Panasonic Intellectual Property Corporation of America

Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Panasonic Intellectual Property Corporation of

Yuji Unagami

Hideki Matsushima

Manabu Maeda

Motoji Ohmori

Natsume Matsuzaki

Tomoyuki Haga

Yoshihiro Ujiie

Yuichi Futa

Junichiro Soeda

Takeshi Kishikawa

Junji Michiyama

Naohisa Nishida

Tetsuji Fuchikami

Yuuki Hirose

Toshihisa Nakano

Hiroki Shizuya

Shingo Hasegawa

Shuji Isobe

Eisuke Koizumi

Masao Sakai

Jun Anzai

Yoichi Masuda

Tomoki Takazoe

Masao Nonaka

Hiroshi Amano

Kotaro Hakoda

Hideo Umetani

Ayaka Ichijo

Akira Tanaka

Michiko Sasagawa

Kazunori Isogai

Goichiro Hanaoka

Nuttapong Attrapadung

Kaoru Yokota

Takahiro Matsuda

Tatsumi Oba

Shota Yamada

Ayaka Mitani

Marika Minagawa

Kakuya Yamamoto

Masahiro Taguchi

Junichi Tsurumi

Ryo Kato

Makoto Carlos Miyauchi

Tadanori Teruya

Masashi Hisai

Kenji Harada

Shunji Harada

Kouji Miura

Takuji Hiramoto

Tomohiro Oda

Junya Iwazaki

Fumiaki Kagaya

Eiichi Abe

Naoki Ochi

Toshihiro Inokuchi

Kenji Yasu

Atsushi Umeta

Hitoshi Tahara

Takashi Kurano

A data management method performed by a first authentication server included in a plurality of authentication servers each having a distributed ledger in a data management system including a device and the plurality of authentication servers includes: obtaining first transaction data generated by the device and including device data obtained or generated by the device; and generating a block including the first transaction data and recording the generated block in the distributed ledger, when the device data included in the first transaction data is first data indicated in an information type list which is a data list indicating data that is subject to recording in the distributed ledger and related to a predetermined contract.

Data management method, data management system, and recording medium

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.

Control method, controller, data structure, and power transaction system

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.

Controlling method, device, and recording medium

A control method is a control method for controlling a first node that manages a first blockchain in a first distributed ledger in a system utilized to use a service object and including the first node and a plurality of second nodes that each manage a second blockchain in a second distributed ledger. The control method includes: generating first transaction data indicating that the service object has been unlocked when the service object is to be used, the first transaction data including a first contract ID uniquely identifying a first contract to use the service object; and storing a block containing the first transaction data in the first blockchain.

Control method, control device, and recording medium

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.

Verification method, verification apparatus, and storage medium including program stored therein

An information provision method includes accumulating, in a first database, a first identifier identifying each of one or more service providers, and first device information indicating an electrical device to be designated by each of the one or more service providers in association with each other; accumulating, in a second database, a second identifier identifying each of one or more users, and second device information indicating an electrical device to be used by the one or more users in association with each other; extracting a service provider associated with the first device information when the second device information is updated by addition of a new electrical device to be used by one of the one or more users, and when the new electrical device is included in the electrical devices indicated by the first device information.

Information provision method

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.

Unauthorized communication detection method, unauthorized communication detection device, and recording medium

A control method for an anomalous data sensing system including at least a plurality of authentication servers and including: 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.

Control method, recording medium, and anomalous data sensing system

A control method that is used in a content management system including a plurality of servers, each holding a distributed ledger, and that is executed by one of the servers includes acquiring first transaction data from a providing device and storing the acquired first transaction data in the distributed ledger held by each server, the first transaction data including identification information for specifying content provided by the providing device and permission/prohibition information regarding whether to permit or prohibit the browsing of the content.

Control method, contents management system, recording medium, and data structure

An information transaction method of the present disclosure includes an information providing phase of providing, by an information provider, information requested by an information user via a distributed ledger of authentication server devices. In the information providing phase, an information provider terminal acquires first transaction data including an information user ID, an information provider ID, and a second information index indicating an index of first information requested by the information user among information items indicated by the first information index published in the distributed ledger, the first transaction data being written in the distributed ledger. The information provider terminal generates first encrypted information by encrypting the first information designated by the second information index, generates second transaction data including the information provider ID, the information user ID, and the first encrypted information, and transmits the second transaction data to an authentication server device.

Information transaction method, information user terminal, and recording medium

The present disclosure provides a control method that is executed by one of a plurality of servers in a content management system that includes: the plurality of servers that own distributed ledgers; and a storing device that stores content, the control method including: acquiring transaction data that indicates that a providing device has provided content and includes at least identification information of the content provided by the providing device; and storing the transaction data acquired into the distributed ledgers of the plurality of servers.

Control method, content management system, recording medium, and data structure

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.

Control method, mobile node, and recording medium

A control method includes: obtaining first transaction data that includes a first variable indicating first information on a first contract made between a first user and a second user, and a second variable set to a predetermined value indicating second information is undetermined; storing the first transaction data into the distributed ledger; executing storing processing of reading out the second variable, and storing it into a rewritable storage in a server; obtaining second transaction data that includes a third variable indicating third information on a second contract made between the first user and a third user, and a change command for changing the second variable, based on the third variable; storing the second transaction data into the distributed ledger; and executing change processing of changing, according to the change command, the second variable from the predetermined value, after the second transaction data is stored into the distributed ledger.

Control method, device, and recording medium

A charging station charges an electric energy storage device, and includes: a battery authenticator that performs mutual authentication with the electric energy storage device connected for charging; a communicator that obtains, from the electric energy storage device whose validity is confirmed in the mutual authentication, a degree of deterioration related to deterioration of the electric energy storage device; a recorder that stores the degree of deterioration obtained by the communicator and that is tamper-resistant; and a controller that does not charge the electric energy storage device when the degree of deterioration of the electric energy storage device indicates that the deterioration is advanced beyond a predetermined threshold value.

Charging station, battery management system, and charging method that forgo charging when a degree of deterioration is advanced

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.

Control method, data structure, server, and recording medium

Growing community of inventors

Osaka, Japan

Yuji Unagami