A communication method includes: receiving out-of-band communication modes supported by a power transmitter (PTX) and transmitted by the PTX via a first communication mode, wherein the first communication mode comprises an enhanced in-band communication mode; matching the out-of-band communication modes supported by the PTX with out-of-band communication modes supported by a power receiver (PRX); and when the out-of-band communication modes supported by the PTX and the out-of-band communication modes supported by the PRX share an identical out-of-band communication mode, using the identical out-band communication mode to return data to the PTX or to return a result of the matching between the out-of-band communication modes to the PTX. Embodiments of the present disclosure can be used to achieve compatibility with multiple communication modes and to support high-speed communication in a wireless charging system.

A rotary position sensor is includes a static portion that comprises a first board and a second board and a rotatable portion that comprises a third board. The second board comprises a first planar coil; and the third board comprises a second planar coil as well as means for generating luminance. The first board comprises means for receiving the generated luminance and the first planar coil of the second board is configured to transmit power to said second planar coil of said third board via inductance. The power received by said second planar coil is configured to supply a current to said means for generating luminance; and said means for generating luminance is configured to emit a luminance signal which has a luminance level.

This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for wireless power transmission. A wireless power transmission apparatus may transmit multiple wireless power signals to a wireless power reception apparatus configured to combine the power from the multiple wireless power signals. The wireless power reception apparatus may provide a combined wireless power signal to a load such as a battery charger or electronic device. In some implementations, each set of primary coil and secondary coil may utilize low power wireless power signals (such as 15 Watts or less) in accordance with a wireless charging standard. By combining power from multiple low power wireless power signals, the wireless power reception apparatus may support higher power requirements of an electronic device. Multiple communication channels may be established between the wireless power transmission apparatus and the wireless power reception apparatus.

An antenna configured for near field communication includes a first coil for transmitting and receiving signals having a first frequency and a second coil for transmitting and receiving signals having a second frequency greater than at least twice the first frequency. The first and second coils are magnetically coupled with a coupling coefficient greater than 0.5.

An inductive power outlet is disclosed. The inductive power outlet has a primary inductor, for wirelessly powering an inductive power receiver. The inductive power outlet has a secondary inductor. The primary inductor and the secondary inductor form a resonant frequency. The inductive power outlet comprises a driver generating an oscillating voltage to the primary coil at a frequency higher than the resonant frequency. The inductive power outlet comprises a signal detector. The signal detector comprises a peak detector configured to detect voltage peaks across the primary inductor or current peaks of a current supplied to the primary inductor. The signal detector comprises a processor configured to determine a frequency of either the voltage peaks or the current peaks.

A device and method for wireless charging user a speaker coil. In one embodiment, a device may include a processor, memory, at least one speaker coil configured to reproduce audio signals and receive wireless power from a wireless power source, and a switch configured to switch the at least one speaker coil between reproducing the audio signals and receiving the wireless power from the wireless power source. A method may include identifying a device that includes at least one speaker coil, receiving, via the at least one speaker coil, audio signals, and receiving, via the at least one speaker coil, wireless power. Various other methods, systems, and computer-readable media are also disclosed.

A power supply apparatus includes a power supply unit configured to wirelessly supply power to an electronic apparatus, a communication unit configured to transmit, to the electronic apparatus, information indicating whether to perform a foreign object detection process for detecting a foreign object, and a control unit configured to cause the communication unit to transmit the information to the electronic apparatus before outputting of predetermined power to the electronic apparatus.

In one aspect, an electronic device for continuous and simultaneous powering and data transfer is provided, the electronic device comprising: an inductive power receiver operable to generate a power signal from a sensed magnetic field, the power signal; an LC tank and diode pair electrically coupled to the power receiver and operable to obtain the power signal, the LC tank and diode pair cooperating to generate a corresponding clipped signal thereof; and an antenna comprising a high-pass filter, the antenna electrically coupled to the diode pair and operable to emit a pulse-train by high-pass filtering the clipped signal.

The present invention is directed to a hearing aid which includes a lateral ear canal assembly and a medial ear canal assembly. In embodiments of the invention the medial ear canal assembly may include smart circuitry adapted to control parameters and outputs of the medial ear canal assembly. In embodiments of the invention various methods and circuitry are described, wherein the methods and circuitry are adapted to improve the performance and efficiency of the hearing aid.

Method for activating predefined functions, implemented in a host appliance integrating or linked to a wireless charging device, and including the steps of: detecting that a mobile appliance has just been positioned on a reception surface of the wireless charging device in order to be recharged; following the detection that the mobile appliance has just been positioned on the reception surface, activating or deactivating at least one predefined first function performed by the host appliance, in addition to recharging the mobile appliance; then, detecting that the mobile appliance has just been moved away from the reception surface; following the detection that the mobile appliance has just been moved away from the reception surface, activating or deactivating at least one predefined second function performed by the host appliance.