Information controller, information control system, and information control method
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United States of America Patent
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Jan 23, 2018
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app pub date -
Mar 29, 2013
filing date -
Mar 29, 2013
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Abstract
The present invention detects abnormality in a control network in which a normal pattern of communication changes in accordance with the state of a control system. A normal pattern of communication between devices is stored for each state, information indicating the system state is acquired to determine the system state, and information indicating the pattern of communication between devices is acquired to determine the pattern of communication. Then, by determining, on the basis of the determined pattern of communication and the pattern of communication stored as a normal pattern of communication in the determined system state, whether system abnormality has occurred, it is possible to enhance the availability and reliability of the control network.
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