Driving history restoration method in in-vehicle information system and in-vehicle information system

摘要

PROBLEM TO BE SOLVED: To restore an unknown section of a traveling history generated after updating a map in an in-vehicle information system. SOLUTION: In an in-vehicle information system 1, a server 100 stores a correspondence information between a pre-update link ID in a pre-update map and a post-update link ID in a post-update map for a link ID that identifies a road on a map. It has a table 301. The server 100 converts the pre-conversion travel history 302 represented by the pre-update link ID into the post-conversion travel history 305 represented by the post-update link ID in the section of the link on which the vehicle traveled. At this time, the server 100 sets the section of the pre-conversion travel history 302 represented by the link ID for which the corresponding information does not exist as the unconverted section in the post-conversion travel history 305. When it is determined that the traveling of the unconverted section by the vehicle is completed, the in-vehicle terminal 200 weights the traveling history of the unconverted section with the accumulation weight value and accumulates it as the converted traveling history 305. [Selection diagram] Fig. 2