摘要 |
PROBLEM TO BE SOLVED: To match make the managed by a master station device coincide with time managed by a slave station device in a radio data communication system where the master station device and the slave station device respectively manage time and the master station device and the slave station device perform data communication by radio. SOLUTION: In the master station device, a master station time managing means manages time and a time information transmission means radio-transmits information on managed time to the slave station device; in the slave station device, a slave station time managing means manages time and a time information reception means receives time information which is radio-transmitted from the master station device; and a time setting means sets time based on received time information as time managed by the slave station time managing means. |