Apparatus for recording and reproducing video signal and digital signal other than video signal
US4758903A · kind A · utility
18Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1985 |
| Grant date | Jul 19, 1988 |
| Priority date | — |
| Expiry date | Nov 20, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/8355
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a recording and reproducing apparatus wherein a video signal and an audio signal are recorded on the same recording track, a signal subjected to a quadrature differential PSK modulation with PCM audio signal is generated as an audio recording signal. The audio recording signal is disposed between occupied bands of FM luminance signal and down converted chrominance signal in a video recording signal and also recorded on a track where the video recording signal is to be recorded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.