System and method providing improved FM carrier squelch system
US6564041B1 · kind B1 · utility
1Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 1, 2000 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Dec 26, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/342
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An improved squelch system (10) is provided in accordance with the present invention. The system includes a high-deviation subsystem (20) to detect a carrier with modulation, and a low-deviation subsystem (30) to detect the carrier with minimal modulation. If either the high-deviation system (20) or the low-deviation system (30) indicate a signal of sufficient strength, an output for the squelch system is set to un-mute, otherwise the output (70) is set to mute.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.