公开(公告)号：US20190236726A1

公开(公告)日：2019-08-01

申请号：US16256211

申请日：2019-01-24

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yuji UNAGAMI

IPC: G06Q50/06 ,  G06F21/62 ,  H04L9/32 ,  H04L9/30 ,  G06Q20/38 ,  G06Q40/04

CPC classification number: G06Q50/06 ,  G06F21/6245 ,  G06Q20/065 ,  G06Q20/382 ,  G06Q20/3825 ,  G06Q20/3829 ,  G06Q20/389 ,  G06Q30/06 ,  G06Q40/04 ,  G06Q2220/00 ,  H04L9/30 ,  H04L9/3247

Abstract: A control method including: receiving first transaction data including a first electronic signature from the a home of a first user; verifying whether the received first electronic signature included in the first transaction data is valid; verifying validity of the received first transaction data; when the first electronic signature and the validity of the first transaction data are verified successfully, executing a first consensus algorithm for the first transaction data; and when the validity of the first transaction data is verified according to the first consensus algorithm, recording a block including the first transaction data in a distributed ledger. The first electronic signature is a group signature assigned to a group to which the first user belongs.

公开(公告)号：US20230306427A1

公开(公告)日：2023-09-28

申请号：US18205069

申请日：2023-06-02

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yuji UNAGAMI ,  Kakuya YAMAMOTO ,  Ayaka MITANI ,  Tomoyuki HAGA

IPC: G06Q20/40 ,  G06Q20/02 ,  G06Q30/0207

CPC classification number: G06Q20/4014 ,  G06Q20/02 ,  G06Q30/0236

Abstract: A service server generates a first smart contract programmed to be capable of executing provision of an incentive to a user when a goal indicated by generated challenge content generated is achieved, generates first transaction data including the first smart contract, and transmits the data to a first authentication server. The first authentication server executes a consensus algorithm and records the first transaction data in a distributed ledger to run the first smart contract. The first authentication server notifies a device used by the user of the challenge content. The first authentication server obtains, from the device, second transaction data including first challenge content selected to be registered by the user, and records the second transaction data in the distributed ledger by executing a consensus algorithm.

公开(公告)号：US20230246849A1

公开(公告)日：2023-08-03

申请号：US18131448

申请日：2023-04-06

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Yuji UNAGAMI ,  Manabu MAEDA ,  Tomoyuki HAGA ,  Hideki MATSUSHIMA ,  Jun ANZAI

IPC: H04L9/32 ,  H04L9/40 ,  H04L67/12 ,  G06F21/64 ,  G06F21/62

CPC classification number: H04L9/3247 ,  H04L9/3242 ,  H04L63/123 ,  H04L67/12 ,  G06F21/64 ,  G06F21/6236 ,  G08G1/09

Abstract: A method for verifying content data to be used in a vehicle is provided. The method includes acquiring content data, acquiring, from partial data divided from the content data, a respective plurality of first hash values, acquiring a signature generated by using the first hash values and a key, acquiring state information that indicates a state of a vehicle, determining an integer N that is greater than or equal to one based on the acquired state information, generating, from N pieces of partial data included in the partial data, respective second hash values, verifying the content data by using each of (a) a subset of the plurality of first hash values respectively generated from partial data other than the N pieces of partial data, (b) the second hash values, and (c) the signature, and outputting information that indicates a result of the verifying.

公开(公告)号：US20230083454A1

公开(公告)日：2023-03-16

申请号：US17990152

申请日：2022-11-18

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yuji UNAGAMI

IPC: G06F21/60 ,  H04L9/06 ,  H04L9/32

Abstract: Provided is a data protection method which includes: receiving transaction data which includes a first hash value obtained from history information of a home; obtaining, from a data server, a second hash value computed by the data server performing computation processing on encrypted history information without decrypting the encrypted history information, the encrypted history information being history information of the home encrypted using a secure computation method which enables computation without decrypting the encrypted history information, the encrypted history information being obtained from the home; verifying the transaction data, and determining whether the first hash value and the second hash value match; and when a validity of the transaction data is verified and the first hash value and the second hash value match, recording the transaction data in a distributed ledger.

公开(公告)号：US20230073703A1

公开(公告)日：2023-03-09

申请号：US17986230

申请日：2022-11-14

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yuji UNAGAMI ,  Tetsuji FUCHIKAMI ,  Yuuki HIROSE ,  Ayaka MITANI

IPC: H04L67/1042 ,  H04W40/24 ,  H04L67/1095

Abstract: A control method to be performed by a first mobile node disconnected from a mobile line among a plurality of mobile nodes each being connectable to the mobile line includes: transmitting and receiving a mobile line connection status to and from each of one or more second mobile nodes via near-field wireless communication; building a MANET with the one or more second mobile nodes based on a first mobile line connection status of the first mobile node and a second mobile line connection status of each of the one or more second mobile nodes; generating, after the building of the MANET, first transaction data including at least first MANET routing information that indicates the MANET connection status of the first mobile node; and recording a block including the first transaction data into a first distributed ledger that is used for a blockchain in the MANET.

