| 摘要 |
PROBLEM TO BE SOLVED: To provide a time synchronization system in which consumption of network band for time synchronization is made as small as possible and accuracy of the time synchronization is enhanced.SOLUTION: In a time synchronization system including a station device, a terminal and a user apparatus, the station device is connected with the terminal, the terminal is connected with the user apparatus, the terminal synchronizes the time managed by itself with the time managed by the station device based on the time synchronization information transmitted from the station device, transmits the time synchronization information to the user apparatus, copies the time synchronization information transmitted to the user apparatus, transmits the copied time synchronization information, as the monitoring time synchronization information, to the station device, the user apparatus synchronizes the time managed by itself with the time managed by the terminal based on the time synchronization information thus received, and then the station device determines whether or not the time managed by the terminal is synchronized with the time managed by itself, based on the monitoring time synchronization information thus received.SELECTED DRAWING: Figure 7 |
