Audio amplifier with programmed volume control

Details Audio amplifier with programmed volume control Audio amplifier with programmed volume control

1987-02-27

1988-12-20

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

455217, 455232, 381107, H03G 300

Patent

active

047929901

ABSTRACT:
In a programmed audio amplifier system, the volume setting when the system is turned on is conditionally related to the last volume setting, i.e., immediately before the amplifier was turned off. At turn-on the system remains at the last volume setting as long as it is less than a preset volume setting. However, at turn-on the system exhibits the preset volume setting if the last volume setting exceeds the preset volume setting.

REFERENCES:
patent: 3873921 (1975-03-01), Petrinec
patent: 3953801 (1976-04-01), Podowski
patent: 4158814 (1979-06-01), Imazeki et al.
patent: 4313213 (1982-01-01), Farina et al.
patent: 4454608 (1984-06-01), Maeba
patent: 4495652 (1985-01-01), Leslie
patent: 4553257 (1985-11-01), Mori et al.
patent: 4718114 (1988-01-01), Brandt

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