Abstract: A wireless power transmitter includes a resonator including a variable resonator; an inverter configured to operate the resonator; and, a controller configured to adjust the variable resonator in response to a change in a level of power input to the inverter.

Abstract: A wireless power transmitting and receiving device includes: a coil including a first section having a first number of turns and configured to receive power and a second section having a second number of turns different from the first number of turns and configured to transmit power and a converting and rectifying unit configured to: rectify the power received through the coil, convert externally-supplied power into alternating current power, and apply the alternating current power to the coil.

Abstract: A wireless power transmitting method performed in a wireless power transmitting apparatus wirelessly transmitting power includes determining reception strength of a short-range wireless communication channel, adjusting an interval of a short beacon signal in response to a change in reception strength; and transmitting the short beacon signal at the interval.

Abstract: A wireless power receiver in a wearable device includes a receiving coil wound around an internal part and a power circuit configured to receive power from the receiving coil and provide the power to the wearable device.

Abstract: A wireless power transmitter for receiving external power from a power adaptor includes an output control signal generator configured to generate an output control signal from the external power, and supply the output control signal to the power adaptor; and a wireless power generator configured to generate power to be wirelessly transmitted to a wireless power receiver using the external power supplied by the power adaptor in response to the output control signal, and wirelessly transmit the generated power to the wireless power receiver.

Abstract: A non-contact power transmission device includes a power transmission unit configured to contactlessly provide electric power; a controller configured to provide location information of the non-contact power transmission device; and a communications unit configured to transmit the location information and product information received from a non-contact power reception device to a server, and receive an approval to transmit electric power to the non-contact power reception device from the server.

Abstract: There are provided an apparatus and a method of receiving power wirelessly, and a system for supplying power wirelessly using the same. The apparatus for receiving power wirelessly may include a power receiving unit receiving power wirelessly in a non-contact manner, a switching unit operating the power receiving unit, and a controlling unit controlling an output voltage by adjusting an OFF switching operation of the switching unit.

Abstract: There are provided an apparatus apparatus for transmitting power wirelessly. The apparatus for transmitting power wirelessly may include a boosting unit boosting an input voltage, and an inverter unit inverting the boosted voltage output from the boosting unit to transmit power wirelessly. The inverter unit and the boosting unit are controlled by the same switching element.

Abstract: A wireless power reception device may include a plurality of wireless power receiving units receiving power wirelessly, and a plurality of power management units respectively connected to the plurality of wireless power receiving units and outputting charging currents according to a plurality of power control signals by using power received from the plurality of wireless power receiving units.

Abstract: An input apparatus for transmitting received user selection information to a portable terminal held therein may include: a power transmission unit transmitting power to a portable terminal in a non-contact manner. The power transmission unit may include a power transmission coil disposed in a holding unit in which the portable terminal is held and transmitting power to the portable terminal in the non-contact manner.

Abstract: A wireless charger optimized for charging efficiency of portable terminals (e.g., mobile phones) of different sizes has a housing including within it laterally spaced side supports and a bottom support for cradling an inserted portable terminal. The side supports and the bottom support are interlocked for coordinated movement such that the bottom support is moved by a predetermined amount according to movements of the side supports. This arrangement optimizes relative placement of the charger's transmitting coil and the portable terminal's receiving coil.

Abstract: There are provided a wireless mouse including: a charging unit receiving power in a non-contact manner to charge a battery with the received power; a movement detection unit detecting movements of the wireless mouse made by a user; and a controlling unit controlling whether or not a charging operation of the charging unit is performed, depending on the movements of the wireless mouse, a mouse pad including: a pad body having a predetermined area; a charging region provided on a portion of a surface of the pad body and transmitting power in a non-contact manner; and an operating region provided on the remainder of the surface of the pad body to be separated from the charging region and assisting in a pointing operation of the mouse, and a wireless mouse apparatus including the wireless mouse and the mouse pad.

Abstract: A non-contact type power transmitting apparatus may include a rectifying unit rectifying alternating current (AC) power, a power converting unit converting the power rectified by the rectifying unit into direct current (DC) power through a single power converting operation and switching and transmitting the DC power, and a power transmitting coil transmitting transmission power transmitted from the power converting unit externally in a non-contact scheme.

Abstract: There is provided a wireless charging system, including: a wireless power transmitting module including at least one power transmitter transmitting power and at least one wireless power receiving module receiving the power, wherein the wireless power transmitting module controls the power, which is transmitted to the wireless power receiving modules corresponding to the power transmitters, from the power transmitters, depending on targeted voltage gains of the wireless power receiving modules corresponding to the power transmitters.

Abstract: A wireless power receiver according to an exemplary embodiment in the present disclosure may include a resonant tank receiving a power signal and varying a resonant frequency in response to a control signal; and a determining unit determining a wireless power transmission mode on the basis of the power signal and outputting the control signal depending on a determination result.

Abstract: A wireless power receiver may include a case formed of metal; and an insulator insulating one surface of the case to form at least two receiving electrodes. The at least two receiving electrodes form a capacitor in combination with at least two transmitting electrodes and receive power transmitted from the at least two transmitting electrodes.

Abstract: A non-contact type power receiving apparatus, of which a voltage level of output power varies depending on a rated voltage of a battery, includes: a power receiving coil unit receiving a power in a non-contact scheme; a rectifying/multiplying unit rectifying the received power depending on controlling thereof and selectively multiplying a voltage level of the rectified power; and a controller selectively controlling a rectifying operation or a multiplying operation of the rectifying/multiplying unit to be performed depending on a selection signal.

Abstract: In a non-contact type power receiving apparatus, two power receiving coils may share a single rectifying circuit. A non-contact type power receiving apparatus may include a first power receiving coil and a second power receiving coil, and a selective rectifying unit rectifying power from one of the first and second power receiving coils which receives the power from an external power transmitting coil in a non-contact scheme.

Abstract: An apparatus for receiving power wirelessly may include a power receiving unit wirelessly receiving the power in a non-contact manner, a switching unit operating the power receiving unit, and a controlling unit controlling an output voltage by adjusting an switching-on operation of the switching unit.

Abstract: A non-contact type power transmission apparatus and method thereof, includes a control unit configured to provide assigned location information to a device. The apparatus also includes a display unit configured to display location-based service data provided to the device based on the location information.