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Method and apparatus for navigation system using routing data created by remote navigation server

  • US 20100312465A1
  • Filed: 06/09/2009
  • Published: 12/09/2010
  • Est. Priority Date: 06/09/2009
  • Status: Active Grant
First Claim
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1. A navigation method for using routing data created by a remote navigation server for a route guidance operation by an individual navigation system, comprising the following steps of:

  • sending information on a starting point and a destination point to the navigation server from the individual navigation system through a communication network;

    establishing an optimum route by the navigation server by conducting a route search algorithm on map data retrieved from a map database of the navigation server;

    determining a road type involved in the optimum route and selecting strategic road segments associated with the optimum route;

    storing data related to the selected strategic road segments while ignoring data related to road segments other than the strategic road segments;

    establishing routing data based on the data related to the strategic road segments thereby creating routing data of minimum amount of data;

    sending the routing data from the navigation server to the individual navigation system through the communication network; and

    reproducing the optimum route by the individual navigation system based on the routing data and map data retrieved from a map database of the individual navigation system.

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