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公开(公告)号：US20240046264A1
公开(公告)日：2024-02-08
申请号：US18382154
申请日：2023-10-20
Inventor： Naohisa NISHIDA , Kakuya YAMAMOTO , Yuji UNAGAMI , Yuuki Hirose , Ayaka NAKASAKA , Motoji OHMORI , Junji MICHIYAMA
IPC: G06Q20/38
CPC classification number: G06Q20/389 , G06Q2220/10
Abstract: A method includes: acquiring transaction data that includes value information regarding a value to be transferred from a second user to a first user; executing a first smart contract recorded in a first blockchain by recording the transaction data in the first blockchain; and executing a second smart contract recorded in a second blockchain different from the first blockchain based on the first smart contract. The second smart contract is a smart contract for transferring at least a portion of the value to be transferred from the second user to the first user, from a first account held by the first user to a third account held by a third user.
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公开(公告)号：US20230351375A1
公开(公告)日：2023-11-02
申请号：US18219194
申请日：2023-07-07
Inventor： Yuji UNAGAMI
IPC: G06Q20/38 , G06F16/182 , H04L9/32 , H04L9/06
CPC classification number: G06Q20/3825 , G06F16/1824 , H04L9/3247 , H04L9/0637 , H04L9/50
Abstract: Provided is a data distribution method for a data distribution system which includes a device and a plurality of authentication servers. The data distribution method includes: receiving, by a first authentication server included in the plurality of authentication servers, transaction data including encrypted history information which is history information of the device encrypted using a secure computation method which enables computation without decrypting the encrypted history information; recording, by the first authentication server, the transaction data in a distributed ledger in synchronization with the plurality of authentication servers excluding the first authentication server, when a validity of the transaction data received from the device is verified by the first authentication server; and performing, by the first authentication server, secure computation on the encrypted history information included in the transaction data, the secure computation being computation processing performed without decrypting the encrypted history information.
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公开(公告)号：US20230316435A1
公开(公告)日：2023-10-05
申请号：US18206190
申请日：2023-06-06
Inventor： Yuji UNAGAMI , Hideki MATSUSHIMA
CPC classification number: G06Q50/06 , G06F1/28 , G06Q20/389 , G07F15/003 , G06Q20/0855 , G06Q20/145 , H02J13/00007 , H04L63/0853
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：US20230289759A1
公开(公告)日：2023-09-14
申请号：US18128383
申请日：2023-03-30
Inventor： Junichiro SOEDA , Junji MICHIYAMA , Yuji UNAGAMI , Naohisa NISHIDA , Ayaka MITANI , Yuuki HIROSE
IPC: G06Q20/12 , G06Q20/40 , A63F13/792
CPC classification number: G06Q20/1235 , A63F13/792 , G06Q20/401
Abstract: A method includes: transmitting, to a second device used by a second user, identification information of a smart contract including a process of providing content according to a provision condition under which a first user allows to provide the content, through short-range wireless communication; receiving transaction data including identification information of the second device and instruction information for instructing to execute the smart contract, through short-range wireless communication; and storing the transaction data received in a distributed ledger and executing the smart contract, to change an owner of the content from the first user to the second user.
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公开(公告)号：US20230230474A1
公开(公告)日：2023-07-20
申请号：US18124794
申请日：2023-03-22
Inventor： Junji MICHIYAMA , Yuji UNAGAMI , Naohisa NISHIDA , Kakuya YAMAMOTO , Yuuki HIROSE , Motoji OHMORI , Tetsuji FUCHIKAMI
CPC classification number: G08G1/0141 , G08G1/0116 , H04W4/80 , H04W4/44
Abstract: A control method according to the present disclosure is a method for controlling an information spot placed on at least one of a traffic light and roadside equipment and includes: obtaining, from a first mobile body via short-range wireless communication, first information obtained from a first path along which the first mobile body has traveled to reach the location of the information spot and indicating a situation on the first path; obtaining information related to the destination of a second mobile body, which is different from the first mobile body, from the second mobile body via the short-range wireless communication; and transmitting the first information to the second mobile body when it is determined that the second mobile body is to travel along at least a part of the first path to reach the destination.
