Method and system for accessing and displaying a compressed display image in a computer system
US5936616A · kind A · utility
124Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1996 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Aug 7, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/121
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display controller, implemented in software or hardware, maintains the primary display image visible on a computer monitor in compressed subregions or chunks. The controller emulates a conventional frame buffer by making the compressed image appear as if it has a linear address space. Most of the image is compressed and the remainder is selectively decompressed and cached to satisfy read and write requests. To display the image, the controller decompresses the display image's constituent subregions and buffers the decompressed data so that it can be scanned out to a display monitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.