Title: Route guidance system and route guidance method
Application Number: 200610163507 Application Date: 2006.11.29
Publication Number: 1975333 Publication Date: 2007.06.06
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01C21/34;G01C21/26;G01C21/36;G08G1/0968
Applicant(s) Name: Aisin Aw Co. Address:
Inventor(s) Name: Nakayama Takaaki;Oonishi Shino;Takeuchi Kensuke;Ka
Attorney & Agent: gaolong xin
Abstract:
    The present invention provides a route guidance system and a route guidance method whereby a vehicle can be driven along a searched route in a sure manner. The route guidance system comprises: a current-location detecting unit for detecting the current location of a self-vehicle; a route-searching processing unit for searching a searched route up to a destination based on the self-vehicle location; a guidance-intersection setting processing unit for setting a guidance intersection based on the searched route; a route guidance point setting processing unit for setting a route guidance point on the near side of a guidance intersection; a change conditions determination processing unit for calculating a route guidance region from the start to the end of route guidance based on the route guidance point and the contents of route guidance, and determining whether or not the route guidance region overlaps a predetermined intersection from the self-vehicle to the guidance intersection; and a region setting processing unit for changing the route guidance region in the event that the route guidance region overlaps with the predetermined intersection. Because the vehicle is not passing through an intersection when route guidance is being givenand, the vehicle can be driven along the searched route in a sure manner by following the route guidance.
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