JPS60181812A - Keyboard controller - Google Patents

Abstract

PURPOSE:To obtain a keyboard controller which can give an optimum interface to a system and an operator respectively by setting programmably the repeating speed for each key. CONSTITUTION:A processor unit 5 sets previously the repeating cycle value of a cursor key to a repeating cycle setting register 33 as a repeating cycle. The contents of the register 33 are loaded as the initial value of a repeat counter 34 after it is confirmed by a repeat key discriminating logic 32 that the pushed key is equal to the repeat key. Then the count-down operation of the counter 34 is started with the output of a timer 2. A code output logic 35 is started when the contents of the counter 34 is set at ''0''. In this case, if the cursor key is pushed continuously, the logic 35 produces a repeat code by the output of the logic 32 and delivers it to the unit 5.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a key date control device that makes the repeat speed for each key variable.

[Technical background of the invention and its problems]

Conventionally, the repeat speed of keys that involve repeat operations, such as cursor keys, has been fixed, and all repeat keys have the same repeat speed. By the way, it is well known that, for example, on a one-line display LCD, the processing speed within the system differs between a roll-up or down operation and a left/right cursor movement operation. However, even though these processing speeds are different, the repeat speed is the same in both cases, so when the faster one is combined, the system processing cannot keep up, resulting in key human input information being discarded or lost. If it is set to the slow side, the cursor movement in the left and right direction becomes slow, causing irritation to the fourth controller.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned drawbacks.
Programmable repeat rate settings on a per-key basis provide an ir) suitable interface to the system and receiver? - The purpose of the present invention is to provide a control device.

[Summary of the invention]

In order to achieve the above purpose, the main point is to add a register in which the repeat cycle is set by the process and subunit for each repeat key to the logic of the conventional polar keyboard 1lil control device, and to create a repeat counter. obtains the value set in the above register as the initial value, updates the value sequentially by a repeat counter obtained from the timer, and when the contents of the counter reach a certain 1st shift, generates a repeat code and outputs it to the general manager. And so.

By making the repeat rate programmable in this way, it is possible to provide a flexible interface to the system and the server. .

FIG. 1 is a block diagram showing an example of the configuration of an information processing device in which the present invention is implemented. In the figure, 1 is a key bead unit (KB) consisting of a key switch including a repeat key.
) and ant, key, 1? - connected to the system path 6 via the card controller 3; 2 is a timer that generates the repeat cycle of the repeat key or the scan interval of the keyboard, and receives a signal from the timer 2, scans the key bead unit 1, and receives data from the key bead unit 1. This is a keyboard controller that determines whether a key is a repeat key or a repeat key, and converts it into the code required by software. 4 is a memory that stores programs that control the operation of this device and data created within this device;
A processor unit (CPU) that controls the entire device, and the timer 2 key d? - controller 3,
The memory 4 is commonly connected to the path 6 of this processor unit 5.

FIG. 2 is an embodiment of the present invention showing the key bead controller shown in FIG. 1 in more detail. In the figure, No. 3 scans the key matrix of keep unit 1 at a certain fixed period in response to the output of timer 2,
This is key scan logic that receives input for the pressed key and outputs the code. The signal generated by the key scan logic 31 is the repeat key judgment 1
It is supplied to the m knock 32. The repeat key determination logic 32 is a logic that receives key data from the key scan logic 3 and determines whether or not the pressed key is a repeat key. The signal generated by the repeat key determination logic 32 is supplied to the processor unit 5 and the repeat code output logic 35.

33 is a repeat cycle setting register added according to the present invention. The repeat cycle setting register 33 sets and holds the repeat cycle of each repeat key according to an instruction from the processor unit 5 or a value set in advance in this logic. The output of the repeat cycle setting register 33 is supplied to a repeat counter 34. The repeat counter 34 divides the output from the timer 2 and generates a signal that activates the repeat code output logic 15 when the divided value reaches a certain predetermined value defined by the repeat period setting register 33. The repeat code output logic 35 outputs a repeat code for each repeat key in response to the constant cycle output of the repeat counter 34.

Hereinafter, the operation of the present invention will be explained in detail with reference to FIGS. 1 and 2. Now, consider the cursor key as an alternative example of the repeat key. Timer 2 is constantly operating and outputs a signal at regular intervals, which is then sent to key scan logic 3.
1 and is supplied to the repeat counter 34. In the key scan logic 31, using this timer 2 output method,
Keyboard unit 1tl - constantly scans the constituent keyboard matrix (not shown). Now, suppose that the cursor key "mouth" is pressed. At this time, the key code corresponding to the cursor key "mouth" is output from the key scan information and key return information obtained from the CC.The repeat key judgment logic 32 It is determined that the above output is a repeat key, that is, a cursor key in this case, and it is notified to the processor unit 5 in preparation for subsequent processing.

On the other hand, the processor unit 5 sets the repeat cycle 1 shift of cursor key date in the repeat cycle setting register 33 in advance as the repeat cycle.The repeat key determination logic 32 determines that the pressed key is a repeat key. When this is recognized, the contents of the repeat cycle setting register 33 are loaded as the initial value of the repeat counter 34, and the reheat counter 340 starts decrementing by the timer 2 output.When the contents of the repeat counter 34 become 0" By the way, the code output logic 35 is raised.

At this time, if the cursor key "EI" continues to be pressed, the repeat code output rononok 35 generates a repeat code from the output of the repeat key judgment logic 32, and further outputs it to the processor unit 5. The processor unit 5 loads the contents of the repeat cycle setting register 33 again as the initial value of the repeat counter 34, and instructs the repeat counter 34 to start counting down. still,
If there are several types of repeat key cycles, it goes without saying that repeat cycle setting registers 33 are provided for each type, or the contents of the registers are updated by the processor unit 5 each time.

〔Effect of the invention〕

As described above, according to the present invention, the repeat cycle differs depending on the type of key, so efficient operation is possible. Furthermore, by programming the repeat cycle, more flexible key response can be achieved, providing an optimal interface for the system and oiler.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a configuration example of an information processing apparatus in which the present invention is used, and FIG. 2 is a block diagram showing an implementation 911 of the present invention. 3...Keychain controller, 31...Key scan logic, 32...Repeat key judgment logic,
33...Repeat cycle setting register, 34...Repeat counter, 35...Repeat code 9 output count. Applicant's agent Patent attorney Takeshi Suzue Chapter 1 Figure 2

Claims (1)

[Claims] A keyboard unit with a key matrix configuration including keys with a repeat function, a timer that generates and outputs the key scan interval of the key matrix and the repeat cycle of the repeat key in the keyboard unit, and the key string based on the signal obtained from the timer. ? - a first logic that scans the code unit to obtain data and determines that it is a repeat key; a register in which a value indicating a repeat cycle is set based on a processor instruction for each repeat key; and a register that initializes the contents of the register; a counter whose value is sequentially updated by a signal obtained from the timer, and a second logic which generates a repeat code when the counted value of the counter reaches a predetermined value and outputs it to the processor unit. A keyboard control device comprising: