Integrated keyboard system with typing and pointing modes of ope

Details Integrated keyboard system with typing and pointing modes of ope Integrated keyboard system with typing and pointing modes of ope

1992-03-20

1993-09-14

Oberley, Alvin E.

Computer graphics processing and selective visual display system

Display peripheral interface input device

Including keyboard

345157, G09G 302

Patent

active

052453219

ABSTRACT:
A computer system employs an integrated keyboard and pointing device to allow user input of alpha numeric (typing) information, pointing direction information and pointing event information without moving the user's hands from the usual typing position on the keyboard. The new system has typing and pointing modes of operation. In the pointing mode, preassigned keyswitches are used to input pointing events, cursor speed changes, and other modifications to the system's operation. All such modifications are transparent to the operating system and application software because they are processed at keyboard interrupt level.

REFERENCES:
patent: 4680577 (1987-07-01), Straayer et al.
patent: 5124689 (1992-06-01), Franz et al.

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