Color video signal recording and/or reproducing system
US4178606A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 13, 1976 |
| Grant date | Dec 11, 1979 |
| Priority date | — |
| Expiry date | Oct 13, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/84
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A color video signal recording system frequency modulates a luminance signal separated from an input color video signal. A first signal processing means converts the frequency of the carrier chrominance signal separated from the input color video signal. The conversion is to a band which is lower than the band of the frequency-modulated luminance signal. The carrier chrominance signal is processed to advance the phase thereof, successively by 90.degree. for every horizontal scanning period, during a specific period. Thereafter, the phase lags successively by 90.degree. for every horizontal scanning period during a successive specific period. For recording, the said frequency-modulated luminance signal and carrier chrominance signal are multiplexed processed, and recorded on a plurality of tracks which are mutually disposed in parallel on a recording medium. The recording is performed in such a manner that a carrier chrominance signal of a phase advancing successively by 90.degree. and a carrier chrominance signal of a phase lagging successively by 90.degree. are in side-by-side disposition on mutual adjacent tracks. A color video signal reproducing system reproduces a signal record…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.