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Method and device for head tracking

  • US 20050256675A1
  • Filed: 08/26/2003
  • Published: 11/17/2005
  • Est. Priority Date: 08/28/2002
  • Status: Abandoned Application
First Claim
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1. A head-tracking method in which the three-dimensional direction the head faces is detected by three axes of a yaw angle that is an angle turning around an erect axis erected on the horizontal surface of the head, and a pitch angle and a roll angle that are angles formed by said erect axis and two axes perpendicular thereto, wherein said yaw angle is judged from the integral value of the output of a gyro sensor, and said pitch angle and said roll angle are calculated from the output of a tilt sensor which detects the inclination of a plane that intersects the direction of said erect axis at right angles.

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