Patents by Inventor Shouzou Ohshima

Shouzou Ohshima 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).

  • Power supply control device for protecting a load and method of controlling the same
    Patent number: 6222355
    Abstract: When the power supply from a power source 101 to a load 102 is controlled in a switching manner by a semiconductor switch QA, reference voltage generating means (QB, Rr) generates a reference voltage (VDSB) having a voltage characteristic substantially equivalent to that of a voltage between the terminals of the semiconductor switch QA being connected to a predetermined load. Detecting means CMP1 detects a difference between the voltage (VDSA) between the terminals of the semiconductor switch QA and the reference voltage (VDSB). Control means which consists of the gate driver 111 amd CMP1 performs an on/off control of the semiconductor switch QA in accordance with the difference between the voltage (VDSA) between the terminals of the semiconductor switch and the reference voltage (VDSB).
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: April 24, 2001
    Assignee: Yazaki Corporation
    Inventors: Shouzou Ohshima, Mitsugu Watanabe