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公开(公告)号：US11296965B2
公开(公告)日：2022-04-05
申请号：US17201839
申请日：2021-03-15
Inventor： Yoshihiro Ujiie , Tomoyuki Haga , Manabu Maeda , Hideki Matsushima , Takeshi Kishikawa , Junichi Tsurumi , Hisashi Kashima , Yukino Toriumi , Takuya Kuwahara
IPC: H04L43/0823 , H04L12/40 , H04W4/48 , H04L41/14 , H04L29/06
Abstract: An abnormality detection method is provided. The abnormality detection method is for detecting an abnormality that may be transmitted to a bus in an on-board network system. The on-board network system includes a plurality of electronic controllers that transmit and receive messages via the bus in a mobility entity. In the abnormality detection method, for example, a gateway transmits identification information to a server and receives a response determining a unit time. An operation process is performed using feature information based on a number of messages received from the bus per the determined unit time and using a model indicating a criterion in terms of a message occurrence frequency. A judgment is made as to an abnormality according to a result of the operation process.
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公开(公告)号：US11469921B2
公开(公告)日：2022-10-11
申请号：US16798530
申请日：2020-02-24
Inventor： Junichi Tsurumi , Yoshihiro Ujiie , Toshihisa Nakano , Hideki Matsushima , Yuji Unagami
Abstract: A security device connected to a plurality of networks in a vehicle is provided. The security device determines, with regard to a frame received from a first network, whether to transmit a determination request for the frame outside the vehicle. The security device transmits the determination request outside the vehicle in a case where it is determined to transmit the determination request outside the vehicle, transmits, before obtaining a determination result from outside the vehicle in accordance with the determination request, the frame to a second network, and then obtains determination results from outside the vehicle in accordance with the determination request. The security device outputs presentation information in accordance with the determination result.
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3.发明授权公开(公告)号：US11190533B2
公开(公告)日：2021-11-30
申请号：US16237243
申请日：2018-12-31
Inventor： Junichi Tsurumi , Yoshihiro Ujiie , Takamitsu Sasaki , Takeshi Kishikawa , Tohru Wakabayashi , Toshihisa Nakano
IPC: H04L29/06 , H04L12/28 , B60R1/00 , B60R16/023 , H04L12/40
Abstract: An anomaly detection electronic control unit (ECU) that detects unauthorized messages on a communication path is provided. An ECU that periodically transmits a first-type message including data to be monitored, and an ECU that periodically transmits a second-type message including data for comparison, are connected to the communication path. The anomaly detection ECU includes: a receiver that successively receives first-type and second-type messages; a processor that determines whether a first-type message received is normal or anomalous; and a transmitter that transmits a predetermined message in accordance with results of the determining. The determining is performed based on content of the first-type message, content of a second-type message last received at the time of receiving this first-type message, and at least one of content of a first-type message received further in the past than this first-type message, and content of a second-type message received further in the past than the second-type message last received.
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Patent Agency Ranking
公开(公告)号：US10986008B2
公开(公告)日：2021-04-20
申请号：US16026040
申请日：2018-07-02
Inventor： Yoshihiro Ujiie , Tomoyuki Haga , Manabu Maeda , Hideki Matsushima , Takeshi Kishikawa , Junichi Tsurumi , Hisashi Kashima , Yukino Toriumi , Takuya Kuwahara
Abstract: An abnormality detection method is provided. The abnormality detection method is for detecting an abnormality that may be transmitted to a bus in an on-board network system. The on-board network system includes a plurality of electronic controllers that transmit and receive messages via the bus in a vehicle according to a CAN protocol. In the abnormality detection method, for example, a gateway transmits vehicle identification information to a server and receives a response determining a unit time. An operation process is performed using feature information based on a number of messages received from the bus per the determined unit time and using a model indicating a criterion in terms of a message occurrence frequency. A judgment is made as to an abnormality according to a result of the operation process.
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公开(公告)号：US12225036B2
公开(公告)日：2025-02-11
申请号：US18590182
申请日：2024-02-28
Inventor： Tomoyuki Haga , Hideki Matsushima , Manabu Maeda , Yoshihiro Ujiie , Takeshi Kishikawa , Junichi Tsurumi , Jun Anzai
Abstract: An anomaly detection server is provided. The anomaly detection server is a server for counteracting an anomalous frame transmitted on an on-board network of a single vehicle. The anomaly detection server acquires information about multiple frames received on one or multiple on-board networks of one or multiple vehicles, including the single vehicle. The anomaly detection server, acting as an assessment unit that, based on the information about the multiple frames and information about a frame received on the on-board network of the single vehicle after the acquisition of the information about the multiple frames, assesses an anomaly level of the frame received on the on-board network of the single vehicle.
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公开(公告)号：US11575699B2
公开(公告)日：2023-02-07
申请号：US17004533
申请日：2020-08-27
Inventor： Tomoyuki Haga , Hideki Matsushima , Manabu Maeda , Yoshihiro Ujiie , Takeshi Kishikawa , Junichi Tsurumi , Jun Anzai
Abstract: An anomaly detection server is provided. The anomaly detection server is a server for counteracting an anomalous frame transmitted on an on-board network of a single vehicle. The anomaly detection server acquires information about multiple frames received on one or multiple on-board networks of one or multiple vehicles, including the single vehicle. The anomaly detection server, acting as an assessment unit that, based on the information about the multiple frames and information about a frame received on the on-board network of the single vehicle after the acquisition of the information about the multiple frames, assesses an anomaly level of the frame received on the on-board network of the single vehicle.
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公开(公告)号：US11949705B2
公开(公告)日：2024-04-02
申请号：US18150898
申请日：2023-01-06
Inventor： Tomoyuki Haga , Hideki Matsushima , Manabu Maeda , Yoshihiro Ujiie , Takeshi Kishikawa , Junichi Tsurumi , Jun Anzai
CPC classification number: H04L63/1425 , G07C5/0808 , H04L12/40 , H04L63/1441 , H04L67/12 , H04W4/40 , H04W4/44 , H04L2012/40215 , H04L2012/40273 , H04W4/08
Abstract: An anomaly detection server is provided. The anomaly detection server is a server for counteracting an anomalous frame transmitted on an on-board network of a single vehicle. The anomaly detection server acquires information about multiple frames received on one or multiple on-board networks of one or multiple vehicles, including the single vehicle. The anomaly detection server, acting as an assessment unit that, based on the information about the multiple frames and information about a frame received on the on-board network of the single vehicle after the acquisition of the information about the multiple frames, assesses an anomaly level of the frame received on the on-board network of the single vehicle.
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公开(公告)号：US10798117B2
公开(公告)日：2020-10-06
申请号：US16004492
申请日：2018-06-11
Inventor： Tomoyuki Haga , Hideki Matsushima , Manabu Maeda , Yoshihiro Ujiie , Takeshi Kishikawa , Junichi Tsurumi , Jun Anzai
Abstract: An anomaly detection server is provided. The anomaly detection server is a server for counteracting an anomalous frame transmitted on an on-board network of a single vehicle. The anomaly detection server acquires information about multiple frames received on one or multiple on-board networks of one or multiple vehicles, including the single vehicle. The anomaly detection server, acting as an assessment unit that, based on the information about the multiple frames and information about a frame received on the on-board network of the single vehicle after the acquisition of the information about the multiple frames, assesses an anomaly level of the frame received on the on-board network of the single vehicle.
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