code is a typermatic end code;
24 when the received code is a typermatic termination code.

a typermatic code erasing unit for removing the typermatic code in the input buffer; 25 is an input buffer;
Reference numeral 6 denotes an input character extraction unit that extracts input characters from the input buffer 25 in response to a read request.

27 is a typamatic code conversion unit that converts the code taken out from the input buffer 25 into the latest input character when it is a typamatic code; 28 is a typamatic code conversion unit that processes data by inputting characters from the keyboard input device 10; represents the application processing unit that performs the processing.

Conventional 1 For example, if the rAJ key is pressed continuously,
The code "A" itself is successively transmitted by the typermatic as rA, A, A, A, . . . . In the case of the present invention, special codes such as a typermatic code ■ and a typermatic end code O are assigned in advance, and when it is detected that the key 1, for example rAJ, is pressed continuously, the typermatic code Matic
The code generating and transmitting section 19 generates and transmits a typermatic code (2). Then, when the "A" key is turned off, the Taipamatic end code [F] is
It is generated and sent by the typermatic end code generation and sending unit 20. That is, [A, ■.

■, ■, ..., 0'', two-body system processing device 1
A code is sent for 1.

In the main body processing device 11, the reception processing unit 22 sequentially stores the received codes in the input buffer 25, but when the tiermatic end code detection unit 23 detects the tiermatic end code [F].

The typermatic code erasing unit 24 is activated.

The typermatic code erasing unit 24 inputs the input buffer 2
Unprocessed Typamatic code stored in 5 ■
is removed from the input buffer 25.

[Effect]

According to the present invention, even if a large number of pieces of key information related to the same key are stored consecutively in the seven-person sofa 25 due to the tiermatic, when the tiermatic state is canceled, the unprocessed information related to the tiermatic Only the cords of are selectively removed from the one-person hippopotamus sofa 25. Therefore, the code related to Typermatic that was entered manually before the operator released the key is not transmitted to the application processing unit 28 after the operator releases the key, and the application processing unit receives the newly input code from the primary processing unit 28. It will immediately move on to key processing.

〔Example〕

FIG. 2 is a diagram for explaining buffer management by the reception processing section, and FIG. 3 is an example of a keystroke detection circuit.

FIG. 4 is a flowchart of one embodiment regarding keyboard input control, FIG. 5 is a flowchart of processing of one embodiment of the reception processing section, and FIG. 6 is a flowchart of one embodiment of processing of the input character extraction section.

As shown in Fig. 2, when key 3, for example, key Ki, is pressed, the signal from this key switch (number 3 turns from off to on,
The rKiJ code is sent from the code sending unit 15.

This code is stored in the input buffer 25, and the code stored in the input buffer 25 is F I F O (
First In First 0ut), the character is extracted by the manual character extraction unit 26.

Therefore, the input buffer 25 includes a read pointer 30 for reading and a storage pointer 31 for storing.
are provided, and the input buffer 25 is used cyclically.

Upon receiving the code, the reception processing unit 22 sets the code at the position pointed to by the storage pointer 31, and
Move 1 forward by one. In response to a read request from the application processing unit, the input character extraction unit 26 retrieves the read pointer 30.
The code for one character is extracted from the position , and the read pointer 30 is advanced by one. When the read pointer 30 and the storage pointer 31 match, the input buffer 25 is empty.

If, for example, 300 is has elapsed since the key KL was turned on and this key Ki is still on, the typermatic state is entered. As a result, the typermatic code ■ is sent out at intervals of 25 m5 and stored in the input buffer 25 in sequence. When the key Ki changes from on to off, the tiermatic state is canceled and the tiermatic exit code [F
] is sent.

As a result, the storage pointer 31 is updated and the typermatic code ■ is removed from the input buffer 25.

Detection of key presses is performed by a circuit such as that shown in FIG. 3, for example. In FIG. 3, 33 is a scan code register, 34 is a key memory, 35 and 36 are gates,
37 is an exclusive OR circuit.

38 represents an AND circuit.

The scan code register 33 contains the key matrix 1.
A 7-bit scan code for supplying signals to two rows and columns is sequentially set. If the key corresponding to that scan code is on.

An on signal is output from the key matrix 12.

The key memory 34 is a memory for storing previous scan result information, and has a capacity of 128 bits corresponding to the scan code. When a change in the key is detected by the exclusive OR circuit 37, the contents of the 1-key memory 34 are updated. If the contents of the key memory 34 are off and the output of the key matrix 12 is on, a keystroke detection signal is output,
The contents of the scan code register 33 are set to the latest input key register 14. Of course, the present invention is not limited to the use of this circuit, and key changes may be determined by a microprocessor.

