Fujitsu Corporation

Akiyoshi Uchida

Masakazu Taguchi

Satoshi Shimokawa

Toshikazu Kanaoka

Akihiro Itakura

Kiyoto Matsui

Hiroyasu Kawano

Kazushi Uno

Kazuyuki Ozaki

Michio Matsuura

Katsuhiko Fukuda

Toshihiro Azami

Toru Fujiwara

Yuzuru Yamakage

Hiroyasu Yoshikawa

Hirotaka Oshima

Kiyotaka Tanaka

Takanobu Kashiwagi

Seiichi Kamon

Junya Saito

Akihito Yoshii

Masunari Tamesue

A non-transitory computer-readable recording medium stores therein a judgment program that causes a computer to execute a process including acquiring a captured image including a face to which a plurality of markers are attached at a plurality of positions that are associated with a plurality of action units, specifying each of the positions of the plurality of markers included in the captured image, judging an occurrence intensity of a first action unit associated with a first marker from among the plurality of action units based on a judgment criterion of an action unit and a position of the first marker from among the plurality of markers, and outputting the occurrence intensity of the first action unit by associating the occurrence intensity with the captured image.

Judgement method, judgement apparatus, and recording medium

A power-transmission system includes a power transmitter; receivers that each receive power by electricity via a space from the power transmitter; a first determiner configured to determine based on power-data concerning rated-power each received from the receivers and the received power whether the receiver excessive in the received power and the receiver insufficient in the received power are present; a second determiner that determines whether the received power of the receiver excessive in the received power is equal to or larger than a predetermined value; and a command generator configured to transmit, to the receiver determined as having the received power equal to or larger than the predetermined value by the second determiner, a command for reducing the received power with the receivers to be equal to or smaller than a predetermined target value.

Power transmission system

A wireless power transfer control method for a system including at least one power source and at least two power receivers, wirelessly transfers power from the power source to each of the power receivers using one of magnetic field resonance and electric field resonance, including a simultaneous power transfer mode in which power is simultaneously transferred to the power receivers; and a time-division power transfer mode in which power is sequentially transferred to the power receivers by time-division switching. The wireless power transfer control method includes setting an evaluation index for each of the power receivers; and performing wireless power transfer by switching between the simultaneous power transfer mode and the time-division power transfer mode, on the basis of the evaluation index.

Wireless power transfer control method and wireless power transfer system

A power receiver includes a secondary-side resonance coil including a resonance coil part to receive power from a primary-side resonance coil by magnetic resonance; a capacitor in the resonance coil part of the secondary-side resonance coil; a series circuit of first and second switches connected in parallel with the capacitor; a first rectifier connected in parallel with the first switch, and having a first rectification direction; a second rectifier connected in parallel with the second switch, and having a second rectification direction opposite to the first rectification direction; a detector to detect a waveform of a power supply supplied to the secondary-side resonance coil; and a controller to adjust the waveform, and a phase difference between first and second signals to switch on and off the first and second switches, respectively, to adjust the power to be received by the secondary-side resonance coil.

Power receiver and power transmission system

A communication circuit receives information enabling computation of a power supply efficiency of the highest-priority power receiving device when supplying power to the power receiving devices as the power supply targets. A power supply circuit is capable of supplying power to a plurality of power receiving devices. A processor computes the power supply efficiency of the highest-priority power receiving device when supplying power to the power receiving devices as the power supply targets, decides the power receiving devices as the power supply targets so that an estimated supplied power is within a power supply capacity of the power supply circuit when supplying power to the power receiving devices as the power supply targets, and controls power supply so as to supply power to the decided the power receiving devices as the power supply targets.

Magnetic resonance power supply apparatus

A power receiver includes: a secondary-side resonant coil configured to receive electric power from a primary-side resonant coil through magnetic field resonance generated; a capacitor inserted in series in a resonant coil part of the secondary-side resonant coil; a series circuit, coupled in parallel with the capacitor, of a first switch and a second switch; a first rectifier coupled in parallel with the first switch, the first rectifier having a first rectification direction; a second rectifier coupled in parallel with the second switch and having a second rectification direction; a detector configured to detect the electric power received by the secondary-side resonant coil; and a controller configured to adjust phases of a first signal for switching on/off the first switch and of a second signal for switching on/off the second switch to adjust an amount of the electric power received by the secondary-side resonant coil.

