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公开(公告)号：US11838303B2
公开(公告)日：2023-12-05
申请号：US16919809
申请日：2020-07-02
Inventor： Manabu Maeda , Jun Anzai , Takeshi Kishikawa
CPC classification number: H04L63/1425 , B60R16/023 , G06F11/3013 , G06F11/3476 , H04L9/3242 , H04W4/48 , H04L12/40013
Abstract: A log generation method for generating a log of communication on an in-vehicle network includes: performing a plurality of determination processes for determining, by using different methods, whether or not a message sent to the in-vehicle network is anomalous; generating a log in accordance with results of the plurality of determination processes; and transmitting the generated log. In the generating, information items to be included in the log are determined in accordance with a combination of the results of the plurality of determination processes so that the log does not include identical information items.
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2.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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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：US10911182B2
公开(公告)日：2021-02-02
申请号：US16237327
申请日：2018-12-31
Inventor： Takeshi Kishikawa , Tatsumi Oba , Manabu Maeda
IPC: H04L1/00 , H04L1/16 , G07C5/08 , G06K9/62 , H04L1/24 , H04W40/24 , H04L12/715 , H04W76/40 , H04L9/32
Abstract: An information processing method performed by an information processing system including a storage device to process a plurality of data frames flowing in an in-vehicle network including at least one electronic control unit includes a receiving step of sequentially receiving a plurality of data frames flowing in the in-vehicle network, a frame collection step of recording, in a reception log held in the storage device, reception interval information indicating reception intervals between the plurality of data frames as frame information, a feature acquisition step of acquiring, from the reception interval information, a feature relating to distribution of the reception intervals between the plurality of data frames, and an unauthorized data presence determination step of determining the presence/absence of an unauthorized data frame among the plurality of data frames.
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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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