Color video signal processing circuits
US4096513A · kind A · utility
6Cited by
2References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 20, 1977 |
| Grant date | Jun 20, 1978 |
| Priority date | — |
| Expiry date | Jun 20, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/91
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Luminance signals, subject to high frequency pre-emphasis, are applied to a first double-ended signal clipping circuit prior to combination with chrominance signals (in the form of modulated color subcarrier waves) to form a composite color video signal. The composite signal is fed to a second double-ended signal clipping circuit having clipping levels beyond those of the luminance signal clipper. The output of the second clipping circuit serves as the modulating signal input for a picture carrier frequency modulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.