Patent ID: 7920964

Claim:
A navigation apparatus, comprising: a map data obtaining unit that obtains map data; a navigation processing unit that executes navigation processing by using the map data having been obtained; a search data obtaining unit that obtains search data; a specific data detection unit that detects specific data for a specified search target by using the search data having been obtained; a correspondence table obtaining unit that obtains a correspondence table indicating correspondence between identification information used to identify individual road units into which each road is divided in predetermined units and map data road unit information related to map data road units defined in the map data individually corresponding to the road units; and a map position determining unit that determines a position of the specified search target in the map data based upon the specific data for the specified search target having been detected and the correspondence table having been obtained, wherein: the identification information includes road inherent information assigned permanently to each road unit to identify each road unit; the specific data corresponding to each of various search targets, which are included in the search data, contain the identification information used to identify a road unit at which the search target is located; and the map position determining unit obtains the map data road unit information from the correspondence table having been obtained, which corresponds to the identification information contained in the specific data for the specified search target having been detected, and identifies the map data road unit in the map data based upon the map data road unit information having been obtained.