| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a synchronous control system to cope with a cause of deteriorating synchronization accuracy, produced by timing flag synchronization, by synchronous control lead by a master terminal. <P>SOLUTION: The synchronous control system includes: a transmission interface unit for retaining data packets for transmission and reception, and for acquiring reception timing for synchronous control calculation when receiving a data packet for synchronous control; a timing generation unit for generating constant internal timing; transmission and reception processing unit for transmitting a synchronization request reminder packet to a specific slave terminal, and for transmitting a synchronization response packet when a synchronization request packet is received from the slave terminal that receives the synchronization request reminder packet; and a synchronous control unit for determining a synchronization state by calculating a synchronization error from a time of data packet reception and time information added to the received data packet, and for transmitting an internal timing correction order to the timing generation unit by adjusting a correction amount according to the synchronization state. <P>COPYRIGHT: (C)2013,JPO&INPIT |
