Color video display system having programmable border color
US4437092A · kind A · utility
24Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1981 |
| Grant date | Mar 13, 1984 |
| Priority date | — |
| Expiry date | Aug 12, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/024
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A central processing unit (10) loads a border register (36) with four color bits representing digital color signals to be used in determining the color of only the border area (40) surrounding the video area (42) of a cathode ray tube display screen (44). A BORDER CONTROL TIME signal is generated at the appropriate times in the horizontal and vertical scanning periods of the cathode ray tube to apply the digital color border signals (R, G, G, I) to a composite video signal generator (38) which generates the composite video signal for a TV set (14) or a TV monitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.