Sony Corporation

Sony Group Corporation

Tadashi Morita

Yoshihisa Takayama

Kunihide Fujii

Shigeru Arisawa

Susumu Kusakabe

Kazushige Tsurumi

Katsuyuki Teruyama

Akihiko Yamagata

Akira Fukada

Kenji Nakada

Hiroaki Hamada

Masachika Sasaki

Toshiharu Takemura

Masayuki Takada

Toshinori Kanemoto

Daisuke Kawamoto

Masato Kita

Mitsuhiro Nakamura

Fumio Kubono

Hideo Yamamoto

Mario Tokoro

Taro Kurita

Yasumasa Nakatsugawa

Kazuyuki Sakamoto

Daisuke Shiigi

Katsuya Shimoji

Toshimitsu Higashikawa

Annette Werth

Yoshiichi Tokuda

Kenichi Okamura

Takuya Ichikawa

Kunihide Fuji

There is provided a power supply arbitration device that makes it possible for side of a power consumer to take initiative to stabilize a power grid and suppress peak power for the power consumer. The power supply arbitration device including a control unit, a communication unit that communicates with another device through a communication network, and a storage unit that stores information, in which, in a case where a power request received by the communication unit is requested from a power consumption device registered in the storage unit, the control unit specifies a power supply device registered in the storage unit as a power feeding device that supplies power requested by the registered power consumption device on a basis of a power consumption profile associated with the registered power consumption device.

Power supply arbitration device, power supply device, power consumption device, power supply remote controller, power supply arbitration method, and power system

Provided is an arc suppression device including one or more current-limiting circuits provided in parallel with a circuit breaker that switches between feeding and shutoff of power from a power supply. The current-limiting circuit shuts off a current from the power supply when the power from the power supply is fed to a load through a circuit breaker. The current from the power supply is shut off when a voltage generated by a potential difference between contacts of the circuit breaker becomes a predetermined voltage or higher in a case where feeding of the power from the power supply to the load is shut off by the circuit breaker. The potential difference is generated upon shutoff.

Arc suppression device, mobile body, and power supply system

[Object] To provide a control apparatus capable of optimum power interchange in the whole of a community including a plurality of customers. [Solution] There is provided a control apparatus including: an acquisition section configured to acquire information regarding consumption of power from a plurality of nodes that store and consume power; and a control section configured to use the information regarding consumption of power to generate data regarding target power storage in each of the nodes, the data being provided to the node.

Control apparatus, control method, and power storage control apparatus

A current limiting circuit configured to: before release of a touch between a second contact provided at a position where a terminal on a power receiving side in which a current flows at supply of DC power in an electrode that supplies the DC power touches before touching a first contact provided for the electrode at supply of the DC power and the terminal, decrease the current flowing into the terminal through the second contact; and avoid flowing a current in a case where the terminal is touching the first contact, and decrease the current flowing into the terminal through the second contact only in a case where the terminal is touching the second contact.

Current limiting circuit, DC power supply connector, and DC power source device

A DC power control device including: an instructing unit configured to instruct another device connected to a DC bus line to read a voltage value and a current value on the DC bus line; and a correction reference value deciding unit configured to acquire the voltage value and the current value read by the other device and to decide a correction reference value in transmitting and receiving DC power to and from the other device through the DC bus line using the acquired values.

DC power control device, method of controlling DC power, and DC power control system

A method for a communication device includes determining whether a first radio frequency (RF) signal at a level of at least a first predetermined field threshold is detected. The method also includes generating a second RF signal at a level of at least a second predetermined field threshold greater than the first predetermined field threshold, when the communication device receives an instruction to generate the second RF signal and the determining determines that the first RF signal at the level of at least the first predetermined field threshold is not detected. The method further includes receiving a load modulated RF signal in response to the second RF signal.

Communication system, communication apparatus and communication method

The present disclosure proposes a switching device which, when supplying and interrupting power by combining a mechanical relay with a solid-state relay, suppresses the effects of chattering from the mechanical relay, and thus makes it possible to stably supply and interrupt power. Provided is the switching device including: a semiconductor relay configured to switch between supplying and interrupting power from a power supply; a mechanical relay configured to be connected in parallel to the semiconductor relay and connected at one end to a control terminal of the semiconductor relay; and a switch configured to switch between supplying and interrupting current to the semiconductor relay. The semiconductor relay turns on by high voltage being applied to the control terminal after current flows through a coil of the mechanical relay and a contact is switched, and the semiconductor relay turns off by low voltage being applied to the control terminal after current stops flowing through the coil of the mechanical relay and the contact is switched.

