Method of slow-motion play back of video signals and video tape recorder for same
US4197562A · kind A · utility
34Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1978 |
| Grant date | Apr 8, 1980 |
| Priority date | — |
| Expiry date | Mar 15, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/93
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Two auxiliary heads are provided in addition to the two main heads for a helical scan video signal tape recorder. The vertical and horizontal positions of the auxiliary heads are determined so as to effectively reproduce a slow-motion picture from a magnetic tape on which the signals are recorded using the so called "azimuth" recording method. The output of each head is selectively supplied to a video signal demodulating circuit via a switching circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.