Chroma signal recording and reproducing circuit
US4524380A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1982 |
| Grant date | Jun 18, 1985 |
| Priority date | — |
| Expiry date | Dec 7, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/898
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A chroma signal recording and reproducing circuit of a magnetic recording and reproducing apparatus having a recording circuit for frequency-modulating a luminance signal of a color video signal, low-frequency converting a chroma signal and frequency-multiplexing those signals for recording and a reproducing circuit for frequency-converting the low-frequency converted chroma signal in a reproduced signal and frequency-demodulating the FM luminance signal to reproduce a color video signal is disclosed. The circuit comprises a chroma signal recording circuit including a first ACC circuit and a first frequency converter connected to the first ACC circuit, and a chroma signal reproducing circuit including a second ACC circuit, a second frequency converter connected to the second ACC circuit, a comb filter connected to the second frequency converter and a deemphasis circuit connected to the output of the comb filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.