Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1994-01-03
1995-02-28
Jankus, Almis
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
395162, 395163, 395164, 395166, 345150, 345153, G06F 1562
Patent
active
053945190
ABSTRACT:
A color video system includes a palette data register for storing triplets of color data that control the colors of pixels. The triplets are stored at indexed locations accessed by an autoincrementing index register. When an application is switched from the foreground, one or more palette data register accesses are made until the index register is incremented, and a triplet pointer is set in accordance with the number of accesses, to point to the triplet member that was being accessed when the foreground switch occurred. When the application is switched back into the foreground, the value stored in the triplet pointer is used to point to the triplet member being accessed when the foreground switch occurred.
REFERENCES:
patent: 5309551 (1994-05-01), Guttag et al.
International Business Machines Corp.
Jankus Almis
Jobse Bruce D.
McKechnie Douglas R.
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