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公开(公告)号：US10137862B2
公开(公告)日：2018-11-27
申请号：US15868663
申请日：2018-01-11
Inventor： Tomoyuki Haga , Hideki Matsushima , Manabu Maeda , Yuji Unagami , Yoshihiro Ujiie , Takeshi Kishikawa
Abstract: An anti-fraud method for use in an in-vehicle network system including a plurality of electronic control units that exchange, in an in-vehicle network, data frames, each having added thereto a message authentication code (MAC). The method includes generating a first MAC by using a MAC key and a value of a counter that counts a number of times a data frame having added thereto a MAC is transmitted to the in-vehicle network. The method also includes performing verification that the data frame received has added thereto the generated first MAC and incrementing a number of error occurrences when the verification has failed for the data frame, the data frame including a predetermined ID. When the number of error occurrences exceeds a predetermined threshold, a process associated in advance with the predetermined ID is executed.
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公开(公告)号：US12292954B2
公开(公告)日：2025-05-06
申请号：US18609846
申请日：2024-03-19
Inventor： Yoshihiro Ujiie , Hideki Matsushima , Makoto Fujiwara
Abstract: An authentication method is used by an automated driving system that includes a vehicle and an external device, the external device communicating with the vehicle to cause the vehicle to implement automated driving. The vehicle holds a first certificate that certifies validity of the vehicle. The external device holds a second certificate that certifies validity of the external device. The authentication method includes: validating a third certificate that certifies validity of a combination of the vehicle and the external device, in accordance with a result of device authentication performed between the vehicle and the external device by reference to the first certificate and the second certificate.
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公开(公告)号：US11463275B2
公开(公告)日：2022-10-04
申请号：US17233088
申请日：2021-04-16
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 first-type frame includes first information serving as a base for the second-type frame to be transmitted to the second network, and second information indicating that the first-type frame includes information that is to be transmitted to the second network. The ECU includes a generator that generates the first-type frame following the first communication protocol, and a transmitter that transmits, to the first network, the first-type frame generated by the generator.
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44.发明授权公开(公告)号：US11425128B2
公开(公告)日：2022-08-23
申请号：US17039107
申请日：2020-09-30
Inventor： Takeshi Kishikawa , Manabu Maeda , Tohru Wakabayashi , Toshihisa Nakano , Hideki Matsushima
IPC: H04L9/40 , B60R16/023 , H04L12/40 , H04L67/125 , H04L67/12
Abstract: A method for use in a network system is provided. The network system includes a plurality of electronic controllers that transmits and receives, via a network, a plurality of frames. The plurality of frames includes at least one control frame that instructs predetermined control to an object of control. The method receives, sequentially, the plurality of frames from the network, and determines whether the predetermined control, instructed by the control frame received in the receiving, is to be suppressed, based on a set of frames received in the receiving. The set of frames is received in the receiving within a predetermined period preceding a time of reception of the control frame.
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公开(公告)号：US11368338B2
公开(公告)日：2022-06-21
申请号：US16929918
申请日：2020-07-15
Inventor： Tomoyuki Haga , Manabu Maeda , Takamitsu Sasaki , Hideki Matsushima
Abstract: A network system includes a first network through which a frame of a first type is transmitted in accordance with a first communication protocol and includes a second network in which a frame of a second type is transmitted in accordance with a second communication protocol. A gateway device is connected to the first network and the second network. The gateway device sequentially receives frames of the first type from the first network and determines whether to transmit data regarding the received frames of the first type to the second network. The gateway device transmits, to the second network, a frame of the second type including data regarding a plurality of the frames of the first type determined to be transmitted to the second network when a condition relating to a number of frames of the first type received by the gateway device is satisfied.
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Patent Agency Ranking
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：US11223525B2
公开(公告)日：2022-01-11
申请号：US16915187
申请日：2020-06-29
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 device connected to a network used in communication by multiple electronic control units provided on-board a vehicle. The gateway device performs operations including receiving firmware update information that includes updated firmware for one electronic control unit among the electronic control units, and acquiring system configuration information indicating a function of each of the electronic control units connected to the network. The gateway device further performs a controlling operation to update firmware of the one electronic control unit, for which updated firmware is received by the receiving, on a basis of the updated firmware, after an operation verification of the updated firmware is performed in an operating environment appropriately. The operating environment being configured with electronic control units of the same functions as each of the electronic control units indicated by the system configuration information.
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公开(公告)号：US11210748B2
公开(公告)日：2021-12-28
申请号：US16287300
申请日：2019-02-27
Inventor： Yuji Unagami , Hideki Matsushima
IPC: G06Q50/06 , G06F1/28 , G06Q20/38 , H02J3/32 , H02J13/00 , G07F15/00 , G06Q20/08 , G06Q20/14 , H02J3/38 , H04L29/06
Abstract: Provided is a control method including: receiving, from first power equipment, first transaction data including, for example, transmitted power amount information indicating the amount of power transmitted to power accumulation equipment; obtaining, from the power accumulation equipment, received power information including, for example, received power amount information indicating the amount of power received from the first power equipment; verifying the first transaction data by referring to the received power information; executing a first consensus algorithm with second servers when the first transaction data is verified successfully; and recording a block including the first transaction data in a distributed ledger of a first server when the validity of the first transaction data is verified through the first consensus algorithm.
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公开(公告)号：US10974669B2
公开(公告)日：2021-04-13
申请号：US16664192
申请日：2019-10-25
Inventor： Tomoyuki Haga , Toshihisa Nakano , Jun Anzai , Hideki Matsushima , Yoshihiro Ujiie , Yuji Unagami
IPC: H04L9/32 , B60R16/023 , H04L12/40 , H04L12/46 , H04L12/66
Abstract: A gateway connected to a bus, a bus, and the like used by a plurality of electronic control units for communication includes a frame communication unit that receives a frame, a transfer control unit that removes verification information used to verify a frame from the content of the frame received by the frame communication unit and transfers the frame to a destination bus or that adds verification information to the content of the frame and transfers the frame to the destination bus, and the like.
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公开(公告)号：US10956555B2
公开(公告)日：2021-03-23
申请号：US16040648
申请日：2018-07-20
Inventor： Yuji Unagami , Motoji Ohmori , Hideki Matsushima
Abstract: Provided is a management system including vehicles and authentication servers. A vehicle includes a communication circuit, multiple electronic control units connected to an in-vehicle network, a detection circuit, and a transaction data generating circuit. The detection circuit detects a replacement of one or more electronic control units. The transaction data generating circuit generates transaction data including an identifier that uniquely identifies each of the replaced electronic control units. An authentication server includes a communication circuit, and a verifying circuit that verifies validity of the transaction data obtained by the vehicle. The authentication server also includes a recording circuit that, upon verifying that the first transaction data is valid by the verifying unit, records the transaction data in a recording device.
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