Patents by Inventor Takeshi Hirochi

Takeshi Hirochi 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).

  • Brushless motor driving device
    Patent number: 7157877
    Abstract: A brushless motor driving device having a current detecting unit for detecting a phase-current of a brushless motor, a voltage detecting unit for detecting a phase voltage of the brushless motor, and a signal input portion to which the detection value of the phase-current and the detection value of the phase-voltage are input and which has plural input terminals arranged sequentially. The detection values of phase currents or detection values of phase voltages which are different in characteristic are input to adjacent input terminals.
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: January 2, 2007
    Assignee: Denso Corporation
    Inventors: Takeshi Hirochi, Toshio Tsutsui, Masahiro Miyata
  • Brushless motor driving device
    Publication number: 20050184688
    Abstract: A brushless motor driving device having a current detecting unit for detecting a phase-current of a brushless motor, a voltage detecting unit for detecting a phase voltage of the brushless motor, and a signal input portion to which the detection value of the phase-current and the detection value of the phase-voltage are input and which has plural input terminals arranged sequentially. The detection values of phase currents or detection values of phase voltages which are different in characteristic are input to adjacent input terminals.
    Type: Application
    Filed: February 8, 2005
    Publication date: August 25, 2005
    Inventors: Takeshi Hirochi, Toshio Tsutsui, Masahiro Miyata