Vehicular radio receiver having muting circuitry for suppressing

Details Vehicular radio receiver having muting circuitry for suppressing Vehicular radio receiver having muting circuitry for suppressing

1992-09-28

1993-11-16

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

4551521, 455223, 455345, H04B 110

Patent

active

052631907

ABSTRACT:
A vehicular radio receiver includes a receiver main body provided adjacent to an antenna mounted on a vehicle body, a receiver operation unit provided in a compartment of the vehicle spaced from the receiver main body for sending a pulse signal for operating the receiver main body thereto, and a control circuit for forcibly and continuously lowering an output derived from the receiver main body during a time in which the pulse signal is transmitted from the receiver operation unit. Noises caused by the pulse signal transmitted to the receiver main body from the receiver operation unit are prevented from being audibly output from a speaker.

REFERENCES:
patent: 2973431 (1961-02-01), Sontheimer
patent: 3793590 (1974-02-01), Etling et al.
patent: 3995219 (1976-11-01), Rasehorn et al.
patent: 4127743 (1978-11-01), Ozawa et al.
patent: 4525869 (1985-06-01), Hamada et al.
patent: 4531232 (1985-07-01), Sakurai
patent: 4683386 (1987-07-01), Kamikawara
patent: 4837802 (1989-06-01), Higashiyama et al.

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