公开(公告)号：US20220338013A1

公开(公告)日：2022-10-20

申请号：US17849273

申请日：2022-06-24

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Manabu MAEDA ,  Tomoyuki HAGA ,  Yuji UNAGAMI ,  Naohisa NISHIDA ,  Masashi HISAI ,  Hitoshi TAHARA ,  Kenji HARADA ,  Takashi KURANO

IPC: H04W12/121

Abstract: An unauthorized communication detection method detects an unauthorized communication message on an in-facility network over which at least two devices including a first device and a second device are communicably connected, and includes: receiving, from the first device, a communication message transmitted from the first device to the second device; obtaining, when the communication message is received from the first device, first information indicating a state of at least one of (a) a person in a facility and (b) the at least two devices, and determining whether to execute processing pertaining to a device control command that controls the second device when the communication message received from the first device is a communication message including the device control command, the determining being performed based on the first information; and executing the processing pertaining to the device control command when the determining determines to execute the processing.

公开(公告)号：US20220300958A1

公开(公告)日：2022-09-22

申请号：US17836349

申请日：2022-06-09

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yuji UNAGAMI ,  Junji MICHIYAMA ,  Junichiro SOEDA ,  Motoji OHMORI ,  Tetsuji FUCHIKAMI ,  Yuuki HIROSE ,  Naohisa NISHIDA ,  Masahiro TAGUCHI

IPC: G06Q20/38

Abstract: A control method is executed by one device among devices included in a management system. Each of the devices includes a distributed ledger and stores: a parent smart contract including an automatic generation function of automatically generating a new smart contract; and a management function of selecting and managing one of child smart contracts generated by the devices. The control method includes: generating a first child smart contract; transmitting first transaction data including the generated first child smart contract to a different device and storing the first transaction data into the distributed ledger of the one device; receiving second transaction data including a second child smart contract generated by the different device and storing the second transaction data into the distributed ledger of the one device; and managing one child smart contract in association with the parent smart contract through execution of the management function.

公开(公告)号：US20220270102A1

公开(公告)日：2022-08-25

申请号：US17738419

申请日：2022-05-06

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Naohisa NISHIDA ,  Yuji UNAGAMI

IPC: G06Q20/40 ,  G06Q20/38

Abstract: A controlling method is executed by one device among a plurality of devices each including a distributed ledger in an illicit transaction reporting system that reports an illicit transaction in electronic transactions, and the controlling method includes obtaining report transaction data that includes report information indicating a report that one transaction is suspected of being illicit, transferring the report transaction data obtained to other devices among the plurality of devices and storing the report transaction data into the distributed ledger of the one device, obtaining approving or disapproving transaction data that includes approving or disapproving information with regard to the report, transferring the approving or disapproving transaction data obtained to the other devices and storing the approving or disapproving transaction data into the distributed ledger of the one device, and determining whether the report is correct based on the approving or disapproving information in the approving or disapproving transaction data.

公开(公告)号：US20220148110A1

公开(公告)日：2022-05-12

申请号：US17581225

申请日：2022-01-21

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yuji UNAGAMI ,  Junji MICHIYAMA ,  Junichiro SOEDA ,  Naohisa NISHIDA ,  Yuuki HIROSE ,  Tetsuji FUCHIKAMI ,  Motoji OHMORI

IPC: G06Q50/18 ,  G06Q20/38

Abstract: First information including first contract information indicating contract content of a first contract and a provisional contract flag indicating that the first contract information is a provisional contract is received from a first terminal used by a first user who is one of two parties that have agreed to the first contract, and is stored into a ledger. The first contract information obtained from the ledger is transmitted to a second terminal used by an auditor who inspects the first contract information. A check result indicating approval or disapproval of the first contract information by the auditor is received from the second terminal. When the check result indicates approval of the first contract information, second information including the first contract information and a definitive contract flag indicating that the first contract information has been adopted as a definitive contract is obtained and stored into the ledger.

公开(公告)号：US20220147984A1

公开(公告)日：2022-05-12

申请号：US17579927

申请日：2022-01-20

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yuji UNAGAMI ,  Junji MICHIYAMA ,  Junichiro SOEDA ,  Naohisa NISHIDA ,  Yuuki HIROSE ,  Tetsuji FUCHIKAMI ,  Motoji OHMORI

IPC: G06Q20/38

Abstract: A control method is executed by a first server among a plurality of servers in a system including the plurality of servers and a generating device that generates record information about usage records for users belonging to one group when a service provided by a business operator is used on a group basis. The method includes: obtaining, from the generating device, first record information about a first usage record of a service by a first user belonging to the one group; determining whether the first record information obtained is permitted under a rule based on contract content, stored in the first server, of a contract entered into by the first user and the business operator; and forwarding first transaction data including a determination result to a plurality of second servers and storing a first block including the first transaction data in a distributed ledger managed by the first server.