A power transmission apparatus includes a power transmission unit configured to contactlessly transmit power to an electronic device, a communication unit configured to communicate with the electronic device, and a control unit, wherein the control unit acquires information on a power level receivable by the electronic device via the communication unit, wherein in a case where an instruction for increasing or reducing the power transmitted from the power transmission unit is received from the electronic device via the communication unit, the control unit changes the power transmitted from the power transmission unit, and wherein an amount of the power changed by the control unit at a time according to the instruction varies depending on the power level receivable by the electronic device.

An electrically conductive material configured having at least one opening of various unlimited geometries extending through its thickness is provided. The opening is designed to modify eddy currents that form within the surface of the material from interaction with magnetic fields that allow for wireless energy transfer therethrough. The opening may be configured as a cut-out, a slit or combination thereof that extends through the thickness of the electrically conductive material. The electrically conductive material is configured with the cut-out and/or slit pattern positioned adjacent to an antenna configured to receive or transmit electrical energy wirelessly through near-field magnetic coupling (NFMC). A magnetic field shielding material, such as a ferrite, may also be positioned adjacent to the antenna. Such magnetic shielding materials may be used to strategically block eddy currents from electrical components and circuitry located within a device.

Technologies are disclosed herein for utilizing near field communication (NFC) to improve the security, performance, and configuration of computing systems. In particular, NFC can be utilized to power an NFC-equipped server computer on or off, to log directly into an operating system executing on the NFC-equipped server computer, to stream firmware debugging data from an NFC-equipped server computer to an NFC-equipped mobile device, to initiate the update or recovery of firmware, to provide hardware inventory data, or to pair hardware devices. Firmware debugging data can also be streamed from a firmware to an NFC-equipped mobile device. NFC can also be utilized to disable functionality provided by a mobile device while the device is in motion, such as when a user of the mobile device is operating a motor vehicle.

The present invention provides a card read response method, apparatus, and system, and a signal transceiving device. The method comprises: receiving a carrier signal having a frequency of 125 KHz by using an antenna having a resonance frequency of 13.56 MHz; amplifying the carrier signal, and performing analog-to-digital conversion on the amplified signal to obtain a digital signal; acquiring signal characteristics of the carrier signal according to the digital signal, the signal characteristics comprising at least a frequency and a phase; and encoding response data at the frequency of the carrier signal to obtain an encoded signal, determining an initial phase of the outputted encoded signal according to the phase, and outputting the encoded signal via the antenna so that the encoded signal and the carrier signal are superimposed at the same phase. According to the signal response method, apparatus, and system of the present invention, a small antenna having a resonance frequency of 13.56 MHz can be used to send and receive a signal having a frequency of 125 KHz, so as to meet the demand for device miniaturization.

An electronic device may include a transmission circuit and an inductive element. The inductive element may be configured to generate a wireless communication signal based on a current. The transmission circuit may be configured to output the current based on a supply voltage; to increase an intensity of the current, from zero to an increased intensity that is less than or equal to a target value, by alternately repeating a first increase and a first decrease of the intensity of the current, in a first time interval; to decrease the intensity of the current, from the increased intensity to zero, by alternately repeating a second increase and a second decrease of the intensity of the current, in a second time interval.

In one embodiment, the mobile device includes an NFC tag for near field communication. The NFC tag may include a first storage device and a second storage device. Personal data is stored on the first storage device, which is not accessible by a NFC reader device. Prior to a transaction, the personal data is transmitted from the first storage device to the second storage device, where the data is readable or accessible by the reader device. After transmission of the data to the reader device, the data on the second storage is erased. In this respect, the data is not available for eavesdropping by an unauthorized reader device. In one embodiment, the data remains stored in the first storage device and available for future use. In another embodiment, the data comprises financial product data.

Methods and apparatus for a signal isolator having reduced parasitics. An example embodiment, a signal isolator and include a first metal region electrically connected to a first die portion, a second die portion isolated from the first die portion, and a second metal region electrically connected to the second die portion. A third metal region can be electrically isolated from the first and second metal regions and a third die portion can be electrically isolated from the first, second and third metal regions. In embodiments, the first metal region, the second metal region, and the third metal region provide a first isolated signal path from the first die portion to the second die portion.

In one embodiment, the mobile device includes an NFC tag for near field communication. The NFC tag may include, a first storage device and a second storage device. Personal data is stored on the first storage device, which is not accessible by a NFC reader device. Prior to a transaction, the personal data is transmitted from the first storage device to the second storage device, where the data is readable or accessible by the reader device. After transmission of the data to the reader device, the data on the second storage is erased. In this respect, the data is not available for eavesdropping by an unauthorized reader device. In one embodiment, the data remains stored in the first storage device and available for future use. In another embodiment, the data comprises financial product data.

An electronic device according to various embodiments may include: a housing; a communication module comprising circuitry coupled to at least one surface of the housing configured to be connected to an external device including multiple near field communication (NFC) antennas; and a processor, wherein the processor may be configured to: obtain device information of the external device from the external device based on the external device being coupled; generate antenna setting information for setting the multiple NFC antennas of the external device based on at least one of the device information of the external device and device information of the electronic device; and control the electronic device to transmit the generated antenna setting information to control the setting of the multiple NFC antennas.

A device is provided that includes a first platform having a first side, and a second platform having a second side positioned within a predetermined distance to the first side. The device also includes an actuator configured to cause a relative rotation between the first platform and the second platform such that the first side of the first platform remains within the predetermined distance to the second side of the second platform. The device also includes a probe mounted to the first platform, and a plurality of probes mounted to the second platform. The device also includes a signal conditioner coupled to the plurality of probes. The signal conditioner may select one of the plurality of probes based on an orientation of the first platform relative to the second platform. The signal conditioner may then to use the selected probe for wireless communication with the probe on the first platform.