Navigation system for vehicles
First Claim
1. A navigation system for vehicles, comprisingpresent position detecting means for calculating a present position of a vehicle;
- input means for inputting information necessary for calculating a route;
display means for displaying information for route guidance;
information memory means for storing all data necessary for providing route guidance including guidance road data;
route calculating means for calculating the route based on the information inputted by said input means;
route information memory means for storing information of the route calculated by the route calculating means;
means for reading the route information stored in the route information memory means and for outputting the route information to said display means;
guidance control means for reading an advancing direction at a first guide branch point being approached and an advancing direction at a second guide branch point being approached after the first guide branch point from said route information memory means based on the route calculated by said route calculating means and the present position detected by said present position detecting means and for outputting information of the read advancing directions at the first and second guide branch points including directional arrows indicative of respective advancing directions to said display means; and
said guidance control means displaying the information of the advancing direction at the first guide branch point by partially overlapping it on the information of the advancing direction at the second guide branch point so that at least the heads of each arrow are simultaneously visible on said display means.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides a navigation system for vehicles, in which advancing direction guidance information at a first guide branch point is displayed by partially overlapping it on advancing direction guidance information at a second guide branch point, and it is possible to recognize that the information at the uppermost layer has higher priority and also to find two advancing direction guidances at the same time. The advancing direction guidance information at a second guide branch point is displayed only when there are two or more guide branch points separated from each other at shorter distance than a predetermined distance, and the driver can easily recognize that the branch points requiring guidance are located adjacent to each other and can drive the vehicle at ease and with full confidence.
139 Citations
8 Claims
-
1. A navigation system for vehicles, comprising
present position detecting means for calculating a present position of a vehicle; -
input means for inputting information necessary for calculating a route; display means for displaying information for route guidance; information memory means for storing all data necessary for providing route guidance including guidance road data; route calculating means for calculating the route based on the information inputted by said input means; route information memory means for storing information of the route calculated by the route calculating means; means for reading the route information stored in the route information memory means and for outputting the route information to said display means; guidance control means for reading an advancing direction at a first guide branch point being approached and an advancing direction at a second guide branch point being approached after the first guide branch point from said route information memory means based on the route calculated by said route calculating means and the present position detected by said present position detecting means and for outputting information of the read advancing directions at the first and second guide branch points including directional arrows indicative of respective advancing directions to said display means; and said guidance control means displaying the information of the advancing direction at the first guide branch point by partially overlapping it on the information of the advancing direction at the second guide branch point so that at least the heads of each arrow are simultaneously visible on said display means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
Specification