On-screen channel display
US4081797A · kind A · utility
30Cited by
11References
33Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 21, 1975 |
| Grant date | Mar 28, 1978 |
| Priority date | — |
| Expiry date | Feb 21, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An on-screen television display including means internally of the receiver for generating characters to indicate the channel number, time of day or other data. The system includes circuit means responsive to the horizontal and vertical sync signals of a television receiver for positioning and timing of the display. BCD data is coupled to a character generator, and the output of the character generator is then multiplexed with positioning and timing signals. The multiplexed output is coupled to a video interface which supplies the video signal to the cathode ray tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.