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31.发明授权公开(公告)号：US11636196B2
公开(公告)日：2023-04-25
申请号：US17122659
申请日：2020-12-15
Inventor： Takeshi Kishikawa , Yoshihiro Ujiie , Manabu Maeda , Hideki Matsushima , Hiroshi Amano , Toshihisa Nakano
Abstract: A misuse detection method used in an electronic control unit in a vehicle network system including multiple electronic control units that communicate with one another through networks. The misuse detection method includes receiving a target data frame at one time point, and receiving a reference data frame at another time point different than the one time point. The misuse detection method further includes performing, as misuse detection for the target data frame based on a certain rule specifying a reception interval between the one time point at which the target data frame is received and the other time point at which the reference data frame is received, and determining the target data frame received is for misuse based on a length of the reception interval.
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32.发明授权公开(公告)号：US11356475B2
公开(公告)日：2022-06-07
申请号：US16255697
申请日：2019-01-23
Inventor： Yoshihiro Ujiie , Jun Anzai , Hideki Matsushima , Tomoyuki Haga
Abstract: A frame transmission prevention apparatus connected to a network of a network system including a plurality of electronic control units communicating with one another via the network is provided. The apparatus includes a processor and a memory. The memory includes at least one set of instructions that causes the processor to perform processes when executed by the processor. The processes include receiving a first frame from the network and switching whether to perform a first process for preventing transmission of the first frame on the basis of management information indicating whether prevention of transmission of a frame is permitted if the first frame satisfies a first condition.
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公开(公告)号：US11018897B2
公开(公告)日：2021-05-25
申请号：US16872881
申请日：2020-05-12
Inventor： Takamitsu Sasaki , Tomoyuki Haga , Manabu Maeda , Hideki Matsushima
Abstract: An electronic control unit connected to a bus of a first network where first-type frames are transmitted following a first communication protocol and a second network where second-type frames are transmitted following a second communication protocol in an onboard network system. The electronic control unit sequentially receives the first-type and the second-type frames from the bus and the second network respectively, and stores in first and second reception buffers, respectively. The electronic control unit sequentially generates first-type data and second-type data by referencing the contents of the first reception buffer and the second reception buffer, and stores the first-type and second-type data in first and second transmission buffers, respectively. The first-type data is traveling control data for a vehicle, and the second-type data is other data. The first-type or second-type data that is priority type data is transmitted with priority.
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公开(公告)号：US11012514B2
公开(公告)日：2021-05-18
申请号：US16891644
申请日：2020-06-03
Inventor： Takamitsu Sasaki , Tomoyuki Haga , Manabu Maeda , Hideki Matsushima
Abstract: A hub is connected to first and second networks where first-type and second-type frames are transmitted following first and second communication protocols. The hub sequentially receives each of the first-type and second-type frames, and stores data in first and second reception buffers. If the destination of data stored in the first and second reception buffers is the first network, the hub stores the data in a first transmission buffer. If the destination is the second network, the hub stores the data in a second transmission buffer. If the first transmission buffer is a priority transmission buffer, the hub transmits priority data in the first transmission buffer with priority over non-priority data in the second transmission buffer, which is a non-priority transmission buffer.
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公开(公告)号：US11012255B2
公开(公告)日：2021-05-18
申请号：US16785040
申请日：2020-02-07
Inventor： Manabu Maeda , Tomoyuki Haga , Takamitsu Sasaki , Hideki Matsushima
Abstract: An electronic control unit (ECU) is provided. The ECU is connected to a first network in an onboard network system. The onboard network system includes the first network and a second network. In the first network, first-type frames are transmitted following a first communication protocol. In the second network, second-type frames are transmitted following a second communication protocol. The ECU generates first-type frames following the first communication protocol, and transmits the generated first-type frames to the first network. The ECU receives external information indicating state information of a device on the onboard network system received from another electronic control unit connected to the first network or the second network, or receives external information indicating information received from a communication module configured to communicate with the server via an external network.
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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：US10735260B2
公开(公告)日：2020-08-04
申请号：US15878787
申请日：2018-01-24
Inventor： Manabu Maeda , Hideki Matsushima , Tomoyuki Haga , Yoshihiro Ujiie , Takeshi Kishikawa
IPC: H04L12/24 , B60R16/023 , G06F11/00 , B60R16/02 , G06F11/36 , G06F8/654 , G06F8/71 , H04L12/46 , H04L12/40 , H04L12/66
Abstract: A gateway connected to a bus used for communication by a plurality of ECUs provided on-board a vehicle is provided with: an external communication unit that receives, from a server external to the vehicle, firmware update information that includes updated firmware for one ECU from among the plurality of ECUs; an ECU information acquiring unit that acquires system configuration information indicating the type of each of the plurality of ECUs connected to the bus; and a FW update processing unit that performs a controlling operation to update firmware of the relevant ECU based on the updated firmware, after an operation verification of the updated firmware is performed using an ECU of each type indicated by the system configuration information.
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公开(公告)号：US10715600B2
公开(公告)日：2020-07-14
申请号：US16188330
申请日：2018-11-13
Inventor： Takamitsu Sasaki , Tomoyuki Haga , Manabu Maeda , Hideki Matsushima
Abstract: A hub is connected to first and second networks where first-type and second-type frames are transmitted following first and second communication protocols. The hub sequentially receives each of the first-type and second-type frames, and stores data in first and second reception buffers. If the destination of data stored in the first and second reception buffers is the first network, the hub stores the data in a first transmission buffer. If the destination is the second network, the hub stores the data in a second transmission buffer. If the first transmission buffer is a priority transmission buffer, the hub transmits first yet-to-be-transmitted data in the first transmission buffer with priority. If the second transmission buffer is the priority transmission buffer, the hub transmits second yet-to-be-transmitted data in the second transmission buffer with priority.
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公开(公告)号：US10601607B2
公开(公告)日：2020-03-24
申请号：US16166361
申请日：2018-10-22
Inventor： Manabu Maeda , Tomoyuki Haga , Takamitsu Sasaki , Hideki Matsushima
Abstract: An electronic control unit (ECU) is provided. The electronic control unit is connected to a first network in an onboard network system. The onboard network system includes the first network and a second network. In the first network, first-type frames are transmitted following a first communication protocol. In the second network, second-type frames are transmitted following a second communication protocol. The electronic control unit generates first-type frames following the first communication protocol, and transmits the generated first-type frames to the first network. The first-type frame includes first information and second information. The first information serves as a base for a second-type frame to be transmitted to the second network. The second information indicates information that the first-type frame is to be transmitted to the second network.
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公开(公告)号：US10372903B2
公开(公告)日：2019-08-06
申请号：US15381498
申请日：2016-12-16
Inventor： Yoshihiro Ujiie , Hideki Matsushima , Tomoyuki Haga , Yuji Unagami , Takeshi Kishikawa
Abstract: Provided is a fraud detection rule updating method enabling the updating of rules that serve as the basis for detecting malicious frames as necessary in an on-board network system. In an on-board network system equipped with multiple electronic control units (ECUs) that communicate via buses and fraud detecting ECUs that determine, based on fraud detection rules, whether messages transmitted on the buses conform to the rules, a fraud detection rule updating method is used in which delivery data including updated fraud detection rules is received from a server external to the on-board network system, and if a certain update condition is satisfied, the fraud detection rules in a fraud detecting ECU are updated to the updated fraud detection rules.
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