Digital frequency lock tuning system
US4476584A · kind A · utility
17Cited by
5References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 8, 1979 |
| Grant date | Oct 9, 1984 |
| Priority date | — |
| Expiry date | Feb 8, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J5/0263
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A tuning system for use in radio frequency multi-signal receiving systems, e.g a CATV converter, utilizes a closed feedback loop digital arrangement for channel selection (local oscillator frequency control) and channel fine tuning. The system may be implemented either via discrete hardware or through the use of microprocessor controlled apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.