| 摘要 |
PROBLEM TO BE SOLVED: To enable always normally executing delivery action of navigation data between a plurality of vehicles mounting navigation systems, by responding to the response requirement from other vehicle, and automatically transmitting response. SOLUTION: A radio part 3 has a radio apparatus unit 31, a modulation/ demodulation circuit 32 and a radio antenna 33, and sends out position information and course information as a radio signal. At the time of receiving, received data are sent out to a navigation unit 12, via the radio part 3 and a GPS data communication modem part 2. Manual/automatic changeover is performed by user interface 16. By selecting the automatic operation, response (transmission of self station GPS information) after GPS information from a partner station is received is automatically once performed. In the case of manual operation, response is performed only at the time of user operation. Thereby normal navigation operation can be executed in the case of a highway or a mountain road where human handling is inevitable, so that operability and convenience are improved. |
