Television video signal control system
US4970594A · kind A · utility
16Cited by
4References
2Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Feb 23, 1989 |
| Grant date | Nov 13, 1990 |
| Priority date | — |
| Expiry date | Feb 23, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/53
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A television video signal control system is disclosed in which an amplitude control signal and a clamp voltage control signal digitally detected in the automatic gain control and clamp voltage control of a television signal receiver respectively are applied alternately to a single D/A converter. The resulting analog signal is sampled and held alternately at holding circuits corresponding to the two control signals. A D/A converter for converting the two control signals from digital to analog state is thus saved as compared with the prior art.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.