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Route searching system, route searching server and route searching method

  • US 8,335,648 B2
  • Filed: 12/12/2008
  • Issued: 12/18/2012
  • Est. Priority Date: 12/12/2008
  • Status: Active Grant
First Claim
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1. A route-searching system having route-searching network data memory means for storing transportation network data made of nodes and links connecting the nodes, point setting means for setting a departure point and a destination point, and route-searching means for searching for a route from the departure point to the destination point using the transportation network data, the route-searching system characterized in thatthe route-searching system comprises time zone data memory means for storing time zone information which is associated with the nodes constituting the transportation network and to which the nodes belong;

  • reference-time time table data memory means for storing reference-time time table data which is time table data of a transportation system, and which is created using a predetermined reference time irrespective of the time zone to which the node belongs;

    time zone determination means for determining the time zone to which the departure point or the destination point belongs; and

    time conversion means, whereinthe route-searching means searches for a route from the departure point to the destination point on the basis of the transportation network data and the reference-time time table data; and

    the time conversion means converts the time data of the searched route into guidance route data on the basis of the time zone to which the departure point or the destination point belongs.

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