Vehicular navigation system and storage medium
First Claim
Patent Images
1. A vehicular navigation system comprising:
- present position detecting means for computing the present position of a vehicle;
information storing means containing area information for guidance in a direction of a road emanating from a guide branch and data necessary for the route guidance, and including direction guide phrase data corresponding to individual areas;
input means for inputting information necessary for computing a route;
route computing means for computing the route on the basis of the information input by said input means;
route information storing means for storing the information of the route, as computed by said route computing means;
output means for outputting information for route guidance; and
guidance control means for outputting the guidance information of a next guidance branch to said output means on the basis of the route, as computed by said route computing means, and the present position detected by said present position detecting means,wherein said guide control means acquires information of an angle between a road entering and a road departing a rotary branch on a route stored in said route information storing means, and a junction angle and information of changing angles of individual links forming the rotary, and outputs direction guidance information on the basis of the acquired information.
1 Assignment
0 Petitions
Accused Products
Abstract
A vehicular navigation system includes guide control facilities which acquires stored information of an angle between a road entering and a road departing a rotary branch on a route stored in route information storing means, the angle of a junction to the rotary, and information of the changing angles of individual links forming the rotary. Direction guidance is performed on the basis of this acquired information along with the present position of a vehicle, a destination, and a computed route.
-
Citations
10 Claims
-
1. A vehicular navigation system comprising:
-
present position detecting means for computing the present position of a vehicle; information storing means containing area information for guidance in a direction of a road emanating from a guide branch and data necessary for the route guidance, and including direction guide phrase data corresponding to individual areas; input means for inputting information necessary for computing a route; route computing means for computing the route on the basis of the information input by said input means; route information storing means for storing the information of the route, as computed by said route computing means; output means for outputting information for route guidance; and guidance control means for outputting the guidance information of a next guidance branch to said output means on the basis of the route, as computed by said route computing means, and the present position detected by said present position detecting means, wherein said guide control means acquires information of an angle between a road entering and a road departing a rotary branch on a route stored in said route information storing means, and a junction angle and information of changing angles of individual links forming the rotary, and outputs direction guidance information on the basis of the acquired information. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A storage medium having programs packaged therein for searching a route to a destination from a starting place to a present place and for providing guidance along the searched route, comprising the storage medium with further programs for:
-
searching a rotary guidance branch point on the route; acquiring information on an angle made between the roads entering and departing the rotary branch on the route, information on junctions in the rotary, and information on changing angles of individual links between junctions forming the rotary; and outputting direction guidance information on the basis of the acquired information of the rotary branch. - View Dependent Claims (8, 9, 10)
-
Specification