Method of processing video signals for time base correction
US4344087A · kind A · utility
0Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1979 |
| Grant date | Aug 10, 1982 |
| Priority date | — |
| Expiry date | Nov 27, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/932
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of processing video signals for eliminating vertical picture fluctuations caused when a video tape recorder reproduces video signals at a tape speed different from that used for recording the video signals. The vertical picture fluctuations are eliminated by substituting distorted vertical synchronous signals for the original vertical synchronous signal, the distorted vertical synchronous signals generated by a processing apparatus having a correction circuit which corrects for the difference in frequency characteristics between the video signal path and the vertical synchronous signal path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.