Graphics command processing method in a computer graphics system
US5315696A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1991 |
| Grant date | May 24, 1994 |
| Priority date | — |
| Expiry date | Aug 21, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/127
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a computer graphics system, an address generator processes physical and virtual addresses using a common command set. A separate translator provides conversion from generated virtual addresses to physical addresses. The address generator formulates addresses as a function of distance from the origin of desired destination area in destination memory to the requested position in the destination area. A plurality of drawing graphics commands specify different raster drawing operations. A plurality of context graphics commands is used to define a desired context in which drawing graphics commands operate. The defined context includes destination location for resulting data, type and plane depth of graphics operations, foreground and/or background color of resulting data. Different parts of the context are changeable/redefinable independently of the other parts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.