| 摘要 |
[Problem] To combine a natural coordinate system of latitude and longitude, and a social coordinate system of residential house numbers (or, in areas lacking house number designations, lot number designations), and to enable a user to freely utilize a social coordinate system in relation to the current location identified by GPS. [Solution] A navigation system for displaying map data that corresponds to a current location, wherein house numbers are displayed over buildings in the map data. This map data displays topography, maps, and buildings as contour lines, text, and graphics on coordinates that are defined in terms of latitude and longitude. In this navigation system, a display information generation unit (182) displays, on a display unit (13a), map data in accordance with the current location acquired by a current location acquisition unit (186) for acquiring the current location, and also displays house numbers in accordance with the coordinate locations of buildings. |