Power receiver and power transmitting system

A power receiver includes a first secondary-side resonant coil that receives electric power from a primary-side resonant coil through magnetic field resonance; a rectifier circuit that rectifies alternating-current power; a smoothing circuit; a pair of output terminals; a switch, inserted in series on a line between the rectifier circuit and the smoothing circuit, that switches a state of the line, and a drive controller that drives the switch through a first PWM drive pattern determined by a first duty cycle and a first frequency that is less than or equal to a frequency of the magnetic field resonance. The first duty cycle is set based on a first power reception efficiency of the first secondary-side resonant coil, a first rated output of a first load, a second power reception efficiency of a second secondary-side resonant coil of another power receiver, and a second rated output of a second load.

A wireless power supply system includes: a power transmitter; and power receivers configured to receive power through magnetic field resonance or electric field resonance. The transmitter groups the receivers into first groups based on degrees of coupling between the transmitter and the respective receivers in an initial state. The transmitter calculates, for the respective first groups, charging times required to charge the receivers, and a first total charging time for the first groups. The transmitter sets degrees of coupling greater than or equal to the degrees of coupling in the initial state, and again groups the receivers into second groups based on the set degrees. The transmitter calculates, for the respective second groups, charging times required to charge the receivers and a second total for the second groups, and starts to transmit the power when the second total time is less than or equal to the first total time.

Wireless power supply system, power transmitter, and power transmission method

A power receiver which wirelessly receives power from at least one power source using one of magnetic field resonance and electric field resonance, including a power receiver coil, an internal circuit, a power detection resistor, a switch, a power reception control unit, and a communication circuit unit. The power receiver coil wirelessly receives the power from the power source, and the internal circuit uses the power obtained by the power receiver coil. The power detection resistor detects the power obtained by the power receiver coil, and the switch applies a received power voltage obtained by the power receiver coil by switching to the power detection resistor. The power reception control unit controls the power detection resistor and the switch, and the communication circuit unit performs communication with the power source, comprising detection information of a received power and power supply timing information.

Power receiver, wireless power transfer system, and kQ-value calculation method

A rechargeable battery includes: a battery body including a cylindrical outer peripheral side surface; and a power receiving coil wound in at most a single layer around the outer peripheral side surface, and electrically connected to the battery body. The power receiving coil is helically wound around the outer peripheral side surface while forming a space from which the outer peripheral side surface is exposed.

Rechargeable battery, charging system, and electronic device

A power receiver includes a secondary-side resonant coil configured to receive electric power from a primary-side resonant coil; a rectifier circuit; a smoothing circuit; a DC-DC converter connected having first and second output terminals; third and fourth output terminals disposed on an output side of the DC-DC converter and connected to a secondary battery; a sub-secondary battery having fifth and sixth output terminals; a switch configured to switch connection between the first and second output terminals, the third and fourth output terminals, and the fifth and sixth output terminals; and a controller configured, when the secondary-side resonant coil starts to receive the electric power, to control the switch to respectively connect the first and second output terminals and a load or first and second input terminals of the sub-secondary battery and to respectively connect the third and fourth output terminals and the fifth and sixth output terminals.

Power receiver

A power receiving apparatus includes a plurality of resonance coils, a power receiving circuit, and a single wire configured to start at a first terminal of the power receiving circuit and to end at a second terminal of the power receiving circuit, the single wire forming one coil or a plurality of coils connected in series, wherein the one coil or the plurality of coils connected in series and the plurality of resonance coils are placed such that the one coil or the plurality of coils connected in series are couplable to the plurality of resonance coils.

Power receiving apparatus with a plurality of resonance coils

A wireless power transfer system including a plurality of power supply coils, and wirelessly performing power transfer from the power supply coils to a power receiver, includes an entire controller. The entire controller is configured to control the power transfer performed by wirelessly transmitting and receiving powers of the power supply coils and the power receiver, in accordance with confirming power transfer ranges of the plurality of power supply coils.

Wireless power transfer system and wireless power transfer method

A power receiving device that receives power from a power supply device, according to a predetermined wireless power supply scheme for transmitting a control signal through wireless communication, includes a communication circuitry for a terminal, configured to perform communication with a terminal including a power supply to which power received by the power receiving device is supplied, a reception circuitry configured to receive a predetermined control signal from the power supply device, a memory, and a processor coupled to the memory, configured to perform power control and a setting of an operation mode of the terminal, based on the predetermined control signal, through the communication circuitry for a terminal.

Power receiving device, and information processing method

A wireless power transfer system includes a plurality of power sources and at least one power receiver, in which power transfer from the power sources to the power receiver is performed in wireless by using magnetic field resonance or electric field resonance. In the system, one of the plurality of power sources is designated as a master power source and the other one or more power sources are designated as slave power sources. In addition, the master power source controls the plurality of power sources and the at least one power receiver to perform the power transfer. This allows the system to perform the power transfer in an optimum state.

Growing community of inventors

Kawasaki, Japan

Akiyoshi Uchida