Automatic pre-programming system for TV receivers
US4236182A · kind A · utility
9Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1978 |
| Grant date | Nov 25, 1980 |
| Priority date | — |
| Expiry date | Apr 26, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J5/0263
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An automatic tuning scheme for use in TV receivers includes a start/stop circuit which creates a search start signal and a search stop signal upon the receipt of a search start instruction and a detected incoming signal, respectively, a tuning voltage generator which generates a gradually varying tuning voltage under control of the search start signal and search stop signal, and a memory circuit for storing the tuning voltage from the generator when desired. The tuning voltage stored in the memory circuit is supplied to a tuner including a well known voltage-sensitive capacitance diode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.