Motor vehicle radio with an automatic volume control device

Details Motor vehicle radio with an automatic volume control device Motor vehicle radio with an automatic volume control device

1989-05-10

1991-06-25

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

H04B 116

Patent

active

050274325

ABSTRACT:
The invention relates to a motor vehicle radio with an automatic volume control device (20) and a manual volume-setting device (14). The automatic volume control device (20) is fed with a speed signal detected by a speed sensor and delivers a volume signal associated with the detected speed signal. The manual volume-setting device (14) generates a volume signal corresponding to the volume which has been set. A two-position switch (16) is provided for selectively applying the volume signal from the automatic volume control device (20) or from the manual volume-setting device (14) to an output stage (12) which feeds the loudspeakers (13). When the manual volume-setting device (14) is switched on, following a detection signal for a desired vehicle speed, the volume signal corresponding to the volume which has been set can be stored in a storage and control circuit (23) of the automatic volume control device (20).

REFERENCES:
patent: 2080554 (1937-05-01), Wolff
patent: 4558460 (1985-12-01), Tanaka et al.

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