Skew calculation using information recorded along a single timing track
US4342057A · kind A · utility
7Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1980 |
| Grant date | Jul 27, 1982 |
| Priority date | — |
| Expiry date | Jun 16, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides apparatus for calculating the skew distortion introduced in each channel of a multi-channel longitudinal recorder when recorded information signals in at least two channels contain a detectable characteristic. In accordance with the invention, a timing signal is recorded containing certain information that is used, upon playback, to produce a reference marker which is compared with the detectable characteristics of recorded information signals to produce a measure of skew distortion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.