Computer with pointing device mapped into keyboard

Details Computer with pointing device mapped into keyboard Computer with pointing device mapped into keyboard

1994-07-21

1996-01-16

Teska, Kevin J.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

395500, 395893, 345145, 345168, 341 22, H01H 1370

Patent

active

054856140

ABSTRACT:
A small computer architecture in which the CPU can receive multiple kinds of interrupt signals, including one kind which is assigned to indicate the occurrence of a keystroke input and another kind which is assigned to indicate the occurrence of a pointing device input. However, the computer does not include any pointing device as such. Instead, the keyboard microprocessor (i.e. a microprocessor other than the CPU) monitors user keystrokes to the computer's keyboard, and: in response to simple keystrokes, or keystroke combinations which include one of the basic chording keys, the keyboard microprocessor sends a keystroke interrupt to the CPU; and in response to keystroke combinations which include an additional chording key, the keyboard microprocessor sends a pointing-device interrupt to the CPU, and provides a data output corresponding to an emulated pointing-device movement.

REFERENCES:
patent: 4680577 (1987-07-01), Straayer et al.
patent: 4786894 (1988-11-01), Furusawa et al.
patent: 4903222 (1990-02-01), Carter et al.
patent: 4931781 (1990-06-01), Miyakawa
patent: 4974183 (1990-11-01), Miller
patent: 5041819 (1991-08-01), Takeda
patent: 5124689 (1992-06-01), Franz et al.
patent: 5189403 (1993-02-01), Franz et al.
patent: 5198802 (1993-03-01), Bertram et al.
patent: 5245321 (1993-09-01), Franz et al.
PC Magazine, Mar. 27, 1990.
WordPerfect 5.0 Manual, p. 104.

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