FM stereo demodulating device
US4146747A · kind A · utility
3Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1976 |
| Grant date | Mar 27, 1979 |
| Priority date | — |
| Expiry date | Sep 29, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/1646
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A sub-carrier switching signal is fed to a double balanced multiplier only when a pilot signal is detected, and the separation of the right and left channel outputs of the multiplier is performed only after the level of the pilot signal reaches a predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.