Video disc encoding and decoding system providing intra-field track error correction
US4551770A · kind A · utility
11Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1984 |
| Grant date | Nov 5, 1985 |
| Priority date | — |
| Expiry date | Apr 6, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S358/907
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Video disc track numbers are conveyed during each video line by means of data subcarriers present in the recorded stereo audio channels. Upon playback, the data sequence is processed to identify tracking errors occurring within each video field to thereby enable immediate correction of disc tracking errors on a line-by-line basis thus minimizing picture and sound interruption caused by intra-field tracking errors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.