Patents by Inventor Sukehisa Sudo

Sukehisa Sudo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5513089
    Abstract: A switching power source control circuit comprising a comparator, a thin-out-processed pulse generator, a thinned-pulse detector, and a reset speed regulator, wherein: the comparator compares an output signal of an error amplifier with a variable reference voltage generated by the reference voltage regulator to generate a signal for performing thin-out operation in accordance with a voltage difference between the output signal of the error amplifier and the reference voltage; the thin-out-processed pulse generator generates thin-out-processed pulses on the basis of the output signal of the comparator; the thinned-out pulse detector detects the generation of thinned-out pulses or driving pulses while always monitoring the thin-out-processed pulses generated from the thin-out-processed pulse generator, and changes the reference voltage of the reference voltage regulator in the case where the thin-out rate is in a range of from 0 to 1/2 in the direction to make it difficult to perform thin-out operation to there
    Type: Grant
    Filed: June 15, 1994
    Date of Patent: April 30, 1996
    Assignees: Hiyoshi Electric Works Co., Ltd., Micron Instrument Inc., Tohoku Ricoh Co., Ltd., Tsuneo Ikenoue
    Inventors: Sukehisa Sudo, Hitokatsu Hashimoto, Junichi Sasaki, Tsuneo Ikenoue