Patent ID: 8521083

Claim:
A time synchronization system comprising: a master time transmission-reception device (master time Tx/Rx device) for receiving global standard time data from a satellite; at least one or more slave time transmission-reception devices (slave time Tx/Rx devices) for receiving time information and operation control information from the master time Tx/Rx device, displaying the time information, and transmitting time information and state information to the master time Tx/Rx device; a network management device for managing, in real-time, the master time Tx/Rx device and the slave time Tx/Rx devices; and a monitoring device for monitoring, in real-time, the operation states of the network management device, and allowing, when an error occurs in the time synchronization system, for the repair of the error in real-time via two-way interactive wireless communication, wherein the master time Tx/Rx device and the slave time Tx/Rx devices communicate information with each other via two-way interactive wireless communication.