Patents by Inventor Tomohide ICHIKAWA

Tomohide ICHIKAWA 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).

  • Valve control device and valve system
    Patent number: 10280834
    Abstract: A valve control device includes a drive circuit for supplying a drive signal to an actuator adjusting an opening degree of a valve via a prescribed transmission line, generates a PWM signal on the basis of a target opening degree supplied from the outside and a sensor signal that indicates a real opening degree of the valve, and supplies the PWM signal to the drive circuit. The valve control device includes a disconnection detection unit which detects, on the basis of the PWM signal and a monitor signal of the drive signal, whether the transmission line is disconnected.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: May 7, 2019
    Assignees: KEIHIN CORPORATION, HONDA MOTOR CO., LTD.
    Inventors: Hiroshi Ito, Takuya Yahagi, Youichiro Shikine, Tomohide Ichikawa, Kensuke Yamamoto, Akihito Inoue
  • VALVE CONTROL DEVICE AND VALVE SYSTEM
    Publication number: 20180106187
    Abstract: A valve control device includes a drive circuit for supplying a drive signal to an actuator adjusting an opening degree of a valve via a prescribed transmission line, generates a PWM signal on the basis of a target opening degree supplied from the outside and a sensor signal that indicates a real opening degree of the valve, and supplies the PWM signal to the drive circuit. The valve control device includes a disconnection detection unit which detects, on the basis of the PWM signal and a monitor signal of the drive signal, whether the transmission line is disconnected.
    Type: Application
    Filed: March 24, 2016
    Publication date: April 19, 2018
    Inventors: Hiroshi ITO, Takuya YAHAGI, Youichiro SHIKINE, Tomohide ICHIKAWA, Kensuke YAMAMOTO, Akihito INOUE