Method for quickly painting and copying shallow pixels on a deep frame buffer
US5696945A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 1997 |
| Grant date | Dec 9, 1997 |
| Priority date | — |
| Expiry date | Jan 6, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/123
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video subsystem of a computer processor is shown to include a graphics controller coupled to a video memory. A method for improving graphics performance for applications which use fewer bits per pixel than provided in the graphics subsystem includes the steps of rearranging the pixel and byte data in video memory such that corresponding bytes of different pixels are stored in different, simultaneously accessible locations of the video memory. With such an arrangement, accesses to video memory may be provided which utilize all of the available bytes of the video memory bus, thereby increasing the performance of the graphics operation. In addition, a graphics system having a plurality of independently operating memory controllers is shown to further improve graphics performance by ensuring that the video memory bus operates at full capacity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.