The present invention relates to a communication system comprising a removable device comprising a display screen, and a docking device apt to receive the removable device.

Each of the removable device and the docking device comprises an extreme high frequency communication chip, the communication chips being positioned opposite each other when the removable device is received in the docking device and are apt to exchange digital data between each other.

The display screen is apt to display images from the digital data sent by the communication chip of the docking device to the communication chip of the removable device.

An example method is provided for detecting and classifying foreign objects, performed at a computer system having one or more processors and memory storing one or more programs configured for execution by the one or more processors. The method includes obtaining a plurality of electrical measurements while a wireless-power-transmitting antenna is transmitting different power beacons. The method also includes forming a feature vector according to the plurality of electrical measurements. The method further includes detecting a presence of one or more foreign objects prior to transmitting wireless power to one or more wireless power receivers by inputting the feature vector to trained one or more classifiers, wherein each classifier is a machine-learning model trained to detect foreign objects distinct from the one or more wireless power receivers.

A metasurface for wireless power transfer includes an insulated support structure. A plurality of magnetically coupled resonators are insulated and supported by the insulated support structure. The plurality of coupled resonators are configured and arranged to couple within and shape a magnetic near field distribution from a transmitter into a target distribution toward a target receiver. The plurality of coupled resonators form a non-uniform impedance distribution pattern to provide the shape of the target distribution. The insulated support structure can be thin and flexible, allowing it to be worn by a person, for example to transfer power to an implanted device.

A wireless power transfer system comprises at least one power receiver (105) for receiving a power transfer from the power transmitter (101) via a wireless inductive power transfer signal. Configurers (207, 306) of the power transmitter and receiver may perform a configuration process to determine a set of power transfer parameter values which are used in a first power transfer. The power transfer parameter values and a first identity for the first power receiver (105) are stored. After a detection of an absence of the power receiver by a first controller (211), a detector (213) may detect a presence of a candidate power receiver. If the candidate power receiver is detected within a given duration and has an identity matching the first identity, an initialization processor (215) initializes a second power transfer using the set of stored parameter values. Otherwise it discards the set of stored parameter values.

A method of wirelessly transmitting power includes: causing a power transmission circuit to transmit, to a master power reception circuit, a portion of power it is capable of transmitting; adjusting operation of a slave power reception unit until a first rectified voltage produced by the master power reception circuit and a second rectified voltage produced by the slave power reception unit are equal; causing the power transmission circuit to transmit additional power to the slave power reception unit, resulting in the first and second rectified voltages being unequal; and adjusting operation of the slave power reception unit until the first and second rectified voltages are again equal. A dummy load is connected to the slave power reception unit prior to causing the power transmission circuit to transmit the additional power, and is disconnected once the first and second rectified voltages are equal.

Embodiments presented herein are generally directed to techniques for separately transferring power and data from an external device to an implantable component of a partially or fully implantable medical device. The separated power and data transfer techniques use a single external coil and a single implantable coil. The external coil is part of an external resonant circuit, while the implantable coil is part of an implantable resonant circuit. The external coil is configured to transcutaneously transfer power and data to the implantable coil using separate (different) power and data time slots. At least one of the external or internal resonant circuit is substantially more damped during the data time slot than during the power time slot.

A magnetic conductive substrate is provided and is used for wireless charging or wireless communication. The magnetic conductive substrate includes a first magnetic conductive layer, a second magnetic conductive layer, and a third magnetic conductive layer. The first magnetic conductive layer has a first magnetic permeability, the second magnetic conductive layer has a second magnetic permeability, and the third magnetic conductive layer has a third magnetic permeability. The second magnetic conductive layer is disposed between the first magnetic conductive layer and the third magnetic conductive layer, the first magnetic permeability is different from the second magnetic permeability, and the second magnetic permeability is different from the third magnetic permeability.

A wireless power receiver coil is attached to a landing gear of a drone. The wireless power receiver coil is closer to the drone when the landing gear is in a retracted position and farther away from the drone when the landing gear is in an extended position. A length of the wireless power receiver coil may be the same length when the landing gear is in the retracted position and in the extended position. The wireless power receiver coil may be in a first orientation when the landing gear is in the retracted position and the wireless power receiver coil may be in a different orientation when the landing gear is in the extended position. The wireless power receiver coil may have a first shape when the landing gear is in the retracted position and may have a second shape when the landing gear is in the extended position.

There is described an electric power base (100) comprising: a casing (105), a wireless transmitter (110) of electric energy placed in the casing (105), and an interface surface (120) placed external to the casing (105), at said wireless transmitter (110), which is adapted to receive in contact a device (500) to be powered, characterized in that said interface surface (120) is made available by at least one microsuction body (125).

A method and a device for making available electric charge in order to charge an electronic card including a near-field communication module by way of a terminal. The terminal has what is known as a reader mode in which it is able to supply power to the card in near-field mode and receive data from the card. The method includes the following steps, on the terminal, set to reader mode, so as to generate an electromagnetic field able to charge such an electronic card: initializing the communication between the terminal and the card; receiving a message from the card, the message containing at least one datum telling the terminal that it should maintain the electric charge; and maintaining the electric charge while remaining in reader mode.