Abstract: A wireless power transmission system comprising a wireless power transmitting device and a wireless power receiving device. The wireless power receiving device is configured to regulate power drawn during a power transfer phase to maintain a substantially steady power level that is less than or equal to a power consumption level demanded by an associated load. The wireless power transmitting device is configured to determine the presence of a foreign object by monitoring the power transmitted or the power received and identifying a characteristic change in steady state power indicative of the presence of a foreign object.

Abstract: A wireless power transmission system comprising a wireless power transmitting device and a wireless power receiving device. The wireless power receiving device is configured to enter a cloak state when a temporary pause in power transfer is desired. The wireless power receiving device may allow or deny a communication data stream with the wireless power transmitting device during the cloak state. The wireless power receiving device may request a hot start power transfer phase with the wireless power transmitting device after the cloak state. The wireless power transmitting device may or revert (reset) to a default operating state in the event that a control error packet is received during the cloak state.

Abstract: A testing assembly comprising a test object and a test object holder. The test object holder includes a body with an aperture defined therethrough. The test object is located in the aperture and an adhesive sheet is positioned over the aperture and the test object to retain the test object in place during testing.

Abstract: A method for authentication for wireless power transfer which comprises: receiving an initial certificate signed using a private key associated with an intermediate certificate authority (CA) certificate; determining that the intermediate CA certificate is revoked; determining if a replacement certificate for the initial certificate exists; and if a replacement certificate for the initial certificate exists, trusting a wireless power transfer device associated with the initial certificate.

Abstract: A system for wireless power transfer control comprising a receiver for receiving and consuming power, a transmitter for transmitting power, wherein the receiver is configured to generate and send a message to the transmitter, the transmitter is configured to control an output level transmitted to the receiver based on the message, and wherein the receiver or the transmitter is configured to perform a corrective action if a magnitude of the message exceeds a power error threshold for a threshold time.

Abstract: An inductive power transfer device for transmitting or receiving magnetic flux, the device comprising two co-planar and adjacent coils defining respective apertures and having a magnetically permeable core located to at least partially overlap both apertures; the two co-planar coils together defining a shape which is substantially equally extended in orthogonal directions.

Abstract: A wireless power transmission system comprising a wireless power transmitting device and a wireless power receiving device. The wireless power receiving device is configured to regulate power drawn during a power transfer phase to maintain a substantially steady power level that is less than or equal to a power consumption level demanded by an associated load. The wireless power transmitting device is configured to determine the presence of a foreign object by monitoring the power transmitted or the power received and identifying a characteristic change in steady state power indicative of the presence of a foreign object.

Abstract: A wireless power transmission system comprising a wireless power transmitting device and a wireless power receiving device. The wireless power receiving device is configured to enter a cloak state when a temporary pause in power transfer is desired. The wireless power receiving device may allow or deny a communication data stream with the wireless power transmitting device during the cloak state. The wireless power receiving device may request a hot start power transfer phase with the wireless power transmitting device after the cloak state. The wireless power transmitting device may or revert (reset) to a default operating state in the event that a control error packet is received during the cloak state.

Abstract: An inductive power transmitter comprising a transmission circuit having a coil, the transmission circuit tuned, adapted or optimised at or about a first frequency for inductive power transfer or object detection; an inverter operable to drive the transmission circuit at the first frequency; and a controller arranged to control the inverter to drive the transmission circuit at a second higher frequency, and to modulate a signal at the second higher frequency according to a predetermined handshake signal in order to generate a response from a predetermined non-authorised device proximate the coil.

Abstract: A method for authentication for wireless power transfer which comprises: receiving an initial certificate signed using a private key associated with an intermediate certificate authority (CA) certificate; determining that the intermediate CA certificate is revoked; determining if a replacement certificate for the initial certificate exists; and if a replacement certificate for the initial certificate exists, trusting a wireless power transfer device associated with the initial certificate.

Abstract: A testing assembly comprising a test object and a test object holder. The test object holder includes a body with an aperture defined therethrough. The test object is located in the aperture and an adhesive sheet is positioned over the aperture and the test object to retain the test object in place during testing.

Abstract: An inductive power transmitter comprising a transmission circuit having a coil, the transmission circuit tuned, adapted or optimised at or about a first frequency for inductive power transfer or object detection; an inverter operable to drive the transmission circuit at the first frequency; and a controller arranged to control the inverter to drive the transmission circuit at a second higher frequency, and to modulate a signal at the second higher frequency according to a predetermined handshake signal in order to generate a response from a predetermined non-authorised device proximate the coil.

Abstract: An inductive power transmitter comprising a transmission circuit having a coil, the transmission circuit tuned, adapted or optimised at or about a first frequency for inductive power transfer or object detection; an inverter operable to drive the transmission circuit at the first frequency; and a controller arranged to control the inverter to drive the transmission circuit at a second higher frequency, and to modulate a signal at the second higher frequency according to a predetermined handshake signal in order to generate a response from a predetermined non-authorised device proximate the coil.

Abstract: A system for wireless power transfer control comprising a receiver for receiving and consuming power, a transmitter for transmitting power, wherein the receiver is configured to generate and send a message to the transmitter, the transmitter is configured to control an output level transmitted to the receiver based on the message, and wherein the receiver or the transmitter is configured to perform a corrective action if a magnitude of the message exceeds a power error threshold for a threshold time.

Abstract: A method comprising locating an inductive power receiver in a charging zone of an inductive power transmitter sending a transmitter identifier to the receiver; sending the transmitter identifier to a remote server; the remote server verifying 5 the transmitter identifier and sending an authentication token to the wireless power transmitter; and the transmitter verifying the authentication token and enabling inductive power transfer to the receiver.

Abstract: An inductive power transmitter comprising a transmission circuit having a coil, the transmission circuit tuned, adapted or optimised at or about a first frequency for inductive power transfer or object detection; an inverter operable to drive the transmission circuit at the first frequency; and a controller arranged to control the inverter to drive the transmission circuit at a second higher frequency, and to modulate a signal at the second higher frequency according to a predetermined handshake signal in order to generate a response from a predetermined non-authorised device proximate the coil.

Abstract: A method comprising determining a level of control viability for a inductive power transfer system within a predetermined control range; and adjusting the reactance of the inductive power transfer system if the level of control viability within the predetermined control range is below a threshold.

Abstract: A method of communication of information as to receiver coil type to an inductive power transmitter to enable different modes of operation of inductive power transmitters and/or inductive power transmitters utilizing such information. An inductive power receiver may include a communications circuit for communicating with an inductive power transmitter to transmit information as to the receiver coil type. Transmitter coils of an inductive power transmitter may be driven in a first mode and also in a second mode if it receives receiver coil type information associated with the second mode. The power transmitter may include a controller configured to receive receiver coil type information from an inductive power receiver and to drive a plurality of power transmitting coils in one of a plurality of modes depending on the receiver coil type.