Method and apparatus for a self-clearing copy mode in a frame-buffer memory
US4988985A · kind A · utility
6Cited by
17References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1989 |
| Grant date | Jan 29, 1991 |
| Priority date | — |
| Expiry date | Jul 24, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/393
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A three-dimensional frame-buffer memory organized into a series of planes each storing one bit representative of a pixel on the display can draw a figure onto one of the planes. The figure can then be copied to preselected ones of the other planes while the first plane is cleared. A bit block transfer can be performed from an "invisible" portion of the first plane to pre-selected ones of the other planes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.