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公开(公告)号:US20230216873A1
公开(公告)日:2023-07-06
申请号:US18116152
申请日:2023-03-01
Inventor: Yasushi MURAKAWA , Akira KAMOGAWA , Seiichi MUROYA , Hiroyasu TERAZAWA
IPC: H04L9/40
CPC classification number: H04L63/1425 , H04L63/1458 , H04L63/1416
Abstract: A detection system includes an obtainer that obtains a first log, the first log being a log of communication in a first network; a determiner that determines whether the first log obtained by the obtainer includes anomaly information indicating anomalous communication in a second network; and a controller that, when the determiner has determined that the first log includes the anomaly information, performs control of notifying of an anomaly in the second network.
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公开(公告)号:US20200304532A1
公开(公告)日:2020-09-24
申请号:US16897853
申请日:2020-06-10
Inventor: Tomoyuki HAGA , Yuishi TORISAKI , Hiroyasu TERAZAWA , Ryo KATO
IPC: H04L29/06 , H04L12/40 , B60R16/023 , H04L29/08 , G06F11/34
Abstract: An anomaly detection device for detecting anomaly in frames flowing through an in-vehicle network system includes: an obtainer that obtains one or more frames; a first holder holding a first rule defining a rule indicating that when a frame satisfies a first condition based on a source or a destination, the frame is to be transferred; a first frame controller that transfers the one or more frames in accordance with the first rule; a second holder holding a second rule defining a rule indicating that a frame satisfying a second condition is to be determined as being anomalous; and a second frame controller that performs, in accordance with the second rule, an anomaly detection process on each of the one or more frames transferred by the first frame controller. When an anomalous frame is detected, the second frame controller provides or stores a detection result.
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公开(公告)号:US20210153194A1
公开(公告)日:2021-05-20
申请号:US17129012
申请日:2020-12-21
Inventor: Yoshihiro UJIIE , Yuishi TORISAKI , Tomoyuki HAGA , Hiroyasu TERAZAWA , Ryo KATO
Abstract: A communication device is a communication device connected to a mobility network which is a network mounted in a mobility and which is used by a plurality of electronic control devices for communication. The communication device includes: a holding unit which holds range information indicating a transferable path range determined for a message on the mobility network; a receiving unit which receives the message on the mobility network; and a determining unit which determines validity of the received message by using the range information.
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公开(公告)号:US20200220888A1
公开(公告)日:2020-07-09
申请号:US16818364
申请日:2020-03-13
Inventor: Hiroyasu TERAZAWA , Tomoyuki HAGA , Yuishi TORISAKI , Ryo KATO
Abstract: An anomaly detection system is on an in-vehicle network including: a first network connected to first devices that communicate using a first protocol; and a second network connected to second devices that includes a driving assistance controller communicates using a second protocol. The system includes: a communicator receiving, through the first network, first unit data including (i) source information indicating a source first device and (ii) second unit data including a data identifier; a database storing rule; and an anomaly determiner that determines whether the first unit data has anomaly by comparing the source information and the data identifier with the rule. Based on the rule, the first unit data is determined to have anomaly when the source first device is a sensing device and, according to the identifier, the second unit data is to be received by the controller.
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公开(公告)号:US20230336576A1
公开(公告)日:2023-10-19
申请号:US18211941
申请日:2023-06-20
Inventor: Yusuke SUZUKI , Moe YOSHIDA , Hiroyasu TERAZAWA , Seiichi MUROYA , Toshimasa TAKAKI
IPC: H04L9/40
CPC classification number: H04L63/1425
Abstract: A threshold value calculation device includes: a device state acquirer that acquires a device state of a first device provided in a facility in which a home network is installed during a first period; an occupancy state determiner that determines an occupancy state by people in the facility during the first period based on information acquired from a second device in the facility; a communication log collector that collects a communication log; and a learner that calculates a threshold value for the communication transmitted and received by the first device during a second period that is a period after the first period. The learner calculates the threshold value for each of combinations of one or more states of the first device and one or more states of the people.
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公开(公告)号:US20190239221A1
公开(公告)日:2019-08-01
申请号:US16380447
申请日:2019-04-10
Inventor: Yoshihiro UJIIE , Yuishi TORISAKI , Tomoyuki HAGA , Hiroyasu TERAZAWA , Ryo KATO
CPC classification number: H04W72/0446 , H04L12/28 , H04L12/40 , H04L12/66 , H04W8/02
Abstract: A communication device is a communication device connected to a mobility network which is a network mounted in a mobility and which is used by a plurality of electronic control devices for communication. The communication device includes: a holding unit which holds range information indicating a transferable path range determined for a message on the mobility network; a receiving unit which receives the message on the mobility network; and a determining unit which determines validity of the received message by using the range information.
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