Color television encoder signals
US4100568A · kind A · utility
1Cited by
4References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 5, 1976 |
| Grant date | Jul 11, 1978 |
| Priority date | — |
| Expiry date | May 5, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N11/183
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Color television chrominance signal encoding is improved by alternately keying parallel modulators controlled by independent oscillators. Improved luminance signal encoding minimizing crosstalk is achieved by selected filtering, delay and threshold control in response to repetitive high signal level conditions. Circuitry for improving luminance signal encoding is described which is useful in both fm and am video signal processing applications. A preferred embodiment of an encoder is described which is operative according to the French SECAM standard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.