COMPARISON MONITORING SYSTEM AND COMPARISON MONITORING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a comparison monitoring system and a comparison monitoring method which compare and monitor certain correlation among correlated data rows even when the appearance order and the transmission frequency of the data changes.;SOLUTION: A check code is calculated from the contents of the data obtained by monitoring probe devices 20 and 30. When the value of the check code is different from the check code generated right before, comparison information containing the check code and the time stamp of the data is transmitted to a comparison device 40, which compares the comparison information received respectively from the monitoring probe devices 20 and 30 and outputs an alert when a difference is found in the comparison information. Thus, when the same check code continues, namely when the same data are received consecutively, no comparison processing is done, so correlation among data streams can be compared and monitored ignoring a difference in the transmission frequency of the data.;COPYRIGHT: (C)2012,JPO&INPIT