Navigation system for vehicles

Details Navigation system for vehicles Navigation system for vehicles

1996-08-26

1999-07-27

Chin, Gary

Data processing: vehicles, navigation, and relative location

Navigation

Employing position determining equipment

701209, 340990, 340995, G06F16500

Patent

active

059283084

ABSTRACT:
A navigation system calculates a route from a present position of a vehicle to a destination and provides guidance based on the calculated route. When the vehicle is within a given distance from a next approaching branch point requiring guidance, branch points existing within a given distance from next approaching branch point are determined and direction information for the branch points is acquired. The acquired direction information is compared with direction information at the next approaching branch point, and a common direction information is displayed based on the result of the comparison. Also, the navigation system according to the present invention detects a name of an interchange where the vehicle is to exit from the course and a distance to said interchange based on the present position of the vehicle in case the road where the vehicle is currently driven along is an expressway or a toll road. The navigation system according to the present invention calculates a route from the present position to the destination and properly calculates and provides guidance for the expected time of arrival at the destination as the vehicle moves.

REFERENCES:
patent: 5444629 (1995-08-01), Kishi et al.
patent: 5452212 (1995-09-01), Yokoyama et al.
patent: 5452217 (1995-09-01), Kishi et al.
patent: 5687083 (1997-11-01), Kishi et al.
patent: 5729109 (1998-03-01), Kaneko et al.
patent: 5739772 (1998-04-01), Nanba et al.
patent: 5774071 (1998-06-01), Konishi et al.

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