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Navigation apparatus for a vehicle

  • US 5,935,191 A
  • Filed: 11/07/1995
  • Issued: 08/10/1999
  • Est. Priority Date: 11/08/1994
  • Status: Expired due to Fees
First Claim
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1. A navigation apparatus comprising:

  • X-directional acceleration detecting means for detecting an acceleration in a vehicle running direction;

    yaw angular velocity detecting means for detecting an angular velocity of the vehicle in a yaw motion;

    moving distance calculating means for calculating a vehicle moving distance based on only output data of said X-directional acceleration detecting means;

    moving azimuth calculating means for calculating a vehicle moving azimuth from output data of said yaw angular velocity detecting means;

    computing means for calculating a vehicle location by successively accumulating vehicle moving distance data and vehicle moving azimuth data calculated by said moving distance calculating means and said moving azimuth calculating means, respectively, on the vehicle location data obtained previously; and

    stop judge means for judging a vehicle stopping state based on a variation of the output data of said X-directional acceleration detecting means.

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