| 摘要 |
PROBLEM TO BE SOLVED: To provide a navigator for reducing the selection error of a self-contained navigation processing method caused by depending only on the behavior of a vehicle by predicting a processing method to be performed on a next self- contained navigation processing in advance. SOLUTION: A navigator is provided with road data that are constituted by a node for indicating position coordinates, map data including connection information to the adjacent node of each node, and a plurality of types of self-contained navigation processing means 18-27 for detecting the position of a vehicle according to the behavior of the vehicle based on traveled distance and azimuth. Also, the navigator selects one or a plurality of types of processing means from the self-contained navigation processing means 18-27 according to the above behavior and displays the position of the vehicle being detected by the selected processing means 18-27 along with a map. The navigator is also provided with a prediction means 17 for predicting the form of a road for detecting the position of the vehicle next based on the map data and a selection means 16 for selecting the processing means 18-27 according to the form of the road being predicted by the prediction means 17 and the above behavior. |
