Extendable-size color look-up table for computer graphics system

Details Extendable-size color look-up table for computer graphics system Extendable-size color look-up table for computer graphics system

1988-06-29

1991-08-06

Harkcom, Gary V.

Boots, shoes, and leggings

340703, 340701, G06F 3153, G09G 506

Patent

active

050383000

ABSTRACT:
A video display system for a computer graphics workstation expands the color look-up table external to the video digital-to-analog (DAC) chip by providing, for each color, a bank of one or more color look-up table extender chips. The extender chips for a given color are connected in series and the banks are connected in parallel between the frame buffer and the video DAC chip. On a pixel-by-pixel basis, and for each color channel, one of the look-up tables afforded by the extender chips or the video DAC chip is accessed using an index from the frame buffer.

REFERENCES:
patent: 4183046 (1980-01-01), Dalke et al.
patent: 4225861 (1980-09-01), Langdon, Jr. et al.
patent: 4484187 (1984-11-01), Brown et al.
patent: 4727425 (1988-02-01), Mayne et al.
patent: 4769632 (1988-09-01), Work et al.
patent: 4835527 (1989-05-01), Hersh

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