Patent ID: 9209919
Filing Date: 2015-12-08
Classification: H04J

Abstract:
1. A synchronization control system which respectively comprises transmission processors in a master terminal connected to a network and in a plurality of slave terminals and which synchronizes the slave terminals with the master terminal, wherein the transmission processor of the master terminal comprises: a transmission interface which holds a data packet to be sent or received and which acquires a receiving timing for synchronization control calculation when receiving a packet for synchronization control, a timing generator which generates a constant internal timing, a sending/receiving processor which sends a synchronization request demanding packet to a particular slave terminal and sends a synchronization reply packet when receiving a synchronization request packet from the slave terminal that has received the synchronization request demanding packet, and a synchronization controller which calculates a synchronization band from the time of the receipt of the data packet and from time information added to the received data packet to determine a synchronization state and which adjusts a correction amount in accordance with the synchronization state and sends an internal timing correction command to the timing generator.