Method and apparatus for displaying a video window in a computer graphics display
US5777631A · kind A · utility
6Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 1997 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Sep 11, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/125
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus of displaying video and graphics data together in a computer graphics display using only the memory needed for the graphics display includes determining the location of the video window in the frame buffer, writing video data to the portion of the frame buffer bounded by the video window. During the raster scan of the frame buffer, if the raster position is within the video window, video data are read from the video data addresses within the video window. When the displayed video window position is changed, the video data are moved accordingly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.