Title:
COMMUNICATION CONTROL DEVICE AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/059632
Kind Code:
A1
Abstract:
Conventional security measures are generally intended for an IT system, and it has been difficult to satisfy a real-time property and availability requested to a control system. Furthermore, since a time-division type time slot communication method is not taken into consideration, such time slot communication has problems in efficient utilization of computer resources and decrease in availability. In order to solve the above-described problems, the present invention specifies a time slot from characteristics of a communication packet received by a reception unit 133 by using a time slot characteristic storage unit 130, and selects, in accordance with the specified time slot, an inspection pattern stored in an inspection pattern storage unit 136 by using an inspection pattern selection unit 131.
Inventors:
MARUYAMA TATSUYA (JP)
MATSUMOTO NORITAKA (JP)
IWASAWA HIROSHI (JP)
ENDOH HIROMICHI (JP)
FUJITA JUNYA (JP)
MATSUMOTO NORITAKA (JP)
IWASAWA HIROSHI (JP)
ENDOH HIROMICHI (JP)
FUJITA JUNYA (JP)
Application Number:
PCT/JP2020/024603
Publication Date:
April 01, 2021
Filing Date:
June 23, 2020
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
H04L12/28; H04L12/66
Foreign References:
| JP2016163352A | 2016-09-05 | |||
| JP2019004249A | 2019-01-10 | |||
| JP2007243459A | 2007-09-20 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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