Television signal modification apparatus
US4307416A · kind A · utility
31Cited by
6References
26Claims
0Family size
Inventor
Key dates
| Filing date | Nov 5, 1979 |
| Grant date | Dec 22, 1981 |
| Priority date | — |
| Expiry date | Nov 5, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/1716
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus is disclosed which modifies a video signal (in the video frequency range) for scrambling (encoding) and unscrambling (decoding) video signals for television pictures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.