System and method for simultaneously displaying a plurality of video data objects having a different bit per pixel formats
US6108014A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 1996 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Dec 19, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/125
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A computer system and graphics controller which stores video data in memory corresponding to a plurality of video objects and presents the video objects on a video monitor, wherein a plurality of the video objects have differing numbers of bits per pixel formats. System memory stores video data in a plurality of memory areas for each of the plurality of video objects, wherein the plurality of video objects may have differing numbers of bits per pixel. The graphics controller obtains portions of the video data from the plurality of memory areas and in response provides video signals to the video monitor. The computer system and graphics controller performs pointer-based and/or display list-based video refresh operations that enable video object data to be assembled on a per window or per object basis, thereby greatly increasing the performance of the graphical display. The graphics controller maintains pointers to various areas or buffers in system memory comprising video or graphics display information. The graphics controller also manipulates respective object information workspace memory areas corresponding to each object or window, wherein the workspace areas specify data types,…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.