NAVIGATION DEVICE, ROUTE SETTING METHOD, ROUTE SETTING PROGRAM, AND INFORMATION RECORDING MEDIUM ON WHICH THE ROUTE SETTING PROGRAM IS RECORDED

摘要

Data recorded in a navigation apparatus can be partially updated, and, even when a difference is caused between the versions of spot searching data and map displaying data due to the partial updating, route setup is performed with certainty. When a spot to be a destination is designated by a user, a navigation apparatus 100 determines whether the version of a map file MPF recorded on a HD drive 105 matches the version of the spot searching file RF-k corresponding to the spot. If the versions of the two files MPF and RF-k are determined to match, a system control unit 115 sets a route, on the basis of the POI data of the spot contained in the spot searching file RF-k. If the versions are determined not to match, the system control unit 115 extracts the link ID corresponding to the road closest to the spot from the map file MPF, and sets a route, using the link ID.