Stereo identifying signal detection device

Details Stereo identifying signal detection device Stereo identifying signal detection device

1981-09-04

1983-09-13

Hickey, R. J.

179 1GN, H04H 500

Patent

active

044044321

ABSTRACT:
A stereo identifying signal detection device, with a circuit for phase detecting a received stereophonic broadcast signal and detecting a stereo identifying signal, an exclusive OR circuit for generating a pulse for every cycle period of the detected stereo identifying signal, and a control circuit for integrating the pulse signal thus generated to obtain a DC voltage used to turn on a stereo receiving state indicating lamp.

REFERENCES:
patent: 4170716 (1979-10-01), Hilbert et al.
patent: 4249039 (1981-02-01), Fisher et al.
patent: 4344038 (1982-08-01), Streeter

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