JPS62229419A - Keyboard connector - Google Patents

Abstract

PURPOSE:To connect different types of keyboards to the same computer main frame by sequentially polling connected plural keyboards so as to input key input data and transferring said data to the computer main frame at the time of polling it from the main frame. CONSTITUTION:A CPU 11 sequentially polls keyboards 2 and 3 through I/O devices 15 and 16 during a fixed period according to a program in a ROM 13. The keyboard 2 transfers the key input data to the CPU 11 through the I/O device 15 when the CPU 11 polls the keyboards. Then the CPU 11 provisionally accumulates the data in a RAM 12. Similarly the keyboard 3 transfers the key input data to the CPU 11 through the I/O device 16 at the time of polling from the CPU 11, which provisionally accumulates the transferred data in the RAM 12. On the other hand, the computer main frame 1 polls the CPU 11 through an I/O device 14 during a fixed period. When the CPU 11 is subjected to the polling, it transfers the key input data accumulated in the RAM 12 to the computer main frame 1 through the I/O device 14.

Description

[Detailed Description of the Invention] FObject of the Invention (Field of Industrial Application) The present invention is a keyboard connection device for connecting various keyboards to a computer system, etc.! Regarding.

(Prior Art) FIG. 3 shows an example of a conventional keyboard connected to a computer main body, in which a keyboard 2 is connected to the computer main body 1 via an interface line 3.

However, as shown in the figure, one type of keyboard 2 is connected to the computer body 1 on a one-to-one basis, so if you want to use a keyboard for a different purpose, you must connect the desired keyboard to the computer body 1 each time. figure,
The drawback was that the photographic quality was poor.

(The pinnacle of the invention's solution) As mentioned above, <In the past, it was not possible to connect multiple different types of keyboards to the computer main body, and keyboards for different purposes had to be connected to the computer main body each time. There was a drawback.

SUMMARY OF THE INVENTION The present invention aims to eliminate the above-mentioned drawbacks, and provides a keyboard connection device that can connect several different types of keyboards to the same computer to improve data input operability. .

[Structure of the Invention] (Means for Solving the Problems) A keyboard connection device of the present invention connects a plurality of keyboards.
Connector means for connecting via an interface line and connecting the computer main body via the interface line; Data input means for sequentially polling the plurality of connected keyboards and inputting key input data transferred from each keyboard. and data transfer means for transferring the input key input data to the computer main body in response to polling from the computer main body.

(Function) In the keyboard connection device of the present invention, the input means sequentially polls the transfer of key input data from each of the plurality of connected keyboards, temporarily stores the received key input data, and stores the key input data transferred from each of the plurality of connected keyboards. Since the data transfer means transfers the data to the computer main body when polling from the computer main body, the boring operation etc. from the computer main body remains the same as before, and the polling action by the data input means corresponds to the number of connected keyboards. This allows multiple keyboards to be connected to the same computer main body, significantly improving the operability when inputting data.

(Example) An example of the present invention will be described below with reference to the drawings, in which the same parts as those of the conventional example are denoted by the same reference numerals. FIG. 1 is a block diagram showing an embodiment of a system using the keyboard connection device of the present invention. A keyboard connection device is connected to the computer main body 1 via the interface line 5! 4 is connected, and furthermore, an interface line 6 is connected to this keyboard connection device 4.
．． A keyboard 2.3 is connected via 7. Note that the interface lines 5.6.7 are physically and logically identical to the conventional interface line 3 shown in FIG.

FIG. 2 is a block diagram showing a detailed example of the keyboard connection device 4 shown in FIG. 1. 11 is a CPU that controls the entire keyboard connection device, 12 is a RAM that stores key input data, 13 is a ROM that stores programs that operate the CPU 11, and 14 is the computer main body 1 and this guitar board control device! ! 15 is an input/output device that controls data input/output between the keyboard 2 and main body N3; 16 is an input/output device that controls data input/output between the keyboard 3 and the main body N3; It is an output device.

Next, the operation of this embodiment will be explained. CPU11 is R
According to the program of OM13, input/output device 15.16
The keyboard 2.3 is sequentially polled at regular intervals via the . The keyboard 2 receives key input data via the input/output device 15 during polling of the CPU 11.
The CPU 11 temporarily stores this data in the RAM t2. Similarly, the keyboard 3 transfers key input data to the cpuli via the input/output device 16 during polling from the CPU 11, and the CPU 11 temporarily stores the transferred data in RΔM12. On the other hand, the computer main body 1 receives data via the input/output device 14 at regular intervals.
Poll puil. Upon receiving this polling, the CPU II transfers the key input data stored in the RAM 112 to the computer main body 1 via the input/output device 14.

According to this embodiment, by using the keyboard connection device @4, different types of keyboards 2 and 3 can be connected to the computer main body 1 at the same time, and key data from each keyboard can be input into the main body 1. Further, since the polling operation of the computer main body 1 and the transfer operation of key input data of the keyboard 2.3 remain the same as before, the above effects can be easily and inexpensively obtained using the existing computer main body and keyboard. .

[Effects of the Invention] As described above, according to the keyboard connection device of the present invention, key input data is input by sequentially polling a plurality of connected keyboards, and the input key input data is transmitted from the computer main body. By transferring the data to the computer when polling, it is possible to connect multiple keyboards of different types to the same computer.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an embodiment of a system using the keyboard connection device of the present invention, Fig. 2 is a block diagram showing an embodiment of the keyboard connection device of the present invention, and Fig. 3 is a conventional system. 1 is a block diagram showing an example of a computer system. 1...Computer body 2.3...Gee board 4...Keyboard connection device 11...CPU 12...RAM 13...ROM 14, 16...Input/output device Agent Patent attorney Rules Noriyoshi Chika (Same as right, Sanno - 3rd picture)

Claims (1)

[Claims] connector means for connecting a plurality of keyboards and a computer main body; data input means for sequentially polling the plurality of connected keyboards and inputting key input data transferred from each keyboard; and responding to polling from the computer main body. and data transfer means for transferring the entered key input data to a computer main body.