Color graphics system
US5068644A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 1988 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | May 17, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A color graphics system for use with a computer. The color graphics system utilizes a look-up table having index values to be stored in a frame buffer. The look-up table is addressed by providing color information, such as RGB color information to the table. The index values may be used to index a second look-up table for providing color information, such as RGB color information. The present invention further disclosed methods of insuring index values provided by the look-up table closely approximate the desired color within the available color space. Further the present invention provided methods for performing arithmetic transfer operations on colors represented by indexes in the frame buffer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.