Abstract: A power transmission device includes a power transmission coil, and a power transmission side processor. A power reception device includes a power reception coil receiving electric power from the power transmission coil, a power reception power supply charging the storage battery based on the received electric power and general-purpose power supply components, a power reception side processor periodically controlling a charging current to the storage battery, and a current sensor detecting the charging current. When a value of the charging current is outside a predetermined range, the power reception side processor calculates a feedback control parameter to the power transmission power supply based on a difference between the value of the charging current and a target current value, and transmits the feedback control parameter to the power transmission side processor. The power transmission side processor controls electric power from the power transmission power supply based on the feedback control parameter.

Abstract: A power receiver apparatus is movable under water. The power receiver apparatus includes: a power receiver device configured to receive power wirelessly transmitted from a power transmitter apparatus; a power supply device including a storage battery and configured to charge the storage battery based on received power received by the power receiver device; a first sensor configured to detect a rectified voltage value rectified based on the received power; a second sensor configured to detect a charging current value to the storage battery charged by the power supply device; a processor configured to determine a power transmission voltage value corresponding to the power wirelessly transmitted from the power transmitter apparatus based on the rectified voltage value and the charging current value; and a communication device configured to transmit the power transmission voltage value determined by the processor to the power transmitter apparatus.

Abstract: A power receiving device is disposed underwater. The power receiving device includes a housing formed of a weak magnetic material, a ferromagnetic body that surrounds an outer side of the housing and is formed of a ferromagnetic material, and a power receiving coil wound around an outer side of the ferromagnetic body.

Abstract: A power receiver apparatus is movable under water. The power receiver apparatus includes: a power receiver device configured to receive power wirelessly transmitted from a power transmitter apparatus; a power supply device including a storage battery and configured to charge the storage battery based on received power received by the power receiver device; a first sensor configured to detect a rectified voltage value rectified based on the received power; a second sensor configured to detect a charging current value to the storage battery charged by the power supply device; a processor configured to determine a power transmission voltage value corresponding to the power wirelessly transmitted from the power transmitter apparatus based on the rectified voltage value and the charging current value; and a communication device configured to transmit the power transmission voltage value determined by the processor to the power transmitter apparatus.

Abstract: A power receiver apparatus is movable under water and includes a housing surrounded by a magnetic body. The power receiver apparatus includes: a power receiver device configured to receive power wirelessly transmitted from a power transmitter apparatus; a power supply device including a storage battery and configured to charge the storage battery based on the power received by the power receiver device; a power detection device configured to repeatedly detect a power value during an operation of the power supply device; and a processor configured to determine a control current value for operating the power supply device based on a comparison result between the power value which is detected by the power detection device and a previous power value which has been detected by the power detection device, and to control the operation of the power supply device based on the determined control current value.

Abstract: A power receiving device is disposed underwater. The power receiving device includes a housing formed of a weak magnetic material, a ferromagnetic body that surrounds an outer side of the housing and is formed of a ferromagnetic material, and a power receiving coil wound around an outer side of the ferromagnetic body.

Abstract: According to an aspect of the embodiment provides a communication terminal for communicating in a network. The terminal receives from another communication terminal a request includes an obscured call information for obscuring an identification information. The communication terminal obscures the identification information after receiving the request.

Abstract: According to an aspect of the embodiment provides a communication terminal for communicating in a network. The terminal receives from another communication terminal a request includes an obscured call information for obscuring an identification information. The communication terminal obscures the identification information after receiving the request.

Abstract: Upon receiving a selection of a name of a member of a desired reception destination by an input through a button operation, the caller's mobile terminal apparatus transmits a hiding-number outgoing-call request including a caller's phone number and a phone-number hiding flag to a receiver's phone number. The receiver's mobile terminal apparatus acquires, when the phone-number hiding flag is included in the received hiding-number outgoing-call request, a name corresponding to the caller's phone number, displays an incoming-call screen with acquired name on a display unit.

Abstract: A drive transmission mechanism for a biaxial extruder includes first and second output gears respectively fitted with an axial displacement on first and second output shafts which are connected to first and second screws of a biaxial extruder. A first lower gear and a first upper gear are arranged below and above the first output gear. A second lower gear and a second upper gear arranged below and above the second output gear. A reduction gear train is provided for quartering the drive force of a common drive source equally and distributing the quartered drive force to the first lower gear, the first upper gear, the second lower gear and the second upper gear.