Vehicle navigation system
First Claim
1. A vehicle location detecting system provided in a vehicle for detecting the location thereof, comprising:
- self-contained type location detecting means for calculating accumulation-type location data based on motion signals from sensors mounted on said vehicle;
satellite navigation type location detecting means for calculating satellite-type location data from satellite location data transmitted by a plurality of satellites constituting a global positioning system (GPS) navigation system;
memory means for storing accumulation-type location data calculated by said self-contained type location detecting means;
means for selecting accumulation-type location data from said memory means which is closest to said calculated satellite-type location data;
synthesizing means for calculating synthetic location data based on the selected accumulation-type location data from said memory means and said calculated satellite-type location data;
a road map memory for storing road map data;
on-road location detecting means for calculating an on-road location of said vehicle based upon said synthetic location data and said road map data; and
display means for displaying the calculated on-road location of said vehicle.
1 Assignment
0 Petitions
Accused Products
Abstract
In a vehicle location detecting system having a self-contained type location detecting section for determining the accumulation type location data, a satellite navigation type location detecting section for determining the satellite type location data from satellite navigation data, a synthesizing section calculates synthetic location data from the accumulation type location data and the satellite navigation type location data. An on-road location determining section determines an on-road location of the vehicle in accordance with the synthetic location data and road map data stored in a road map memory. A display sectin displays the on-road location determined by the on-road location determining section.
-
Citations
4 Claims
-
1. A vehicle location detecting system provided in a vehicle for detecting the location thereof, comprising:
-
self-contained type location detecting means for calculating accumulation-type location data based on motion signals from sensors mounted on said vehicle; satellite navigation type location detecting means for calculating satellite-type location data from satellite location data transmitted by a plurality of satellites constituting a global positioning system (GPS) navigation system; memory means for storing accumulation-type location data calculated by said self-contained type location detecting means; means for selecting accumulation-type location data from said memory means which is closest to said calculated satellite-type location data; synthesizing means for calculating synthetic location data based on the selected accumulation-type location data from said memory means and said calculated satellite-type location data; a road map memory for storing road map data; on-road location detecting means for calculating an on-road location of said vehicle based upon said synthetic location data and said road map data; and display means for displaying the calculated on-road location of said vehicle. - View Dependent Claims (2, 3, 4)
-
Specification