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公开(公告)号：US11546363B2
公开(公告)日：2023-01-03
申请号：US16897853
申请日：2020-06-10
发明人： Tomoyuki Haga , Yuishi Torisaki , Hiroyasu Terazawa , Ryo Kato
IPC分类号： H04L9/40 , H04L12/40 , B60R16/023 , G06F11/34 , H04L67/12
摘要： 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：US11178013B2
公开(公告)日：2021-11-16
申请号：US16734439
申请日：2020-01-06
发明人： Hiroyasu Terazawa , Tomoyuki Haga , Yuishi Torisaki , Ryo Kato , Yoshihiro Ujiie
IPC分类号： H04L12/24 , H04W4/48 , H04L12/911
摘要： Provided is a network monitor for a mobility network used in a mobility entity. The mobility network is formed of a source unit, a destination unit, and one or more repeaters. Each repeater includes a network monitor that receives, from the source unit, an announcement for a bandwidth reservation. The announcement includes a value of a first bandwidth requirement for the source unit to perform first data communication. The network monitor further determines a determination result of whether to reserve the first bandwidth by comparing the value of the first bandwidth with a range of values of a second bandwidth for the first data communication specified in a white list stored in a database. The network monitor reserves the first bandwidth for performing the first data communication depending on the determination result, and transmits, to the source unit, a reservation status of the first bandwidth.
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公开(公告)号：US11539727B2
公开(公告)日：2022-12-27
申请号：US16730977
申请日：2019-12-30
发明人： Tomoyuki Haga , Masato Tanabe , Yuishi Torisaki , Hiroyasu Terazawa , Ryo Kato
摘要： An abnormality detection apparatus for a mobility entity and for detecting an abnormality in a network system is provided. The network system includes a first network and a second network that use different communication protocols. A first communication circuit receives state information indicating a state of the mobility entity. The state information is acquired from the second network. A second communication circuit transmits and receives a first frame according to a communication protocol used in the first network. A memory stores an abnormality detection rule. A processor detects, based on the state information and the abnormality detection rule, whether a control command included in the first frame received by the second communication circuit is abnormal. In a case where the control command is abnormal, the processor prohibits the control command from being transmitted.
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公开(公告)号：US11553484B2
公开(公告)日：2023-01-10
申请号：US17129012
申请日：2020-12-21
发明人： Yoshihiro Ujiie , Yuishi Torisaki , Tomoyuki Haga , Hiroyasu Terazawa , Ryo Kato
摘要： 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：US11436471B2
公开(公告)日：2022-09-06
申请号：US16149254
申请日：2018-10-02
发明人： Naohisa Nishida , Yuji Unagami , Tatsumi Oba , Ryo Kato , Shota Yamada , Nuttapong Attrapadung , Tadanori Teruya , Takahiro Matsuda , Goichiro Hanaoka
摘要： A method of obtaining a shared prediction model is provided. The method includes: obtaining a prediction model as a neural network; converting each negative numerical value in a plurality of parameters included in the prediction model to a positive numerical value to obtain a converted prediction model; and sharing the converted prediction model by a secret sharing method to obtain shared prediction models while concealing an input data.
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6.发明授权公开(公告)号：US11438355B2
公开(公告)日：2022-09-06
申请号：US16818364
申请日：2020-03-13
发明人： Hiroyasu Terazawa , Tomoyuki Haga , Yuishi Torisaki , Ryo Kato
IPC分类号： H04L29/06 , H04L12/40 , H04L29/08 , B60R16/023 , B62D5/04 , B60T17/22 , B60L3/00 , H04L9/40 , H04L67/12
摘要： 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：US11818024B2
公开(公告)日：2023-11-14
申请号：US17240098
申请日：2021-04-26
发明人： Tomoyuki Haga , Yuishi Torisaki , Manabu Maeda , Ryo Kato
IPC分类号： H04L43/0823 , H04L43/06 , H04L67/12 , H04L69/22
CPC分类号： H04L43/0823 , H04L43/06 , H04L67/12 , H04L69/22
摘要： A statistical information generation device that generates statistical information from Ethernet frames on a mobility network includes: a transceiver that transmits and receives the Ethernet frames; and a statistical information generator that collects a plurality of Ethernet frames transmitted or received by the transceiver within a predetermined time period, and classifies, out of the plurality of Ethernet frames collected, Ethernet frames containing the same destination IP address, source IP address, destination port number, source port number, and protocol, and containing, in payloads, same identification information related to mobility control, into the same group, generates the statistical information for each group from the Ethernet frames classified into groups, and transmits the generated statistical information from the transceiver.
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公开(公告)号：US11381420B2
公开(公告)日：2022-07-05
申请号：US16734435
申请日：2020-01-06
发明人： Yuishi Torisaki , Hiroyasu Terazawa , Tomoyuki Haga , Yoshihiro Ujiie , Ryo Kato
摘要： An in-vehicle relay device prevents an anomaly of a control command exchanged over networks having different transmittable data sizes in a frame. The in-vehicle relay device relays communication between multiple control devices in a vehicle over the networks to which the control devices are connected. The in-vehicle relay device receives control data from a first control network. The control data includes, in a frame, a plurality of control commands to be executed by at least one of the control devices. The in-vehicle relay device determines, as a first determination, whether types of the control commands included in the frame form a first combination that is preset as a combination of control commands that are executable simultaneously. The in-vehicle relay device thereafter determines, as a second determination, whether the control data is anomalous by using the result of the first determination, and outputs the result of the second determination.
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公开(公告)号：US10904883B2
公开(公告)日：2021-01-26
申请号：US16380447
申请日：2019-04-10
发明人： Yoshihiro Ujiie , Yuishi Torisaki , Tomoyuki Haga , Hiroyasu Terazawa , Ryo Kato
摘要： 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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