| 摘要 |
PROBLEM TO BE SOLVED: To allow a driver to obtain the information of a radio beacon even when a vehicle stops before a position just under a radio beacon in the communication area of the radio beacon. SOLUTION: When a vehicle enters the communication area of a radio beacon, the measurement of a lapse time t in the communication area is started by a timer (S220). The reception processing of the radio beacon signal is operated (S230), and whether or not the validation of the radio beacon data is requested by manual setting is judged (S240), and when any manual setting is not performed, whether or not the lapse time t is beyond a prescribed time T is judged (S250). When the manual setting is performed, or when the lapse time t is beyond the prescribed time T, so long as the radio beacon data are data received for the first time in the communication area or the radio beacon data are updated data is (S270), the validation of data, that is, the transfer of information to a display device is operated (S280) so that the information can be offered to a driver even when the vehicle does not pass just under the radio beacon. |
