Kabushiki Kaisha Toshiba

Telcordia Technologies, Inc.

Toshiba Energy Systems & Solutions Corporation

Mitsuru Kanda

Yasuyuki Tanaka

Yoshihiro Oba

Seijiro Yoneyama

Takeshi Saito

Yasuyuki Nishibayashi

Yasuyuki Kozakai

Tomoki Watanabe

Keiichi Teramoto

David Famolari

Subir Das

Toshio Ito

Tatsuo Kozakaya

Shunichi Gondo

Ryuzo Okada

Yoshihiro Ohba

Yoshiki Terashima

Kenichi Taniuchi

Takaomi Murakami

Takahiro Kase

Masato Shibuya

Yoshiaki Ohsako

Chikara Takashima

Yuzuru Kurihara

Seijiro Yoneymara

A stored power production source management device of an embodiment includes an acquisition unit, a power storage management unit, and a discharging management unit. The acquisition unit acquires first information indicating a power supply source when a power storage is charged. The power storage management unit stores information indicating a power supply source for power stored in the power storage in a data storage in association with an amount of stored power on the basis of the first information. The discharging management unit specifies a power supply source for the power to be discharged on the basis of information indicating the power supply source stored in the data storage when the power storage is discharged, and subtracts the amount of power to be discharged from the amount of power corresponding to the specified power supply source in the data storage.

Stored power production source management device, method, and storage medium

A wireless communication device as an embodiment of the present invention is a wireless communication device for performing wireless communications with communication partners while switching channels to be used for each time slot, and includes a storage, an updater, a determinator, and a communicator. The storage stores pre-generated scheduling data indicating channels that can be used in each time slot. The updater determines whether or not each channel included in the scheduling data is usable, and registers the channel determined as unusable on a blacklist. The determinator determines the channel to be used in each time slot on the basis of the scheduling data and the blacklist. The communicator performs wireless communications with a communication partner by using the channel determined in each time slot.

Wireless communication device, wireless communication method and non-transitory computer readable medium

According to one embodiment, a communication device includes one or more processors. The one or more processors configured to function as a plurality of communication control units and a selection unit. The plurality of communication control units control communication in accordance with a plurality of control schemes that differ from each other. The selection unit selects a communication control unit for use in communication from the communication control units based on selection criteria.

Communication device, communication method, and computer program product

According to one embodiment, there is provided an authentication apparatus, including: a communication unit, a verifier and a connection configuration checker. The communication unit receives a message related to network access authentication on a first communication apparatus, the message including an address of the first communication apparatus and more than zero address of an authentication relay. The verifier verifies an authenticity of the first communication apparatus in response to receipt of the message by the communication unit. The connection configuration checker identifies a first destination to which the first communication apparatus intends to connect, on the basis of the address of the first communication apparatus or the address of the authentication relay included in the message when verification succeeds, and determines whether to authorize connection by the first communication apparatus to the first destination or not.

Authentication apparatus and method thereof, and computer program

According to an embodiment, a wireless communication device includes a detector to detect a mobile object by referring to sensing information; a first communicating unit to communicate mobile object information, which is related to a detection result of the mobile object, with another wireless communication device; a first calculator to calculate a moving path of the mobile object between wireless communication devices by referring to the detection result of the mobile object and mobile object information received from the other wireless communication device; a second communicating unit to communicate movement information, which is related to the moving path of the mobile object, with the other wireless communication device; and a second calculator to calculate distances between wireless communication devices that are dependent on the number of times of movement in the moving path by referring to the calculated moving path and movement information received from the other wireless communication device.

Wireless communication device, wireless communication method, and computer program product

According to an embodiment, a communication apparatus includes a security control unit. The security control unit establishes first and second secure communication channels to a first server which manages communication security keys and second server which provides a service regarding a smart meter, respectively when operation to the smart meter is started, performs mutual authentication with the first server and acquire a first key from the first server via the first secure communication channel, and relays mutual authentication with the first server and acquisition of a second key from the first server via the first secure communication channel for the smart meter.

Communication apparatus and communication method

According to one embodiment, there is provided a communication device including a first communication layer receiving processor to perform a receiving process on a first communication layer on data received from a first communication device. The first communication layer receiving processor includes a first key identifying unit to identify, a key required to process the data; a first attribute identifying unit to identify, pursuant to key data, first attribute information that is attribute information associated with the key as identified; and a data processor to process the data using the key as identified. The data processed by the data processor and the first attribute information are passed to a second communication layer processor configured to perform a process on a second communication layer.

