Multiple function control circuit for an AM stereo receiver

Details Multiple function control circuit for an AM stereo receiver Multiple function control circuit for an AM stereo receiver

1987-11-16

1989-07-04

Isen, Forester W.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Broadcast or multiplex stereo

H04H 500

Patent

active

048457507

ABSTRACT:
In an AM stereophonic receiver a voltage is developed in response to negative overmodulation in the received signal, to detection of a pilot tone, to detection of a minimum or no signal strength condition, and to external control. Predetermined levels of this voltage are utilized to enable/disenable various function circuits within the receiver to optimize the operation.

REFERENCES:
patent: 4375580 (1983-03-01), Sauer
patent: 4379208 (1983-04-01), Isbell et al.
patent: 4430747 (1984-02-01), Streeter
patent: 4606075 (1986-08-01), Eastmond
patent: 4688254 (1987-08-01), Ecklund
patent: 4712241 (1987-12-01), Ecklund

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