Patents by Inventor Takakazu Kato

Takakazu Kato 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).

  • Attitude angle processor and attitude angle processing method
    Patent number: 7222045
    Abstract: A posture angle processing apparatus includes a magnetic sensor, a gravitational acceleration sensor, a position information acquisition device, and a dip angle database device wherein a correlation of the absolute location and a geomagnetic dip angle at the corresponding point is stored. Based on the absolute location of the current point, a dip angle estimation and determination device reads the geomagnetic dip angle at the current point, calculates an angle formed by a horizontal plane and the magnetic vector, compares the angle formed by the magnetic vector and the horizontal plane with the geomagnetic dip angle of the current point, and outputs either a true signal or a false signal depending on the error between the angle and the geomagnetic dip angle.
    Type: Grant
    Filed: April 14, 2006
    Date of Patent: May 22, 2007
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Masakatsu Kourogi, Takeshi Kurata, Takakazu Kato, Takashi Okuma, Nobuchika Sakata
  • Attitude angle processor and attitude angle processing method
    Publication number: 20060217921
    Abstract: A posture angle processing apparatus that can obtain correct information for a posture angle comprises: a magnetic sensor, a gravitational acceleration sensor, a position information acquisition device, for obtaining the absolute location of a current point, and a dip angle database device wherein a correlation of the absolute location and a geomagnetic dip angle at the corresponding point is stored.
    Type: Application
    Filed: January 14, 2004
    Publication date: September 28, 2006
    Applicant: National Institute of Advanced Industrial Science
    Inventors: Masakatsu Kourogi, Takeshi Kurata, Takakazu Kato, Takashi Okuma, Nobuchika Sakata