Method and apparatus for extracting binary signals included in vertical blanking intervals of video signals
US4786985A · kind A · utility
8Cited by
16References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 21, 1986 |
| Grant date | Nov 22, 1988 |
| Priority date | — |
| Expiry date | Aug 21, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for the extraction of vertical interval time code (VITC) included in the vertical blanking interval of a television signal reproduced from video tape transported past a rotating transducer over a wide range of speeds. VITC information is extracted at a rate derived from the rate of a control signal having a rate proportional to the velocity at which the tape is transported past the transducer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.