Volume control apparatus

Details Volume control apparatus Volume control apparatus

1981-01-26

1982-09-14

Pellinen, A. D.

Electricity: power supply or regulation systems

External or operator controlled

179 1VL, 328 44, H03K 519, H03G 502

Patent

active

043497799

ABSTRACT:
A volume control apparatus wherein a digital output from an up/down counter having a clock input terminal and an up/down control terminal is converted into an analog output by a D/A converter and used as a control input to an electronic attenuator. A rotary pulse generator produces a pulse each time it is rotated through a given operating rotation angle at either a first output terminal or a second output terminal, according to the operating direction. The output terminals are coupled to input terminals of the logic circuit, respectively, an output terminal of the logic circuit is coupled to a clock input terminal of the up/down counter, and the second output terminal is coupled to another input terminal of the logic circuit and to an up/down control terminal of the up/down counter.

REFERENCES:
patent: 4016432 (1977-04-01), Marzalek
patent: 4292467 (1981-09-01), Odlen et al.

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