Patent ID: 6466869
Filing Date: 2002-10-15
Classification: G01C

Abstract:
A navigation apparatus for guiding a user to a destination by using cartographic data, said navigation apparatus comprising:a route search section being operable to search for a first route from a departure point toward the destination by using the cartographic data; a guidance data generation section being operable to generate guidance data for guiding the user toward the destination based on the first route found by said route search section and the cartographic data; an output section being operable to output the guidance data generated by said guidance data generation section, wherein said route search section further searches for a plurality of second routes from a current position of the user toward the destination when a predetermined starting condition is satisfied when the guidance data is being outputted; and a warning data generation section being operable to generate warning data for notifying the user of the plurality of second routes found by said route search section, wherein said output section further outputs the warning data generated by said warning data generation section, and the plurality of second routes are varying in course on the way from the current position of the user to the same destination as the first route, and are different from the first route.