Navigation system for vehicles
First Claim
1. A vehicular navigation system, comprising:
- present position detecting means for detecting the present position of a vehicle;
input means for inputting a destination;
information memory means for storing road data to be searched for determination of an optimal route;
route searching means for searching said road data to determine the optimal route to the destination;
route information converting means for calculating a road configuration from said road data for the detected present position and from road data for plural guidance points at spaced, predetermined distances in advance of the detected present position on the optimal route and for converting the calculated road configuration into visually and 3-dimensionally expressed route information according to the calculation; and
display means for outputting and displaying the route information converted by the route information converting means;
wherein said route information converting means calculates an angle between a heading for the present position of the vehicle and a heading for a position a given distance ahead from the present position of the vehicle, at a predetermined time interval, draws a road in straight line if the angle is less than a predetermined value, and draws the road in curved line if the angle is equal to or more than the predetermined value.
1 Assignment
0 Petitions
Accused Products
Abstract
The vehicular navigation system of the present invention includes a present position detector for detecting the present position of a vehicle, an input device for inputting a destination, an information memory for storing road data for searching for an optimal route, a route search system for searching for an optimal route to the destination based on the road data stored in the information memory, a route information converter for converting the route information near the present position of the vehicle to a visually 3-dimensional route information based on configuration of the road by the route search system, and a display for outputting and displaying the route information converted by the route information converter. The present position of the vehicle is detected, and the present position of the vehicle and route information ahead of the present position can be easily confirmed by detecting the present position of the vehicle and by converting the route information of the present position, based on the configuration of the road, to a 3-dimensional road display.
-
Citations
26 Claims
-
1. A vehicular navigation system, comprising:
-
present position detecting means for detecting the present position of a vehicle; input means for inputting a destination; information memory means for storing road data to be searched for determination of an optimal route; route searching means for searching said road data to determine the optimal route to the destination; route information converting means for calculating a road configuration from said road data for the detected present position and from road data for plural guidance points at spaced, predetermined distances in advance of the detected present position on the optimal route and for converting the calculated road configuration into visually and 3-dimensionally expressed route information according to the calculation; and display means for outputting and displaying the route information converted by the route information converting means; wherein said route information converting means calculates an angle between a heading for the present position of the vehicle and a heading for a position a given distance ahead from the present position of the vehicle, at a predetermined time interval, draws a road in straight line if the angle is less than a predetermined value, and draws the road in curved line if the angle is equal to or more than the predetermined value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A vehicular navigation system comprising:
-
present position detecting means for detecting the present position of the vehicle; input means for inputting information necessary for searching an optimal route; display means for displaying information for route guidance; information memory means for storing all data necessary for route guidance including guidance road data; route searching means for searching to determine a route based on the information inputted by said input means; route information memory means for storing information for the route determined by said route searching means; and guidance control means for reading, from said information memory means, advancing direction guiding information for plural guide branch points including an advancing direction at a first guide branch point for which guidance is to be next given and an advancing direction at a second guide branch point in advance of the first guide branch point, based on the route determined by the route searching means and the present position detected by said present position detecting means, for outputting information for separate display windows for each of said first and second advancing directions to said display means, and for changing the position of the display window for advancing direction guiding information at the second guide branch point, relative to position of the display window for advancing direction at the first guide branch point, in accordance with the advancing direction at the first guide branch point. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
-
Specification