The control flow in the keyboard input device 10 is as follows.

As shown in FIG. The following processing numbers ■ to ■ correspond to the processing numbers shown in FIG.

(2) The key press detection unit 13 sequentially sets scan codes from 9, for example, 0 to 127, in the scan code register 33 shown in FIG. 3, and detects whether or not a key is pressed.

(2) When a key press is detected, a key code corresponding to the scan code is set in the latest input key register 14 and sent to the two-body system processing device 11 side.

(1) Then, a timer of, for example, 300 ma is started, control is returned to process (2), and detection of new key presses is continued in the same manner.

■ If there is no new keystroke, check whether a timeout has occurred for the previously started timer. If the timeout has not expired, control is returned to the process.

■ If a timeout is detected, check whether the last key pressed is turned on. Immediately,
The contents of the latest input key register 14 are sent as a scan code to the key matrix 12, and it is checked whether the output is on. If it is on, process ■ Execute the following 5
If it is off, process ■ Execute the following.

■ Generate and send out a typermatic code ■.

■ Specify 251118 as the timer value, restart the timer, and return control to process ■.

■ Generate and send a typermatic end code [F] indicating the end of typermatic.

■ Clear the timer and return control to process ■.

The reception processing section 22 shown in FIG. 1 executes two processes, for example, as shown in FIG. 5. The following processing numbers ■ to ■ correspond to the processing numbers shown in FIG.

(2) Receive a code from the keyboard input device 10 by, for example, an interrupt.

(2) Determine whether the received code is a typermatic end code [F].

■ If the typamatic exit code is not [F].

The received code is stored in the input buffer 25.

■ Add 1 to the storage pointer and return control to process ■.

■ When the reception code is Taipamatic end code 0,
Subtract 1 from the storage pointer.

■ Determine whether the code pointed to by the updated storage pointer is a typermatic code ■. If it is not the typermatic code ■, control is transferred to process ■. If it is a typermatic code, control is returned to process ■. The typermatic code is cleared from input buffer 25 by subtracting the storage pointer. In addition, in detail, 9 determination processing is performed so that the storage pointer does not become smaller than the read pointer.

The input character extracting unit 26 shown in FIG. 1 executes processing as shown in FIG. 6, for example. Processing numbers ■ to ■ below correspond to the processing numbers shown in FIG.

(2) In response to a read request from the application processing unit 28, the code is taken out from the input buffer 25 according to the read pointer.

■ Determine whether the extracted code is a typermatic code ■.

■ If it is not a Typamatic code, convert the key code to a character code as necessary.

Store it as the latest character.

■ Add 1 to the read pointer and execute the application processing unit 28-
- Notify input characters.

■ If the key code is the typermatic code ■, the latest character stored in process ■ is taken out as the input character, and control is transferred to process ■.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to distinguish between codes input by Typamatic and codes input by normal keystrokes, and when a key is released, Typamatic is automatically activated. Since the manually entered code is canceled, it is possible to prevent the same key code from being inputted excessively.

[Brief explanation of drawings]

Fig. 1 is a basic configuration diagram of the present invention, Fig. 2 is a diagram for explaining the sofa management by the reception processing section, Fig. 3 is an example of a keystroke detection circuit, and Fig. 4 is an example of keyboard input control. Flowchart FIG. 5 is a flowchart of one embodiment of processing of the reception processing section. FIG. 6 shows a processing flowchart of one embodiment of the input character extraction section. In the figure, 10 is a keyboard input device, 11 is a main body processing device, 18 is a tiermatic status check section, and 19 is a tiermatic code generation/sending section. 20 is a typermatic end code generation/sending section, 22 is a reception processing section, 24 is a typermatic code erasing section, 25
2 represents an input buffer, and 26 represents an input character extraction unit.

Claims (1)

[Claims] A typermatic keyboard input control having a typermatic function that sends a code related to a key to a main body processing device at a predetermined time interval when the same key is continuously pressed for a predetermined time or more. In this method, a typermatic code generation/sending unit (19) generates and transmits a typermatic code to which a special code distinguished from a general key code is pre-assigned when a continuous press state of the same key is detected. ), and a typermatic end code generation/sending unit (20 ), and a tiermatic code erasing unit on the main body processing device (11) side, which removes the tiermatic code previously received and stored in the input buffer (25) when the tiermatic end code is received. (24) A typermatic keyboard input control method characterized by comprising: