| 摘要 |
PROBLEM TO BE SOLVED: To accurately relate a digital map to a position on the basis of a small amount of received data. SOLUTION: A navigation system 1 receives traffic information from a traffic information reception part 20. When there is only one combination where the distance between a position indicated by position information indicated only by coordinates (latitude and longitude) included in received service area information and the position of a service area stored in a map DB 51 is equal to or less than a threshold value, the navigation system 1 performs the processing of relating both service areas to each other as they are the same one. COPYRIGHT: (C)2010,JPO&INPIT |
