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公开(公告)号：US20230084009A1
公开(公告)日：2023-03-16
申请号：US17990224
申请日：2022-11-18
Inventor： Yuji UNAGAMI , Tomoyuki HAGA , Kakuya YAMAMOTO , Ayaka MITANI
Abstract: This control method, etc., are a control method for an anomalous data sensing system including at least a plurality of authentication servers and include: sensing whether data obtained from a device is not anomalous; obtaining first transaction data including information indicating the data; verifying, by a first authentication server included in the plurality of authentication servers, the first transaction data obtained, when the data is sensed as not being anomalous; and recording a block including the first transaction data into a distributed ledger when an agreement about validity of the first transaction data is reached using a consensus algorithm.
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公开(公告)号：US20230016161A1
公开(公告)日：2023-01-19
申请号：US17945752
申请日：2022-09-15
Inventor： Manabu MAEDA , Hideki MATSUSHIMA , Tomoyuki HAGA , Yuji UNAGAMI , Yoshihiro UJIIE , Takeshi KISHIKAWA
IPC: H04L9/40 , H04L12/28 , B60R16/023
Abstract: A fraud detecting method for use in an in-vehicle network system including a plurality of electronic control units that communicate with each other via a network includes detecting whether a state of a vehicle satisfies a first condition or a second condition, and switching, upon detecting that the state of the vehicle satisfies the first condition or the second condition, an operation mode of a fraud-sensing electronic control unit connected to the network between a first mode in which a first type of detecting process for detecting a fraudulent message in the network is performed and a second mode in which the first type of detecting process is not performed. Moreover, in the second mode, a second type of detecting process having a different degree to which a fraudulent message is detectible than the first type of detecting process is performed.
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公开(公告)号：US20230004959A1
公开(公告)日：2023-01-05
申请号：US17888679
申请日：2022-08-16
Inventor： Naohisa NISHIDA , Yuji UNAGAMI
Abstract: A control method is executed by a first node holding a first distributed ledger in which a first blockchain is managed, and includes: obtaining, from a second node, a second blockchain managed by a second distributed ledger held by the second node, and comparing the second blockchain with the first blockchain; updating the first blockchain by adding the greater of at least one first different block contained in the first blockchain but not the second blockchain and at least one second different block contained in the second blockchain but not the first blockchain, after at least one common block, and adding at least one additional block containing at least one instance of transaction data contained in the lesser; and determining whether at least two instances of transaction data each containing at least two instances of contract information that conflict with each other are contained in the updated first blockchain.
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公开(公告)号：US20220311629A1
公开(公告)日：2022-09-29
申请号：US17842104
申请日：2022-06-16
Inventor： Ayaka MITANI , Yuji UNAGAMI , Tetsuji FUCHIKAMI
Abstract: A control method according to the present disclosure is to be executed by a system including a distributed ledger storing a smart contract obtained by programming, in an executable manner, a determination on a medical treatment made as a result of a discussion between a patient and a physician. The control method includes: obtaining condition transaction data including biological information on the patient obtained by a sensor; obtaining opinion transaction data including information on a result of a diagnosis by the physician based on the biological information; executing the smart contract based on the biological information and the result of the diagnosis included in the condition transaction data and the opinion transaction data obtained, respectively; and outputting medical suggestion information indicating a medical treatment to be given to the patient, and obtained by executing the smart contract.
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公开(公告)号：US20220113963A1
公开(公告)日：2022-04-14
申请号：US17557402
申请日：2021-12-21
Inventor： Junji MICHIYAMA , Junichiro SOEDA , Yuji UNAGAMI , Yuuki HIROSE , Tetsuji FUCHIKAMI , Motoji OHMORI
IPC: G06F8/71
Abstract: The present disclosure provides a management method for software versions to improve transaction safety of software. In the management method, among management apparatuses, a first token management apparatus obtains request information indicating a requested version requested by a user, and first transaction data indicating that the user provides predetermined number of tokens to a software developer who has developed the requested version is stored in distributed ledgers through execution of a consensus algorithm by the management apparatuses.
