Synchronization system using IEEE1394

Synchronization system using IEEE1394 for synchronizing between the nodes in a network connected using IEEE1394, such that the synchronization system comprising: a) a cycle timer delay measuring unit for measuring a mutual delay deviation amount every cycle timer, which is used by each node in possession; and b) a cycle timer delay correction unit for correcting the mutual delay deviation of each cycle time based on the time measured by the cycle timer delay measuring unit delay deviation amount, characterized, in that the cycle timer delay measurement unit is adapted to transfer c) a read packet (from a request node N1) to a responder node (N2); read d) the cycle timer value of the response node (N2); and e) if the request node (N1) receives a read response packet including this read cycle timer value, to calculate the delay deviation amount, based on the difference between the received cycle timer value and the cycle timer value of the request node (N1), f) wherein the requesting node (N1) includes a judging unit for judging whether a number of the sequence of the transmission of the read packet ...