Programmable video graphic controller for smooth panning
US5006837A · kind A · utility
17Cited by
9References
15Claims
0Family size
Inventor
Key dates
| Filing date | Jan 26, 1989 |
| Grant date | Apr 9, 1991 |
| Priority date | — |
| Expiry date | Jan 26, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/346
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display system including a programmable video graphic controller allows for continuous smooth panning through memory which is larger than the system's video memory. The video memory is continuously updated with new image data so as to form two duplicate images within video memory. When an edge of video memory is reached, the displayed image may be shifted from one of the duplicate images to the other within video memory to allow continuous panning without the need to stop and refresh the image data every time an edge of video memory is reached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.