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Route search method, route guidance system, navigation system, and statistical processing server

  • US 8,086,403 B2
  • Filed: 02/16/2007
  • Issued: 12/27/2011
  • Est. Priority Date: 02/17/2006
  • Status: Active Grant
First Claim
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1. A navigation system to be installed in a vehicle, the system comprising:

  • a memory that stores;

    slice widths which represent predicted distances that the vehicle can travel in a predetermined time for individual zones and individual time periods; and

    traffic data that is created based on traffic circumstances in individual links and individual time periods; and

    a controller that;

    selects a plurality of the slice widths in temporal sequence for a current position of the vehicle and a current time;

    defines, based on the selected plurality of the slice widths, a plurality of predicted distance ranges in temporal sequence that are centered at the current position of the vehicle, each of the plurality of predicted distance ranges representing an area;

    searches for a recommended route from the current position of the vehicle to a destination by using the traffic data for the links that are contained with the respective predicted distance ranges for the time periods that correspond to the predicted distance ranges.

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