Patents by Inventor Chikara ARAI

Chikara ARAI 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).

  • Vehicle speed signal falsification detection apparatus, vehicle speed limiting apparatus, vehicle speed signal falsification detection method, and vehicle speed limiting method
    Patent number: 8839666
    Abstract: A vehicle speed signal falsification detection apparatus has a control unit incorporating a computer. The control unit calculates a vehicle speed according to a pulse signal proportional to the rotational speed of a drive wheel and also calculates a simulated vehicle speed according to a pulse signal proportional to the rotational speed of a driven wheel. Then, the control unit determines, on the basis of the comparison between the vehicle speed and the simulated vehicle speed, whether a vehicle speed signal has been falsified. When the control unit determines that the vehicle speed signal has been falsified, then the control unit outputs a falsification detection signal to another control unit so as to suppress the output of an engine.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: September 23, 2014
    Assignee: UD Trucks Corporation
    Inventors: Satoshi Fujii, Chikara Arai
  • VEHICLE SPEED SIGNAL FALSIFICATION DETECTION APPARATUS, VEHICLE SPEED LIMITING APPARATUS, VEHICLE SPEED SIGNAL FALSIFICATION DETECTION METHOD, AND VEHICLE SPEED LIMITING METHOD
    Publication number: 20120215428
    Abstract: A vehicle speed signal falsification detection apparatus has a control unit incorporating a computer. The control unit calculates a vehicle speed according to a pulse signal proportional to the rotational speed of a drive wheel and also calculates a simulated vehicle speed according to a pulse signal proportional to the rotational speed of a driven wheel. Then, the control unit determines, on the basis of the comparison between the vehicle speed and the simulated vehicle speed, whether a vehicle speed signal has been falsified. When the control unit determines that the vehicle speed signal has been falsified, then the control unit outputs a falsification detection signal to another control unit so as to suppress the output of an engine.
    Type: Application
    Filed: May 2, 2012
    Publication date: August 23, 2012
    Inventors: Satoshi FUJII, Chikara ARAI