Analog circuit controller using signals indicative of control vo

Details Analog circuit controller using signals indicative of control vo Analog circuit controller using signals indicative of control vo

1994-09-22

1999-02-16

Peng, John K.

Television

Image signal processing circuitry specific to television

Dc insertion

348512, 348705, 307130, 315386, 341152, H04N 518

Patent

active

058726039

ABSTRACT:
An analog circuit controller having fewer signal paths and elements is disclosed herein. A microcomputer has a first D/A converter for generating control voltages variable into a plurality of levels in a time-divided manner and a second D/A converter for generating switching signals of various levels each indicative of the type of a control voltage. The analog circuit controller receives the outputs of the first and second D/A converters and responds to the output of the second D/A converter to select the necessary circuit to be controlled to which the control voltage is to be applied. As a result, a plurality of circuits to be controlled can be controlled through only two signal lines.

REFERENCES:
patent: 3996582 (1976-12-01), Sinobad
patent: 4879625 (1989-11-01), Potenzone
patent: 5231475 (1993-07-01), Ritter et al.
patent: 5239243 (1993-08-01), Rothe et al.
patent: 5262680 (1993-11-01), Hu

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