Frequency detector for use with phase locked loop
US4594564A · kind A · utility
42Cited by
8References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 11, 1984 |
| Grant date | Jun 10, 1986 |
| Priority date | — |
| Expiry date | Jun 11, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/113
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A frequency detector receiving two input frequencies and generating a pump-up/pump-down signal for control of a phase locked loop by matching the frequency of a voltage controlled oscillator to the frequency. The lock is independent of the phase relationship of the signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.