JP2588214B2 - Key code control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to a key code control device serving as an interface between, for example, a keyboard and a computer.

(Prior Art) Generally, in an information processing apparatus such as a computer, a keyboard is used as input means, and a key code control device is interposed between the keyboard and the information processing apparatus.

That is, as shown in FIG. 2, when a key input is performed on the keyboard 1, a predetermined key code is generated by the key code generation device 2 in accordance with the key input, and is temporarily saved in the key buffer 3. Is transferred to the computer 4.

By the way, in such a system, software used in the computer 4 is usually developed based on an existing system.

Therefore, for example, when the keyboard 1 is replaced with a new one in which keys not present in the previous keyboard 1 are set, the system may not operate normally.

That is, the new keyboard 1 replaces the previous keyboard 1
When a key is input using a key that does not exist, a new key code that has not been used in the past is transferred from the key code generation device 2 and the key buffer 3 to the computer 4. The software used in the computer 4 cannot cope with this new key code which has not existed before and malfunctions.

(Problems to be Solved by the Invention) As described above, in the conventional system in which the key code control device is interposed between the key input device such as the keyboard and the information processing device such as the computer, the compatibility with the key input device is improved. There is the above problem.

The present invention has been made based on such circumstances,
It is an object of the present invention to provide a key code control device capable of improving compatibility with key input means.

[Structure of the Invention] (Means for Solving the Problems) That is, according to the present invention, a key code control for generating a key code corresponding to a key input input by a predetermined key input means and transferring the key code to a predetermined information processing apparatus is provided. In the apparatus, key code generation means for generating a predetermined key code in response to a key input by the key input means, and determination means for determining whether the generated key code is a predetermined key code set in advance First key code holding means for holding the generated key code when the generated key code is determined to be a predetermined key code by the determining means; and Second key code holding means for holding the generated key code when it is determined that the generated key code is not a predetermined key code. Delivering the key code held in the first or second key code holding means to the predetermined information processing apparatus, and transferring the key code to the information processing apparatus to the first or second key code holding means; And an interface means for recognizing that the information is held in any of the above.

(Operation) In the present invention, when the interface means transfers the key code held by the first or second key code holding means to a predetermined information processing apparatus, the transfer key code is transmitted to the information processing apparatus by the first key code. Alternatively, the information processing apparatus is made to recognize that the key code is held in any one of the second key code holding means, so that the information processing apparatus can deal with any key code.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of a computer system according to one embodiment of the present invention.

In FIG. 1, reference numeral 11 denotes a keyboard, 12 denotes a key code control device for generating a key code corresponding to a key input on the keyboard 11, and 13 denotes a computer to which the key code generated by the key code control device is transferred.

The key code control device 12 includes a key code generation device 14 for generating a predetermined key code in response to a key input on the keyboard 11, a first key buffer 15 for saving the generated key code, and a second key It is provided with a buffer 16 and performs the following control operation.

That is, in the key code control device 12, when a key input is performed on the keyboard 11, the key code generation device 14 generates a predetermined key code in accordance with the key input.

Then, it is determined whether the generated key code is a predetermined key code set in advance. here,
The predetermined key code set in advance indicates a key code corresponding to each key of the normal keyboard 11 connected to the key code control device 12. A key code other than a predetermined key code is a normal keyboard 11 connected to the key code control device 12.
Indicates a key code corresponding to a key different from the key.

Thereafter, the key codes generated by the key code generation device 14 and corresponding to the predetermined key codes set in advance are stored in the first key buffer 15 in a manner other than the predetermined key codes set in advance. The key code corresponding to the key code is saved in the second key buffer 16.

When the key code generated by the key code generation device 14 is saved in the first key buffer 15, the key code control device 12 interrupts the computer 13, and the computer 13 The key code saved in the first key buffer 15 is read.

When the key code generated by the key code generation device 14 is saved in the second key buffer 16, a timer interrupt occurs on the computer 13 side, and the computer 13 uses the second key buffer of the key code control device 12. Read the key code saved in 16.

As described above, in the key code control device 12 of the present embodiment, even if the key code is generated by the key code generation device 14, the key corresponding to each key of the normal keyboard 11 connected to the key code control device 12 The codes are distinguished from key codes corresponding to keys different from those of a normal keyboard 11 connected to the key code controller 12, and the respective key codes are transferred to the computer 13 or the computer.
The first key buffer 15, which differs in the interrupt method from 13,
Since the data is transferred to the computer 13 via the two routes of the second key buffer 16, even if the keyboard 11 having keys different from those of the normal keyboard 11 is connected to the key code controller 12, Computer 13
Can handle this.

[Effects of the Invention] As described above, in the key code control device of the present invention, the information processing device can deal with any key code, so that compatibility with key input means is improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a computer system according to an embodiment of the present invention, and FIG. 2 is a block diagram showing a configuration of a conventional computer system. 11 ... Keyboard, 12 ... Key code controller, 13 ...
Computer, 14 ... Key code generator, 15 ... First
Key buffer, 16 ... second key buffer.

Claims (1)

(57) [Claims] 1. A key code control device which generates a key code corresponding to a key input input by a predetermined key input means and transfers the key code to a predetermined information processing device, wherein the key code control device generates a key code according to the key input by the key input means. Key code generating means for generating the key code of the above, a determining means for determining whether or not the generated key code is a predetermined key code, and a key code generated by the determining means A first key holding the generated key code when it is determined that the key code has been set;
Key code holding means, and second key code holding means for holding the generated key code when the generated key code is determined not to be a predetermined key code set in advance, The key code held in the first or second key code holding means is transferred to the predetermined information processing apparatus, and the key code transferred to the information processing apparatus is used as the key code of the first or second key code holding means. An interface means for recognizing that the key code is held in any one of the key code control apparatuses.