Patent ID: 6266613
Filing Date: 2001-07-24
Classification: G01C,G08G

Abstract:
A navigation apparatus for a vehicle, comprising:information storage means for storing information regarding roads and intersections;present position detecting means for detecting the present position of the vehicle;destination setting means for setting a destination;enroute point setting means for setting enroute points to be passed through;route calculating means for calculating a route to the destination set by said destination setting means based on the information stored in said information storage means and the enroute points set by said enroute point setting means;route storage means for storing the route calculated by said route calculating means; androute guidance means for providing route guidance based on the route calculated by said route calculating means and the present position detected by said present position detecting means, whereinsaid route storage means stores each section of the route between enroute points,said route calculating means that performs partial route recalculation for each section between the enroute points on demand and enables a user to modify the entire route by individually retrieving and editing each stored section between the enroute points and route guidance is determined and edited individually for each section defined by a plurality of the enroute points set between a start point and the destination, such that when a user changes the original calculated route, the enroute point before the section to be edited is designated as ""ROUTE START POINT"" and the enroute point after the section to be edited is designated as ""ROUTE END POINT"", and only the edited section of the entire route is recalculated in determining the modified route.