Power supply arrangement for a tuning system
US4281349A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 29, 1980 |
| Grant date | Jul 28, 1981 |
| Priority date | — |
| Expiry date | Apr 29, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A tuning system of a television receiver includes a non-volatile memory for storing tuning information. Control apparatus allows memory locations of the memory to be selectively programmed during a set-up procedure for tuning respective channels and thereafter to be selectively interrogated during channel selection. A power supply for providing a supply voltage for the memory includes apparatus for maintaining the magnitude of the supply voltage at a relatively low level when the receiver is on but the tuning system is dormant, and for increasing the magnitude of the supply voltage to a change-enabling level for a predetermined time after the operation of switches for enabling the memory to be programmed during set-up and interrogated during channel selection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.