Tear free updates of computer graphical output displays
US5451981A · kind A · utility
39Cited by
11References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1993 |
| Grant date | Sep 19, 1995 |
| Priority date | — |
| Expiry date | Sep 24, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/393
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of eliminating frame tears from the output display in a computer system including the steps of determining a safe region for furnishing data to a frame buffer, selecting a value of a first interrupt to signal the beginning of the safe region, determining the position of the scan from the frame buffer, comparing the value of the position of the scan from the frame buffer and the value of the first interrupt, and transferring information to the frame buffer only in response to the interrupt indicating a safe region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.