Patents Examined by Jeffrey B. Murrell
  • Patent number: 5872603
    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.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: February 16, 1999
    Assignee: Sanyo Electric Co., Ltd.
    Inventor: Ikuo Ohsawa