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Patent Agency Ranking
公开(公告)号：US20220365925A1
公开(公告)日：2022-11-17
申请号：US17876982
申请日：2022-07-29
Inventor： Naohisa NISHIDA , Junji MICHIYAMA , Yuji UNAGAMI , Junichiro SOEDA
Abstract: A control method of an analysis device includes analyzing a binary code of each of a plurality of smart contracts stored in a first distributed ledger; obtaining, by using a result of the analyzing, items of commonization information expressing, in a common format, items of information provided by the plurality of smart contracts; and generating transaction data that includes the items of commonization information obtained and performing control of storing the transaction data generated into a second distributed ledger.
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公开(公告)号：US20220358496A1
公开(公告)日：2022-11-10
申请号：US17872584
申请日：2022-07-25
Inventor： Naohisa NISHIDA , Yuji UNAGAMI
Abstract: A control method is to be executed by one of a plurality of servers included in an information management system. Each of the plurality of servers owns a distributed ledger. The control method includes: receiving transaction data including a signature generated using any of a plurality of signing keys owned by a user, each of the plurality of signing keys being associated with a reliability; determining whether the reliability associated with the signature included in the transaction data received is higher than or equal to a specified value; storing the transaction data in the distributed ledger, if reliability is determined to be higher than or equal to the specified value in the determining; and executing invalidation processing to invalidate the transaction data, if the reliability is determined to be lower than the specified value in the determining.
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公开(公告)号：US20220321649A1
公开(公告)日：2022-10-06
申请号：US17843408
申请日：2022-06-17
Inventor： Yuji UNAGAMI , Hideki MATSUSHIMA , Tomoyuki HAGA , Manabu MAEDA
IPC: H04L67/1087 , H04L9/40 , H04L9/00
Abstract: In a data distribution method according to the disclosure, first authentication servers and a first data server belong to a first group, and second authentication servers and a second data server belong to a second group different from the first group. A first authentication server obtains first transaction data that includes a data obtaining request indicating a request for obtaining or referring to data pertaining to an apparatus, and records a block including the first transaction data into its distributed ledger belonging to the first group. A second authentication server obtains the first transaction data, and records the block including the first transaction data into a distributed ledger belonging to the second group. The first authentication server causes the first data server to transfer the data pertaining to the apparatus held therein to the second data server or to make such data available for reference by the second data server.
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公开(公告)号：US20220301086A1
公开(公告)日：2022-09-22
申请号：US17835197
申请日：2022-06-08
Inventor： Yuji UNAGAMI , Junji MICHIYAMA , Junichiro SOEDA , Motoji OHMORI , Tetsuji FUCHIKAMI , Yuuki HIROSE , Naohisa NISHIDA , Masahiro TAGUCHI
IPC: G06Q50/18
Abstract: A control method includes: obtaining first transaction data that includes first information on a first contract made between a first user and a second user; storing the first transaction data obtained into the distributed ledger; obtaining second transaction data that includes second information on a second contract made between the first user and a third user; storing the second transaction data obtained into the distributed ledger; obtaining third transaction data using the first information and the second information, when one of the first transaction data and the second transaction data is associated with a remaining one of the first transaction data and the second transaction data, the third transaction data including third information on a third contract made between the second user and the third user; and storing the third transaction data obtained into the distributed ledger.
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公开(公告)号：US20220278908A1
公开(公告)日：2022-09-01
申请号：US17693803
申请日：2022-03-14
Inventor： Hideki MATSUSHIMA , Motoji OHMORI , Natsume MATSUZAKI , Yuichi FUTA , Toshihisa NAKANO , Manabu MAEDA , Yuji UNAGAMI , Hiroshi AMANO , Kotaro HAKODA
IPC: H04L43/04 , G06F21/55 , G06Q10/00 , H04L41/069 , H04L67/10
Abstract: An information management method collects log information of one or more home electrical apparatuses corresponding to service providers. Display screen data is generated which indicates a status of the log information. The display screen data includes groups of information which each contain information on an apparatus, a service provider corresponding to the apparatus, and log information output from the apparatus. Provision of the log information of each group is individually selectable. The display screen data is provided via a network to a display terminal that performs access to a server device. Information is received from the display terminal, which indicates that selection on whether or not provision of the log information is performed. Provision of the log information is not performed on the selected group when a determination is made that refusal of provision of the log information on the selected group is performed.
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