Vehicle navigation system and route guidance method
First Claim
1. A vehicle navigation system provided with guidance target storing means for storing information about guidance target points, which is extracted from information about a preset route extending from a current position of a vehicle to a destination and which is based on map information, and guidance means for providing guidance on said route by voice or with display, said system comprising:
- road-between-guidance-target-points configuration determining means for determining a configuration of a road between two successive guidance target points whose information is extracted from the information stored in said guidance target storing means;
continuous guidance threshold distance setting means for setting a threshold distance for continuous guidance based on the road configuration determined by said road-between-guidance-target-points configuration determining means;
distance-between-guidance-target-points calculation means for calculating a distance between the two successive guidance target points whose information is extracted from the information stored in said guidance target storing means; and
route guidance means for providing continuous guidance through said guidance means when the calculated distance between the two successive guidance target points is shorter than the threshold distance for continuous guidance set by said continuous guidance threshold distance setting means.
1 Assignment
0 Petitions
Accused Products
Abstract
A vehicle navigation system includes a road-between-guidance-target-points configuration determining unit (9) for determining a configuration of a road between two successive guidance target points whose information is extracted from information stored in a guidance target point storing unit (8). A continuous guidance threshold distance setting unit (10) sets a threshold distance for continuous guidance based on the road configuration by using a table or the like. A distance-between-guidance-target-points calculating unit (11) calculates a distance between the two successive guidance target points. When the calculated distance between the two successive guidance target points is shorter than the set threshold distance for continuous guidance, a route guidance unit (12) provides continuous guidance for users through a guidance unit (16).
-
Citations
5 Claims
-
1. A vehicle navigation system provided with guidance target storing means for storing information about guidance target points, which is extracted from information about a preset route extending from a current position of a vehicle to a destination and which is based on map information, and guidance means for providing guidance on said route by voice or with display, said system comprising:
-
road-between-guidance-target-points configuration determining means for determining a configuration of a road between two successive guidance target points whose information is extracted from the information stored in said guidance target storing means; continuous guidance threshold distance setting means for setting a threshold distance for continuous guidance based on the road configuration determined by said road-between-guidance-target-points configuration determining means; distance-between-guidance-target-points calculation means for calculating a distance between the two successive guidance target points whose information is extracted from the information stored in said guidance target storing means; and route guidance means for providing continuous guidance through said guidance means when the calculated distance between the two successive guidance target points is shorter than the threshold distance for continuous guidance set by said continuous guidance threshold distance setting means. - View Dependent Claims (2, 3, 4)
-
-
5. A route guidance method comprising the steps of:
-
storing information about guidance target points placed on a route extending from a current position of a vehicle to a destination; determining a configuration of a road between two successive guidance target points, whose information is extracted from said stored information; setting a threshold distance for continuous guidance based on the determined road configuration; calculating a distance between the two successive guidance target points; and providing continuous guidance when the calculated distance between the two successive guidance target points is shorter than said set threshold distance for continuous guidance.
-
Specification