Communication device, communication method and computer program

There is provided an authentication server including: a network access authenticating unit and an address notifying unit wherein the network access authenticating unit receives, from an authentication relay connected to a network, a first authentication message for a communication device existing under the authentication relay, and execute network access authentication process with the communication device, and the address notifying unit notifies the communication device of the server's address information in accordance with a result of the network access authentication process.

Authentication server, authentication method and computer program

There is provided an authentication device in which a network access authenticating unit executes a first network access authentication process with a communication device; master key generator generates a first master key shared with the communication device in accordance with a result of the first network access authentication process; an application-oriented encryption key generator generates a first encryption key for an application, which is shared with the communication device, on the basis of the first master key; a master key identifier determiner determines an identifier of the first master key; and an application-oriented encryption key identifier determiner determines an identifier of the first encryption key for the application in accordance with the identifier of the first master key.

Device for generating encryption key, method thereof and computer readable medium

According to one embodiment, an information notification apparatus includes a table and a notifier. The table is configured to store information about root nodes and information related to the nodes. The notifier is configured to generate, when a communication node is a root node, new information for that root node. The notifier is further configured to read out, when the communication node is not a root node, the information from the table. The notifier is further configured to notify the communication node of the new information or the information read out from the table.

Information notification apparatus, method, and program product

According to an embodiment, a control device includes a detecting unit, a communication unit, and a control unit. The detecting unit detects that a power-supplied device is connected to a power supply line relaying supply of power. The communication unit receives consumer authentication information including consumer identification information for identifying a consumer from a communication device when it is detected that the power-supplied device is connected to the power supply line, transmits the consumer authentication information to a first server, receives power-supply-availability determination information representing whether supply of power to the power-supplied device is possible or not, from the first server, and transmits power measurement information representing power supplied to the power-supplied device through the power supply line and the consumer identification information to a second server. The control unit supplies power to the power-supplied device when the power-supply-availability determination information represents that supply of power is possible.

Control device, control method, and computer program product

Provided are a communication device and a communication system capable of specifying a failure part in a network in which a time server and a communication path are made redundant. A communication device acquires time-related information from a plurality of time servers over a plurality of networks and compares the information to specify the failure part in the time servers or in the networks. A remote apparatus acquires time-related information from the communication device over the plurality of networks and compares the information to determine the failure of the communication device.

Communication device and communication system with failure detection capabilities

According to some embodiments, a key management apparatus for deploying in a smart grid system adapted to receive metering data from smart meters connected to at least one relay via a network, includes: a key control mechanism that derives a key array of individual purpose specific keys from one master key such that the purpose specific key in the key array are each independent cryptographic keys for each specific usage in an application or for each application if there is only one specific usage in an application.

Key management device, system and method having a rekey mechanism

An energy management apparatus includes: a communicator capable of communicating with at least a meter apparatus among the meter apparatus and a server apparatus that collects measurement information from the meter apparatus; a device registration processor configured to determine whether the direct communicator to the server apparatus can communicate with the server apparatus; if the direct communication is possible, transmit to the server apparatus a device registration message that requests to register a device identifier of the meter apparatus and a device identifier of the energy management apparatus; and, if the direct communication to the server apparatus is not possible, transmit the device registration message for the server apparatus to the meter apparatus; a communication processor configured to obtain energy control information of the device transmitted from the server apparatus; and a control executor configured to control the used energy amount of the device based on the energy control information.

Energy management apparatus and energy management system

In an embodiment, provided is a communication device connected to time servers via a network with transfer devices. In the communication device: a network controller receives a message containing time information counted by the time server and containing a network identifier, and obtains a receiving timing of the message; a network processing unit, when the network identifier in the message does not match with any network identifier, destroys the message; a protocol processing unit, when the network identifier has a match, calculates a time error by the time information in the message and the receiving timing, detects whether a first time server is malfunctioning, and when detected the first time server malfunctioning, outputs the time error calculated by a network identifier assigned to a second time server; a servo calculates an operation amount by the time error; and a clock varies a clock rate according to the operation amount.

Growing community of inventors

Tokyo, Japan

Mitsuru Kanda