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Navigation system and a route guidance data storage program

  • US 6,931,321 B2
  • Filed: 06/05/2003
  • Issued: 08/16/2005
  • Est. Priority Date: 06/14/2002
  • Status: Expired due to Fees
First Claim
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1. A navigation apparatus, comprising:

  • a storage medium; and

    a controller that;

    defines a first search criterion concerning positional information of travel routes and a second search criterion concerning travel time, the travel time comprising at least one of a desired departure time and a desired arrival time;

    searches for a route and route guidance data in accordance with the first search criterion and the second search criterion, the route and route guidance data searched based on navigation data stored outside the navigation apparatus; and

    stores the route and route guidance data onto the storage medium;

    wherein the route guidance data is less than all of the navigation data, and only includes route data concerning searched routes and time data within a predetermined guide time period such that a route may be re-searched based on the route guidance data at any time within the predetermined guide time period, the predetermined guide time period defined by at least one of the desired departure time and the desired arrival time.

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