| 摘要 |
PURPOSE:To eliminate the need to update the contents of a coordinate table at all times by computing a path which connects a coordinate point sequence received through an external communication device into a form which can be processed on the vehicle side. CONSTITUTION:A controller calculates the path from a current place to a destination by the Dijkstra method or a potential method on the basis of current position data detected by a vehicle position detection part, the destination inputted from remote control keys, and road map data supplied from a memory control part. And, this path is regarded as an optimum path to generate a road map, a vehicle current position mark, on the map, and a line (broken line, dotted line, etc.) along the optimum path, and they are displayed on a liquid crystal display through a display control part. Namely, the shortest paths connecting coordinate point sequences N2 and N3 respectively are calculated on the basis of the coordinate point sequences N2 and N3 received through a display control part and displayed to a driver. Therefore, a coordinate table of link data sent by an on-vehicle navigation device and link data of the device is not necessary. |
