Apparatus and process for recording with variable correction of a television signal having three components
US4170022A · kind A · utility
3Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1978 |
| Grant date | Oct 2, 1979 |
| Priority date | — |
| Expiry date | Feb 10, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/22
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A process for recording on a video-disc a television signal comprising a luminance signal, a chrominance signal, and a sound signal, wherein these three signals modulate respectively three carrier-waves. The three modulated carrier-waves are added and then optically recorded onto said video-disc along a spiral track. The level of these three modulated carrier-waves are each processed according to their own correction parameters related to the distance of the recording point from the center of the video-disc, thus allowing the disc to be later read without any correction processing during reading out.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.