Power supply for an audio-video recording system
US3962532A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1975 |
| Grant date | Jun 8, 1976 |
| Priority date | — |
| Expiry date | Apr 18, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/765
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The disclosure relates to a selectively operable power supply for a recording system of the type which includes tuning and intermediate frequency sections for receiving and converting transmitted television signals into composite video and audio signals and a recorder for recording the composite video and audio television signals onto a recording medium. The power supply comprises a timer including a switch which is selectively operable for providing an A.C. line voltage when its contacts are closed at preselected times and a receptacle coupled to the switch and adapted to receive the power input of the recorder for powering the recorder at the preselected times and a rectifier and filter coupled to the switch for powering the tuning and intermediate frequency sections with filtered DC voltage at the preselected times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.