JP3088597U - PS / 2 additional port and key input device including PS / 2 additional port - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To enable connection and operation without limiting a peripheral device connected to a PS / 2 additional port. An internal circuit of a key input device including a PS / 2 additional port and a PS / 2 additional port is appropriately changed, and
A circuit for determining what kind of peripheral device is connected or a ROM with built-in software is added.

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION A technology for commercializing an additional port of a PS / 2 port as an interface for connection to a computer and a key input device including the additional port.

[0002]

2. Description of the Related Art In a conventional PS / 2 additional port and a key input device including the additional port, peripheral devices connected to the PS / 2 additional port and operable are limited. In addition, the internal circuit must be changed depending on the peripheral device to be connected.

[0003]

[Problems to be solved by the invention]

 Peripheral devices connected to the PS / 2 additional port can be connected and operated without limitation.

[0004]

[Means for Solving the Problems]

 In order to solve the problem, the internal circuit of the PS / 2 additional port and the key input device including the PS / 2 additional port is appropriately changed, and a circuit or software is provided for determining what kind of peripheral device is connected. Is added.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. The PS / 2 additional port in the embodiment was formed integrally with the key input device. Although the key input device including the PS / 2 additional port in the embodiment conforms to a generally used mode, the number of keys and the key arrangement of the key input device are not limited in the claims of the present invention.

In the embodiment,

A key input device including a PS / 2 additional port having the appearance as shown in FIG. 1 was created. The specific contents of the internal circuit and software are the core of the new model and will not be disclosed. The claims of the new model are functions that they have in any detail.

[0007]

EXAMPLE A "key input device with a PS / 2 additional port", which covers all of the above means for solving the problem to be solved by the present invention, was prototyped. In the prototype device, the most standard key input device was modified.

[0008]

[Effect of the Invention] The use of the PS / 2 additional port and the key input device according to the present invention is the same as that of the conventional device in both the mounting method and the use method, and there is no inconvenience. Peripheral devices connected to the PS / 2 additional port and operable are not limited, and there is no need to change the internal circuit depending on the peripheral device connected.

[Brief description of the drawings]

FIG. 1 Example of creating a key input device including a PS / 2 additional port

[Explanation of symbols]

 A- Computer connection cable B-Key input device C-PS / 2 additional port

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[Procedure amendment]

[Submission date] April 23, 2002 (2002.4.2
3)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim for practical new registration

[Correction method] Change

[Correction contents]

[Utility model registration claims]

Claims (1)

[Utility model registration claims] An internal circuit or a key input device having the internal circuit for connecting and operable an input peripheral device such as a pointing device and keyboard having a generally used PS / 2 interface. .