TIME MANAGEMENT DEVICE, TIME REFERENCE TIME MANAGEMENT, REFERENCE TIME MANAGEMENT SYSTEM AND REFERENCE TIME MANAGEMENT METHOD

摘要

To realize time synchronization with higher precision than PTP (Precision Time Protocol).SOLUTION: A remote device 3 connected to a local device 2 through an optical fiber 1 comprises a PTP processing unit 34 for extracting a reference time included in a packet of a time synchronization protocol distributed from the local device 2, a pulse detection unit 33 for detecting an optical pulse 12 distributed from the local device 2, and a time synchronization unit 38 for synchronizing the self-time with the reference time extracted by the PTP processing unit 34 and correcting the self-time by the time at which the pulse detection unit 33 has detected the optical pulse 12.SELECTED DRAWING: Figure 2