Title: Automatic control system for condition-responsively switching over transceiver and radio or tape recorder audio signals

Abstract: Disclosed is an automatic control system for condition-responsively switching over audio signals from transceiver, radio or tape recorder. It is characterized in that a transceiver squelch control circuit having a transistor is connected through its collector electrode to a radio or tape recorder audio signal switching transistor at the base electrode thereof, thereby voltage variation in the squelch control circuit is transmitted to the radio or tape recorder audio signal switching transistor which in turn functions to switch off the radio or tape recorder audio signal.

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Inventors: Arai, Kazuo (Kitamoto, JA)

Application Number: 556491
Filing Date: 1975-03-07
Publication_date: 1976-07-27
Assignee: Nissan Denshi Company Limited (Ohmiya, JA)
Primary Class(es): 455/88 455/133
Other Classes:
US Patent Ref:

3277374	Oct, 1966	Kobayashi	325/18.
3745467	Jul, 1973	Lundquist et al.	325/304.

Other Refs:
Primary Examiner: Safourek, Benedict V.
Assistant Examiner:
Attorney: Graham; Thomas B.