| 摘要 |
PROBLEM TO BE SOLVED: To provide a navigation system capable of performing excellent navigation. SOLUTION: A server unit 400 recognizes current position information and destination information sent from a terminal unit 300 over a network 200 and searches for a travel route utilizing matching data in map information. The server unit 400 sends matching mesh information including nodes and links that represent a road corresponding to the travel route, and the travel route to the terminal unit 300. The terminal unit 300 navigates a vehicle on the basis of the current position information, the matching mesh information, and information on the travel route. When the current position is off the travel route, the terminal unit 300 performs rerouting on the basis of the matching mesh information that has been acquired. If the terminal unit can not perform rerouting, the server unit 400 performs rerouting. Thus, prompt and smooth navigation based on a new travel route can be achieved. COPYRIGHT: (C)2004,JPO&NCIPI |