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Patent Agency Ranking
公开(公告)号：US20220076359A1
公开(公告)日：2022-03-10
申请号：US17532110
申请日：2021-11-22
Inventor： Yuji UNAGAMI , Hideki MATSUSHIMA
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：US20220012958A1
公开(公告)日：2022-01-13
申请号：US17386209
申请日：2021-07-27
Inventor： Yuji UNAGAMI , Junichiro SOEDA , Motoji OHMORI
Abstract: A vehicle in a driving management system including one or more authentication servers and one or more vehicles capable of switching between a manual driving mode and an automatic driving mode is provided. The vehicle includes a communication unit that communicate with at least one authentication server of the one or more authentication servers, and a detecting unit that detects switching between the manual driving mode where manual driving is performed, and an automatic driving mode where automatic driving is performed, based on a message issued by at least one of the plurality of electronic control processors. The vehicle also includes a generating unit that generates transaction data including information indicating the detected switching, and an identifier indicating the vehicle, and transmits, to the at least one authentication server, the transaction data.
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公开(公告)号：US20210350365A1
公开(公告)日：2021-11-11
申请号：US17385131
申请日：2021-07-26
Inventor： Yuji UNAGAMI , Junji MICHIYAMA , Yuuki HIROSE , Tetsuji FUCHIKAMI , Motoji OHMORI
Abstract: A control method includes: receiving first transaction data related to a sign-up for service and storing the first transaction data received into the distributed ledger included in each of the plurality of servers, the service offering, if a goal condition predetermined for the service is satisfied, a token to a participant that is a user who signs up for the service; storing, into the distributed ledger, second transaction data indicating that the user is offered the token predetermined for the service, if it is determined that the goal condition is satisfied; and storing, into the distributed ledger, third transaction data indicating that the user is offered a deposit that is a temporary token predetermined for the service, at a predetermined timing included in a period from the storing of the first transaction data into the distributed ledger until when determination of whether the goal condition is satisfied is performed.
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公开(公告)号：US20210306365A1
公开(公告)日：2021-09-30
申请号：US17344097
申请日：2021-06-10
Inventor： Yoshihiro UJIIE , Hideki MATSUSHIMA , Tomoyuki HAGA , Manabu MAEDA , Yuji UNAGAMI , Takeshi KISHIKAWA
Abstract: A method for use in a network communication system including a plurality of electronic controllers that communicate with each other via a bus in accordance with a Controller Area Network (CAN) protocol determines whether or not content of a predetermined field in a frame which has started to be transmitted meets a predetermined condition indicating fraud. In a case where the content of the predetermined field meets the predetermined condition, a frame including predetermined consecutive dominant bits for notifying an anomaly is transmitted before an end of the frame is transmitted. A number of times the frame including the predetermined consecutive dominant bits is transmitted is recorded for each identifier (ID) represented by content of an ID field included in a plurality of frames which has been transmitted. A malicious electronic controller is determined in accordance with the number of times recorded for each ID.
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公开(公告)号：US20210218739A1
公开(公告)日：2021-07-15
申请号：US17215810
申请日：2021-03-29
Inventor： Yuji UNAGAMI , Manabu MAEDA , Tomoki TAKAZOE , Yoichi MASUDA , Hideki MATSUSHIMA
Abstract: In an authentication method, a first controller generates a first group key, executes first mutual authentication with devices within a group, and shares the first group key with devices that have succeeded in the first mutual authentication. When a second controller joins the group, the first controller decides which coordinator manages a group key used in common. The first controller executes second mutual authentication with the coordinator, and shares the first group key with the coordinator when the second mutual authentication is successful. The coordinator performs encrypted communication within the group using the first group key, generates a second group key when the first group key valid time runs out and before updating the first group key, executes third mutual authentication with the devices and a third controller, and updates the first group key of the devices and the third controller that have succeeded in the third authentication.
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