Compatible stereophonic receiver
US4016366A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 14, 1975 |
| Grant date | Apr 5, 1977 |
| Priority date | — |
| Expiry date | Jul 14, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/1653
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A compatible stereophonic receiver capable of receiving a monaural signal, 2-channel stereophonic composite signal and multi-channel composite signal transmitted in the frequency modulated form, which comprises a plurality of band amplifiers each having a bandwidth different from each other so as to amplify an intermediate frequency signal including any of the above-mentioned signals; a discriminator for determining whether the signal received is a monaural signal, 2-channel composite signal, or multi-channel composite signal; and means for selectively connecting a band amplifier which has a bandwidth corresponding to an output signal from the discriminator to a multiplex demodulator through a frequency modulated wave detector and controlling the multiplex demodulator to demodulate an audio signal from the output of the frequency modulated wave detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.