| 摘要 |
PROBLEM TO BE SOLVED: To easily specify a spot and to specify the spot or to display a map in the neighborhood of the spot immediately based on a new map when only the map is updated. SOLUTION: A number string constituted by combination of a number set to each zone in an area indicated by a postal code and the postal code comprising 3 to 5 digits is associated with a map data as an extended postal code. When the extended postal code is input, a map data corresponding to the input extended postal code is searched and a location on the map is specified, this specified location is set as a destination, and a route to the destination is searched and guided. When a route to be guided is searched, a starting point of the route can be set as a detected current location or a location on the map searched and specified by input of a new extended postal code. |
