| 摘要 |
PROBLEM TO BE SOLVED: To easily acquire valuable information using a simple means in a navigation system. SOLUTION: Point data and comment data which are stored in data bases 5(6) by each vehicle are exchanged using communication units 7(8) between vehicles, by using an information exchange means 12. Namely, in a state where navigation systems 3(4) is started, if one vehicle passes by other vehicles or approaches in a parking lot and goes into a communicatable range with other vehicles, while travelling a town, the communication units 7(8) among vehicles perform communication with the communication units 8(7) of other vehicles. When a connection is established in this communication, each of the navigation systems 3(4) mutually exchanges the data in mutual data bases 5(6) which each system has. COPYRIGHT: (C)2007,JPO&INPIT |
