| 摘要 |
PROBLEM TO BE SOLVED: To securely synchronize between a master device and each slave device and between slave devices, by transmitting a variety of operation execution times using a network clock value from the master device to each slave device to implement a low-cost radio network.SOLUTION: A master device 10 and each slave device 20 shares a network clock of a radio network as a synchronization source. The master device 10 transmits an operation start time to each slave device 20 as an operation start count value converted by use of the network clock. Each slave device monitors the count value of the network clock counter of the self-device, to execute predetermined operation when the count value becomes coincident with the operation start count value, so as to transmit the execution result thereof to the master device at predetermined timing. |
