Patents by Inventor Satoshi Tamegai

Satoshi Tamegai 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).

  • Voltage detecting circuit with hysteresis characteristic and high noise immunity
    Patent number: 4558226
    Abstract: A voltage detecting circuit includes an input circuit section including a light emitting diode and a current supplying circuit for supplying a current to this light emitting diode in response to an input voltage, and an output circuit section for generating an output voltage in response to the light emitted from the light emitting diode. This output circuit section includes a phototransistor which, together with the light emitting diode constitutes a photocoupler. A characteristic between the input voltage and the output current of the current supplying circuit represents a hysteresis characteristic.
    Type: Grant
    Filed: July 6, 1983
    Date of Patent: December 10, 1985
    Assignees: Tokyo Shibaura Denki Kabushiki Kaisha, Toshiba Components Co.
    Inventors: Junji Takada, Masayuki Minamitake, Satoshi Tamegai