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Vehicle position detection system

  • US 7,750,847 B2
  • Filed: 09/26/2007
  • Issued: 07/06/2010
  • Est. Priority Date: 09/29/2006
  • Status: Active Grant
First Claim
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1. A vehicle position detection system for detecting a position of a vehicle, the vehicle position detection system comprising:

  • a GPS receiving device mounted on the vehicle to receive GPS signals from a GPS satellite indicating a position of the vehicle;

    a light beacon communication device mounted on the vehicle to receive light beacon information from a light beacon arranged in front of an intersection of a road; and

    a central processing unit mounted on the vehicle to correct the position of the vehicle indicated by the GPS signals based on the light beacon information upon reception of the light beacon information by the light beacon communication device unless the vehicle travels, starting from the reception of the light beacon information by the light beacon communication device, for more than a predetermined time or a predetermined distance.

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