Switching device

[Object] To provide a power transmission and reception control device configured to check whether another consumer is controlling a direct-current bus line when interchanging direct-current power. [Solution] Provided is a power transmission and reception control device including: a power transmission and reception control unit configured to control transmission and reception of direct-current power over a direct-current power line through a DC-to-DC converter connected to the direct-current power line; a power transmission and reception management unit configured to request the power transmission and reception control unit to control the DC-to-DC converter; and a power transmission and reception arbitration unit configured to request the power transmission and reception management unit to perform transmission and reception of power through the DC-to-DC converter. When the power transmission and reception arbitration unit instructs the power transmission and reception management unit to set voltage to the direct-current power line, the power transmission and reception management unit causes the power transmission and reception control unit to set the voltage to the direct-current power line a predetermined number of times by using a random number, and if voltage and current of the direct-current power line are set values, the power transmission and reception management unit instructs the power transmission and reception arbitration unit to acquire a control right of the direct-current power line.

Power transmission and reception control device, power transmission and reception control method, computer program, and input and output control device

[Object] To provide a switching device in which it is possible to suppress an occurrence of an arc while preventing a contact welding of a switch. [Solution] Provided is the switching device including: a first circuit breaker mechanism provided in a path of current output from a direct current power supply; a second circuit breaker mechanism that is provided in parallel with the first circuit breaker mechanism in the path of current output from the direct current power supply, and is connected and disconnected with a time lag from the first circuit breaker mechanism; a capacitor provided between the direct current power supply and the second circuit breaker mechanism; and a discharging unit that is connected in parallel with the capacitor. A disconnection speed when the first circuit breaker mechanism is disconnected and a capacitance of the capacitor are set such that a dielectric strength voltage rises faster than a rising speed of a charging voltage of the capacitor, in a case where resistance of a load that receives a supply of the current from the direct current power supply is minimal.

Switching device, movable body, power supply system and switching method

A method of operating a first battery server for use with a first node of a power interchange system that distributes direct current (DC) power between nodes, wherein each node of the nodes comprises a storage battery to store electrical energy and a battery server to control transmission of DC power from the storage battery of the node to one or more other nodes and to control receipt of DC power at the node from one or more storage batteries of one or more other nodes. The method comprises, in response to detecting that a state of charge of the first storage battery and/or a usage rate of power satisfies one or more conditions, requesting that a master node of the power interchange system control transmission of power from another node of the nodes to the first node, wherein the master node is one of the nodes.

Power transmission and reception control device, method for controlling transmission and reception of power, power transmission and reception control system

There is provided an integrated circuit capable of performing more secure encrypted communication using near field non-contact wireless communication. The integrated circuit including a communication processing section configured to communicate with another apparatus through non-contact communication, and an encryption information generation section configured to make a determination on generation of authentication information used to mutually authenticate the other apparatus in performing non-contact communication with the other apparatus depending on presence or absence of a history of non-contact communication with the other apparatus, before the communication processing section executes communication of encrypted information with the other apparatus. The integrated circuit allows more secure near field non-contact wireless communication to be performed.

Integrated circuit, communication method, computer program, and communication apparatus

An application program relating to a process of an integrated circuit is stored in a virtual integrated circuit storage area server apparatus. Following a mutual authentication between the IC and the virtual storage area server apparatus through a portable communication function unit, the server apparatus executes the application program. Additionally, through the IC, the portable communication function unit, a wireless communication line, and a network, communicate with an IC_R/W apparatus and perform a process relating to a service in collaboration with each other.

Circuit device and a communication apparatus

A system that acquires information indicating a variation in voltage corresponding to each of a plurality of nodes connected to a direct-current (DC) line; and identifies a topology of the plurality of nodes connected to the DC line based on the acquired information indicating the variation in voltage corresponding to each of the plurality of nodes.

Power path information generation device, method for generating power path information, and computer program

An object is to provide a DC power supply connector that can suppress occurrence of an arc discharge at DC power off with a small-scale configuration without reducing power efficiency during DC power supply and can reduce heat generation. The connector includes, on at least any of a positive-electrode-side electrode side and a negative-electrode-side electrode side, a movable contact piece () that touches a first contact () in a state where a terminal () on a power receiving side has been inserted and to touch a second contact () in a state where the terminal has not been inserted, and a current limiting circuit () including a switching element (T). The current limiting circuit () does not flow a current to the switching element (T) in the case where the movable contact piece () is touching the first contact (), and flows a current to the terminal () through the movable contact piece () until the movable contact piece () is linked to the second contact () after separation from the first contact (), and gradually decreases the flowing current.

Growing community of inventors

Tokyo, Japan

Tadashi Morita