| 摘要 |
PROBLEM TO BE SOLVED: To enable respective group members to easily recognize the locations of the other members by carrying their own location-recognizing devices. SOLUTION: Group members are respectively make to carry a location- recognizing device 100, and its own location information acquired by a GPS receiver 112 is stored in a memory 132 and transmitted via a transmitter 122 by wireless means to all the other group members. Location position information transmitted from the other group members is received via a receiver 123, and stored in the memory 132, a map is displayed at the display of a display unit 140, based on map information preliminarily stored in the memory 132, and the location of each member is displayed to be overlapped on this map. Moreover, the predicted positions of the members at the present time are calculated and displayed from the position information of the members stored in the memory 132 via an operating part 150. |
