Extendable-size color look-up table for computer graphics systems
US5038300A · kind A · utility
36Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1988 |
| Grant date | Aug 6, 1991 |
| Priority date | — |
| Expiry date | Jun 29, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/06
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.