Video signal detector
US4447774A · kind A · utility
3Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 28, 1981 |
| Grant date | May 8, 1984 |
| Priority date | — |
| Expiry date | Sep 28, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A video detector circuit is disclosed which develops a threshold level from a white or background peak signal in regions of low contrast, and from a combination of both white and black peak levels in regions of high contrast. The circuit is adjustable to compensate for variable affection performance of the detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.