Color video signal recording and/or reproducing system
US4490749A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 19, 1981 |
| Grant date | Dec 25, 1984 |
| Priority date | — |
| Expiry date | Nov 19, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/83
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A recording system in a color video signal recording and/or reproducing system comprises a first filter for separating a luminance signal from a color video signal, a modulator for frequency-modulating the luminance signal, a second filter for separating a carrier chrominance signal from the color video signal, a first frequency converter for converting the frequency band of the carrier chrominance signal to a frequency band which is lower than frequencies occupied by the output luminance signal of the modulator, a superimposing circuit for superimposing the output of the frequency modulator and the output of the first frequency converter one on the other, a recording circuit for recording the superimposed signal onto a magnetic recording medium, a first separation circuit for separating a horizontal synchronizing signal from the color video signal, and a first frequency-converting signal forming circuit for forming a frequency-converting signal according to the horizontal synchronizing signal separated at the first separation circuit, to supply the separated horizontal synchronizing signal to the first frequency converter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.