Frame register switching for a video processor

Details Frame register switching for a video processor Frame register switching for a video processor

1996-03-13

1996-11-19

Tung, Kee Mei

Computer graphics processing and selective visual display system

Display driving control circuitry

Controlling the condition of display elements

395501, 345112, G06F 1200

Patent

active

055771920

ABSTRACT:
A video register interface for a video processor in which each frame register has a first storage element which is written by a microprocessor interface independently from a second storage element which outputs control data to video processing circuitry. Since reading and writing are done independently to different storage elements, the contents of the register can be changed without adverse effects on a displayed image. The register interface is used in a CMOS video processor which in turn is used in a microprocessor based multimedia computing system.

REFERENCES:
patent: 3982063 (1976-09-01), Brown et al.
patent: 4496976 (1985-01-01), Swanson et al.
patent: 5091717 (1992-02-01), Carrie et al.
IBM Technical Disclosure Bulletin, vol. 20, No. 10, Mar. 1978, p. 4148 "Viewporting in an Alphanumeric Display" By: A. M. Robins and H. L. Rowe.

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