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Method for car navigating using traffic signal data

  • US 9,043,143 B2
  • Filed: 12/17/2013
  • Issued: 05/26/2015
  • Est. Priority Date: 08/21/2013
  • Status: Active Grant
First Claim
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1. A method for car navigating using traffic signal data through a vehicle navigation device, comprising:

  • obtaining data of a current position (step A);

    producing data of a plurality of routes to a destination with the current position as a standard (step B);

    calculating an expected time for arrival to a destination by using signal system data of one or two more traffic signals positioned on the produced route and data of the traffic volume by separate routes (step C);

    displaying a route feasible to the fastest arrival from among calculated estimated times of arrival in the plurality of routes (step D);

    reproducing data of the plurality of routes to the destination with the current position as a standard, if a time difference beyond a certain level generates between actual time data that shows an arrival at a randomly designated position and data that shows an expected time for arrival to the designated position, in driving on the routes (step E);

    recalculating an expected time for arrival to the destination by using signal system data of one or two more traffic signals positioned on the route produced in the step E, and the average moving speed of vehicles on the routes based on data of traffic volume by separate routes received using the Transport Protocol Experts Group (TPEG) mobile communications network (step F); and

    selecting a route feasible to the fastest arrival by using data of the expected time for arrival produced in the step F and updating data of the displayed route to the data of the selected route (step G).

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