| 摘要 |
PROBLEM TO BE SOLVED: To search for an appropriate path without consuming a lot of memory resources when a setting point is present in an area where a connection road is located. SOLUTION: The navigation system comprises a data-recording section for storing data at the periphery of a specific area and road data, a point judgment section for judging whether a current location or a destination is present within the specific area or not, a road acquisition section for acquiring a road connected to the specific area based on data at the periphery of the specific area and road data, and a routing section for searching a path including the acquired road. |
