Kabushiki Kaisha Toshiba

International Semiconductor Group

Toshiba Electronic Devices & Storage Corporation

Kentaro Taniguchi

Ryoko Matsuo

Tomoya Tandai

Tomoko Adachi

Hiroki Mori

Toshiya Mitomo

Toshiyuki Ogawa

Toshihisa Nabetani

Katsuya Nonin

Ryota Sekiya

Kazumi Sato

Tsuguhide Aoki

Takeshi Tomizawa

Yukako Tsutsumi

Hirotsugu Kajihara

Gurusanthosh Pabbisetty

A power supply system includes a first power supply apparatus and a second power supply apparatus. The second power supply apparatus includes a power transmission controller and a receiver. The power transmission controller transmits a power transmission signal for power supply. The receiver receives information on a wireless system to which neither the first power supply apparatus nor the second power supply apparatus belongs from the first power supply apparatus. The power transmission controller determines at least one of a transmission time at which the power transmission signal is transmitted, a transmission direction in which the power transmission signal is transmitted, a power level of the power transmission signal, or a frequency of the power transmission signal, using the information on the wireless system, and transmits the power transmission signal based on this determination.

Power supply apparatus

A power supply system includes a first power supply apparatus configured to perform power transmission by an electromagnetic wave having a first frequency band, and a second power supply apparatus configured to perform power transmission by an electromagnetic wave having a second frequency band. The first power supply apparatus and the second power supply apparatus are provided so as to be 2H×{tan(θ)} or greater distant from each other, when each of the first power supply apparatus and the second power supply apparatus is provided in height H from a floor surface, where H is a positive number, and when a direction of a maximum value ±3 dB is in a range from −θ to +θ in a case where a perpendicular downward direction from each position is a standard.

Electronic apparatus, power supply system and power supply control method

According to one embodiment, a wireless communication device, includes a receiver configured to receive a first field, receive at least one of a plurality of second fields having been multiplexed and transmitted, and decode the one of the second fields to obtain a frame in a case where first information identifying the wireless communication device is not set in the first field, and a controller configured to suppress access to a wireless medium during a period indicated by a value set in the frame.

Wireless communication device, wireless communication terminal and wireless communication method

A power supply system includes a first power supply apparatus configured to perform power transmission by an electromagnetic wave having a first frequency band, and a second power supply apparatus configured to perform power transmission by an electromagnetic wave having a second frequency band. The first power supply apparatus and the second power supply apparatus are provided so as to be 2H&#xd7;{tan(&#x3b8;)} or greater distant from each other, when each of the first power supply apparatus and the second power supply apparatus is provided in height H from a floor surface, where H is a positive number, and when a direction of a maximum value &#xb1;3 dB is in a range from &#x2212;&#x3b8; to +&#x3b8; in a case where a perpendicular downward direction from each position is a standard.

According to one embodiment, a wireless communication device includes a transmitter configured to transmit a first field containing information to identify a plurality of wireless communication terminals, and configured to multiplex and transmit a plurality of second fields in each of which a first frame containing an address of any of the wireless communication terminals is set; and a controller configured to determine, for the first frames, values pertaining to lengths of durations to suppress access to a wireless medium to the wireless communication terminal having an address different from the address contained in each of the first frames. The transmitter is configured to set the values in the first frames, the second fields, or the first field. The controller is configured to determine the values so that the durations have an end at an identical time.

Wireless communication device and wireless communication terminal

According to one embodiment, an wireless power transmission apparatus includes a plurality of antennas, a power transmission circuit, a measuring circuit and a control circuit. The power transmission circuit is configured to transmit a beam of a first wireless signal from the plurality of antennas. The measuring circuit is configured to receive a second wireless signal with the plurality of antennas. The control circuit is configured to: detect an object in a direction of the beam based on the second wireless signal received at a plurality of timings; and change a shape of the beam by controlling at least either an amplitude or a phase of the first wireless signal provided to each antenna of the plurality of antennas.

Electronic apparatus, system and method

According to one embodiment, an electronic apparatus includes power transmission circuitry, and detection circuitry. The power transmission circuitry transmits power by an electromagnetic wave with a first frequency band. The detection circuitry receives a reception signal and performs carrier sense with a second frequency band different from the first frequency band. The detection circuitry includes interference avoidance circuitry that eliminates a signal having a third frequency band which is a part of the second frequency band from the reception signal.

According to one embodiment, an electronic apparatus for feeding power to an electronic device by an electromagnetic wave in a first frequency band, includes a receiver and a transmitter. The receiver receives a beacon from the electronic device via at least a part of the first frequency band. The beacon includes an unmodulated signal at least partly. The transmitter transmits a first electromagnetic wave for feeding power to the electronic device via the first frequency band based on the beacon. A time length of the beacon is different from a time length of the first electromagnetic wave.

Efficient wireless power feeding apparatus and method

According to one embodiment, an electronic device includes processor circuitry. The processor circuitry is configured to control detection module to execute a first carrier sense by performing at least one of phase control and amplitude control corresponding to a first beam pattern for a received wireless signal, and execute a second carrier sense by performing at least one of phase control and amplitude control corresponding to a second beam pattern for the received wireless signal, and supply power by an electromagnetic wave with the first beam pattern based on a result of the first carrier sense, and control power supply module to supply power by an electromagnetic wave with the second beam pattern based on a result of the second carrier sense.

Wireless power device with interference mitigation

According to one embodiment, transmission circuitry transmits power with a first electromagnetic wave in a first frequency band. A processor circuitry executes a carrier sense during a first period, in at least a second frequency band different from the first frequency band. The transmission circuitry transmits power with a second electromagnetic wave in the first frequency band in a second period following the first period, if a wireless signal is not detected by the carrier sense during the first period. The processor circuitry executes the carrier sense during a third period following the first period in the at least the second frequency band, if the wireless signal is detected by the carrier sense during the first period.

Electronic apparatus and method

According to one embodiment, an electronic apparatus includes receiver circuitry and controller circuitry. The receiver circuitry is configured to receive a radio signal from a target apparatus. The controller circuitry is configured to estimate first position information of the target apparatus based on a captured image; and estimate second position information of the target apparatus based on both the first position information and information of the radio signal.

Position estimating apparatus, position estimating method, and terminal apparatus

An electronic apparatus includes communication circuitry and processing circuitry. The communication circuitry receives first and second wireless signals from a first terminal when the electronic apparatus reaches first and second measurement points. The communication circuitry receives third and fourth wireless signals from a second terminal when the electronic apparatus reaches third and fourth measurement points. The processing circuitry estimates one or more first candidates of a position of the first terminal and one or more second candidates of a position of the second terminal. The processing circuitry specifies the position of the first terminal and the position of the second terminal.

Electronic apparatus, system including electronic apparatus, position estimation method

According to one embodiment, an electronic device includes processor circuitry configured to control a signal detection module to detect a wireless signal of a wireless communication system, and control a power supply module to supply power to a power reception device with electromagnetic waves. When the wireless signal is not detected during a first period, the power is supplied during a second period. When the wireless signal is not detected during a third period different from the first period, the power is supplied during a fourth period different from the second period. A second ratio of the fourth period to the third period is the same as a first ratio of the second period to the first period.

Growing community of inventors

Kawasaki Kanagawa, Japan

Kentaro Taniguchi