| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent deviation of synchronization between a master node and a slave node in a network in which the master node and the slave node are connected by a communication bus, without increasing the bus load of the communication bus. <P>SOLUTION: Detection means formed by a time stamp processing unit 18 in a master side of the ECU 1 in a master node detects a change in a load situation of a slave node side including a communication bus 3; and update means formed by the time stamp processing unit 18 in the master side calculates and updates an offset time of the ECU 1 of the master node, in time with timing of a change in the offset time, that is time necessary for information sent by either one of the master node or the slave node to reach to the other, after the detection means has detected a change of the load situation of the slave node side and the load situation of the slave node side including the communication bus 3 has changed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
