Methods and apparatus for CYMK-RGB RAMDAC
US5289565A · kind A · utility
17Cited by
8References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 1, 1992 |
| Grant date | Feb 22, 1994 |
| Priority date | — |
| Expiry date | May 1, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G1/285
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A thirty-two bit frame buffer provides real time conversion of CYMK color data to RGB color data for display on a video monitor. The frame buffer operates at a video rate of 100 mHz and includes pipelined arithmetic using look up tables for some of the CYMK to RGB conversion steps. Also provided are look up tables providing gamma correction and pixel-by-pixel selection of CYMK to RGB conversion, to allow display of an RGB window in a CYMK information display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.