The present invention is related to an apparatus and method for performing communication in a wireless power transfer system. The description discloses a wireless power transmitter including a communication/control unit configured to perform a negotiation for a first available power indicator with a wireless power reception apparatus; and a power conversion unit configured to transmit a wireless power to the wireless power reception apparatus by generating magnetic coupling in a primary coil according to the first available power indicator. The wireless power transmitter provides an effect that a wireless power transmission apparatus is available to obtain status and authority as a master/transmitter depending on a situation, and current ambient situation/environment is reflected in real time.

An apparatus for facilitating wireless communication that includes a base having a reference plane; a plurality of coils disposed on the base, the coils having elevation angles other than zero with respect to the reference plane and being tuned to a near field communication frequency; an input/output terminal; and a switching device selectively coupling the coils to the input/output terminal.

A non-contact power reception apparatus is provided, in which a power reception coil for a charging system and a loop antenna for an electronic settlement system are mounted on a battery pack and a cover case of a portable terminal such that the power reception coil is arranged in the center thereof and the loop antenna is disposed outside the power reception coil, so that a mode of receiving a wireless power signal and a mode of transmitting and receiving data are selectively performed, thereby preventing interference from harmonic components and enabling non-contact charging and electronic settlement using a single portable terminal. A jig for fabricating a core to be mounted to the non-contact power reception apparatus is provided.

A non-contact power reception apparatus is provided, in which a power reception coil for a charging system and a loop antenna for an electronic settlement system are mounted on a battery pack and a cover case of a portable terminal such that the power reception coil is arranged in the center thereof and the loop antenna is disposed outside the power reception coil, so that a mode of receiving a wireless power signal and a mode of transmitting and receiving data are selectively performed, thereby preventing interference from harmonic components and enabling non-contact charging and electronic settlement using a single portable terminal. A jig for fabricating a core to be mounted to the non-contact power reception apparatus is provided.

A method of a charging apparatus for controlling wireless charging is provided. The method includes detecting an electronic device, determining a charging method corresponding to the detected electronic device, and wirelessly charging the electronic device by selecting a coil corresponding to the determined charging method.

The present application describes a wireless power reception device comprising: a power pickup circuit configured to receive, from a wireless power transmission device, a wireless power generated on the basis of magnetic coupling in a power transmission phase; and a communication and control circuit configured to transmit, to the wireless power transmission device, a configuration packet including first dual data stream information, or to receive, from the wireless power transmission device, a capability packet including second dual data stream information. Upper layer data can be effectively exchanged by clearly recognizing whether the upper layer data is bidirectionally transmitted between the wireless power transmission device and the wireless power reception device, and accuracy of power loss and saving of processing resources can be achieved by synchronizing the timing of calculating the power loss between the wireless power transmission device and the wireless power reception device.

The present invention relates to a wireless power transmission system and, more particularly, to an apparatus and a method for performing handover between heterogeneous communication methods. A wireless power transmission apparatus and reception apparatus can indicate whether to support out-band communication thereof on the basis of an out-band flag. The wireless power transmission apparatus can request the wireless power reception apparatus to start a handover by using a bit pattern requesting the handover. The handover procedure to out-band may be performed in a negotiation phase or may be performed in a separate handover phase. Information for establishing an out-band communication connection can be transmitted from the wireless power reception apparatus to the wireless power transmission apparatus through in-band communication. Also, even after the handover to the out-band is completed, it is possible to periodically or intermittently perform the in-band communication in a power transmission phase to detect a swap of the wireless power reception apparatus.

Systems, methods and apparatus for wireless charging are disclosed. A method for decoding data includes demodulating voltage or current waveform in each tank circuit of a plurality of inductive power transfer circuits to obtain at least one demodulated signal from each tank circuit, capturing a bit sequence from each demodulated signal by clocking signal state of each demodulated signal through a direct memory access (DMA) circuit, streaming bit sequences received from the DMA circuit into a plurality of data streams, and decoding one or more messages from the plurality of data streams.

Systems, methods and apparatus for wireless charging are disclosed. A charging device has a charging circuit that includes a charging coil located proximate to a surface of the charging device, a pulse generating circuit, and a controller. The pulse generating circuit may be configured to provide a pulsed signal to the charging circuit, where each pulse in the pulsed signal includes a plurality of cycles of a clock signal that has a frequency greater or less than a nominal resonant frequency of the charging circuit. The controller may be configured to detect a change in resonance of the charging circuit based on a difference in response of the charging circuit to first and second pulses transmitted in the pulsed signal. The controller may be further configured to determine that a chargeable device has been placed in proximity to the charging coil based on the difference in responses.

A wireless power transmission apparatus for a vehicle is provided. The apparatus includes a magnetic field shielding sheet that is disposed to shield a magnetic field and a wireless power transmission antenna that is attached to one surface of the magnetic field shielding sheet. Additionally, a wireless communication antenna is attached to the surface of the magnetic field shielding sheet to which the wireless power transmission antenna is attached.