Apparatus for rapidly switching between frames to be presented on a computer output display
US5043923A · kind A · utility
21Cited by
6References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1991 |
| Grant date | Aug 27, 1991 |
| Priority date | — |
| Expiry date | Feb 12, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/399
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A computer output system having a first full screen bitmapped memory, a second full screen bitmapped memory, logic circuitry for providing input signals for writing information to be displayed by an output device to each position of the first memory, logic circuitry for storing in the second memory the positions of each position of the first memory to be written to the output device, and logic circuitry for comparing the signal stored at each position of the first memory and the signal stored at the same position of the second memory to determine whether information at the position is to be written to the output device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.