Television video signal A/D converter apparatus
US4642693A · kind A · utility
12Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 13, 1985 |
| Grant date | Feb 10, 1987 |
| Priority date | — |
| Expiry date | May 13, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/362
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A television video signal A/D converter apparatus in a liquid crystal television receiver has an A/D converter for A/D converting a television video signal. Upper and lower reference potentials for determining an operating voltage amplitude are supplied to the A/D converter from a reference potential generator. The upper and lower reference potentials are divided at a given ratio by a resistor so as to fix an average potential of the television video signal at a constant value using the potential at the dividing point as a bias potential, and thereafter the television video signal is supplied to the A/D converter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.