Patent ID: 9097543
Filing Date: 2015-08-04
Classification: G01C

Abstract:
1. A road information update system comprising: a navigation apparatus that includes: an information center that stores a second road map data, the information center including: wherein: the navigation apparatus further includes the information center further includes the information center incorporates the new road and the abandoned road estimated by the estimation device into the second road map data; a plurality of road change models is generated by comparing a latest road map data, which has been updated most recently, with an old road map data, which was used in the past and is older than the latest road map data; each road change model comprises a set of the new road and the abandoned road at a particular cite, the new road and the abandoned road appearing due to a road change at the particular cite between the old road map data and the latest road map data; the navigation apparatus is configured to set a destination point and configured to send information on the destination point and a departure point of the movable body to the information center; the navigation apparatus is further configured to perform, by using the first road map data, a process of calculating a first route from the departure point to the destination point and a process of calculating guidance information of the calculated first route; the information center also has the first road map data and is configured to: the navigation apparatus is configured to