A system and a method for charging a mobile device in a vehicle are provided. A method, performed by an electronic device, for controlling a wireless charging device in a vehicle includes: identifying at least one mobile device in the vehicle; obtaining state information of the identified mobile device; obtaining state information of the vehicle; and controlling power of a plurality of wireless charging devices in the vehicle based on a state of the mobile device and a state of the vehicle.

Provided are a device and method for performing authentication in a wireless power transfer system. Provided is an authentication method in a wireless power transfer system including receiving a first packet including indication information on whether a target device supports an authentication function from the target device; transmitting, when the target device supports an authentication function, an authentication request message to the target device; receiving an authentication response message including a certificate on wireless charging from the target device in response to the authentication request message; and confirming authentication of the target device based on the authentication response message.

A smart power hub for a sleep aid device includes a data communication system for transmitting and receiving data between the sleep aid device and a user communication device and/or network. The data communication system may include a network module for providing wireless data communication access to the user communication device and/or network with respect to the sleep aid device. The smart power hub may be in data communication with the sleep aid device via a wired connection. The wired connection may include a cable having length greater than two meters. The smart power hub may also include a power system for transmitting power to the sleep aid device. The cable may also couple the power system to the sleep aid device for delivering a supply of power to the sleep aid device.

Wireless power transmission methods, wireless power transmitters, wireless power receiving method, and wireless power receivers are disclosed. Wireless power is transmitted using power signal comprising a multi-sine waveform within a bandwidth to drive a plurality of antennas. Beam-forming coefficients are generated and the relative phases of the power signal used to drive the antennas is controlled by the beam-forming coefficients.

In an embodiment, a method for wirelessly transferring power through a low-e window includes: causing a first current to flow through a transmitter coil disposed in a first outer surface of the low-e window, the first current having a first frequency; inducing, with the first current, a second current to flow through a receiver coil disposed in a second outer surface of the low-e window, the low-e window having a metal or metal oxide layer having a first thickness; generating a voltage based on the second current; and powering an electronic device coupled to the receiver coil with the generated voltage, where the first frequency is associated with a first skin depth of the metal or metal oxide layer, and where the first skin depth is larger than the first thickness.

A wireless power transmission apparatus for wirelessly transmitting power to a wireless power reception apparatus is provided. The wireless power transmission apparatus includes a power transmitting circuit including a coil and at least one processor to control to transmit, via the power transmitting circuit, a pilot power with changing a frequency of the pilot power within a predetermined frequency range, obtain a magnitude of power wirelessly transmitted to a wireless power reception apparatus based on the transmitted pilot power, determine an operating frequency based on the obtained magnitude, and control to transmit, via the power transmitting circuit, a driving power having the operating frequency to drive the wireless power reception apparatus.

An electronic device may have a power system. The power system may receive power such as wireless power or wired power and may use a portion of the received power to charge a battery. Power consumption by control circuitry in the device can be adjusted by deactivating or activating processor cores in the control circuitry and by selectively starting or stopping software activities. By selectively reducing power consumption by circuitry in the electronic device other than battery charging circuitry in the power system that is charging the battery, additional power may be made available to charge the battery and/or battery capacity can be extended. The electronic device may reduce non-battery-charging activities in the device in response to information gathered with sensors such as motion and temperature information, information from the power system, information on device location, information on software settings, and other information.

A wireless power transfer device includes a wireless power transfer unit that wirelessly transfers power to a plurality of other devices and a notification unit that provides notification that wireless power transfer to a third wireless power transfer device different from a second wireless power transfer device is not available or provides notification that the wireless power transfer to the third wireless power transfer device is available in the case where wireless power transfer to the second wireless power transfer device is performed.

A communication device includes: a coil disposed around a core area of the communication device; a processor disposed in the core area and configured to establish communication with an external device through the coil; and a discrete element disposed on the coil and connected to the processor through a via.

Method and apparatus for wirelessly transmitting and receiving power between devices are provided. A first device may convert power into RF energy and transmit the RF energy to a second device. In some implementations, the first device may steer the RF energy using beamforming techniques to the second device. The second device may receive and convert the RF energy into power for the second device. In some implementations, the second device may be powered solely or in part by power transmitted by the first device. In some implementations, the first device may include two or more RF energy harvesters and a power combiner. The power combiner may combine power from the two or more RF energy harvesters to power the second device and/or charge a battery.