Color conversion acceleration using lookup tables
US6690489B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 1999 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Dec 2, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/603
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A graphics language interpreter includes one or more color converters that accept input color values and that algorithmically convert such input color values to output color values. The color converters are specified by a standard that defines the predefined graphics language. The color converters use color conversion algorithms that are potentially specified by graphics commands during rendering. A lookup component is associated with the color converters. The lookup component indicates output color values corresponding respectively to selected input color values. The lookup component is initialized with output color values that are converted from the selected input color values by the converters. During rendering, the graphics language interpreter uses the lookup component rather than the one or more color converters to convert input color values to output color values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.