Video signal recorder/player devices
US5029015A · kind A · utility
4Cited by
3References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 23, 1989 |
| Grant date | Jul 2, 1991 |
| Priority date | — |
| Expiry date | Jan 23, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/782
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video signal recorder/player device, e.g. a video tape recorder, is adapted to select a playback channel to be any one of a plurality of UHF television channels. A microcontroller in the device sets a UHF tuner in the device to each UHF channel in turn and tests the signal level in the channel. A free channel containing substantially no signals is selected, when found, as the playback channel, only when the immediately adjacent lower channel does not contain a wanted broadcast television transmission. Once a selection is made, the microcontroller sets the playback channel frequency to that of the selected channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.