Patent ID: 11920935
Assignee: NISSAN MOTOR CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A navigation device comprising:
own vehicle position detecting means configured to detect position information of own vehicle;
a first map including information of traveling routes and a second map including information of driving lanes in the traveling routes;
matching means configured to match a detected position of the own vehicle with a position, referred to as a first own position, on the traveling route where the own vehicle travels on the first map on the basis of the first map and the position information of the own vehicle, the first own position being a predetermined region around the center of the traveling route on which the own vehicle travels, the predetermined region having a dimension dependent on the resolution of the first map;
route setting means configured to set a guidance route that guides the own vehicle from its current detected position to a destination on the basis of the first map and the position information of the own vehicle;
driving lane detecting means configured to match the current detected position of the own vehicle with a position, referred to as second own position, on a driving lane where the own vehicle travels on the second map on the basis of the second map and the position information of the own vehicle, the second own position being a predetermined region around the center of the driving lane on which the own vehicle travels, the predetermined region having a dimension dependent on the resolution of the second map;
determining means configured to determine whether the second own position is included in the first own position; and
an automatic driving control device configured to perform automatic driving on the own vehicle,
wherein when the guidance route is set and the matching means matches the first own position on the guidance route, and when the second own position is no longer included in the first own position thereafter, the matching means re-matches the first own position on the first map on the basis of the position information and the route setting means updates the guidance route, and
wherein the automatic driving control device is able to perform automatic driving on the own vehicle when the guidance route is set and the second own position is included in the first own position.