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.

The invention relates to methods and systems where a mobile phone is used to open doors of buildings and vehicles instead of a dedicated physical key. In the invention, the mobile station is configured to provide the operating power to the lock without a power chord. A mobile station app is then configured to communicate with the lock via a short-range wireless communication connection, and open and close the lock. The object of the invention is to provide an electronic software-based key and lock system that is cheaper and easier to use than the physical key.

An electronic price label system, an apparatus and a method for managing an electronic price label are disclosed. The electronic price label includes a display and communication device. In the method, the identifier in an electronic price label is read and, based on the read identifier, a command is sent to the electronic price label by means of a near field. The command can be an emptying command and/or extinguishing command for an electronic price label or it can be a command containing a new state and/or price.

A method of conducting two-way communication between a first NFC enabled device and a second NFC enabled device. The method includes transmitting a write command from the first NFC enabled device to the second NFC enabled device. A silent mode of the second NFC enabled device, in which the presence of the second NFC enabled device is hidden from the first NFC enabled device, is then activated. While the silent mode is activated, the second NFC enabled device processes the write command and writes a response in a memory of the second NFC enabled device. The silent mode is then deactivated, which triggers the first NFC enabled device to read the response in the memory of the second NFC enabled device.

In an embodiment a method for dynamic power control of a power level transmitted by an antenna of a contactless reader is disclosed. The method may include supplying a power to the antenna and performing at least one power adjusting cycle for adjusting a power level during a contactless transaction with a transponder, each power adjusting cycle including modifying the power supplied to the antenna to a predetermined level of power, performing a first measuring of a loading effect on the antenna at the predetermined level of power and adjusting the power level according to the measured loading effect.

A circuit for a communication device and a method for switching a communication device are disclosed. In an embodiment, a method includes activating at least one first antenna and at least one second antenna of a near-field communication (NFC) device for switching the NFC device between first field detection phases and second card detection phases.

A method is provided for differentiating one of a plurality of unpowered NFC transmitting devices for NFC communication with a receiving device. Each NFC transmitting device has a transmitter NFC interface and an NFC communication range. A range extending device has a power source, a transmitter communication interface, a range extender antenna, and an amplifier. One of the transmitting devices is selected and the range extending device is connected to it so that the transmitter communication interface engages the transmitter NFC interface of the selected transmitting device. This action serves to establish an extended communication range for the selected NFC transmitting device. The NFC transmitting devices are then positioned at a distance from the receiving device that is within the extended communication range, but outside the communication ranges of the other NFC transmitting devices. NFC communication is then established between the selected NFC transmitting device and the receiving device.

A system and method for configuring a water heater. The method includes capturing, with a mobile device a scannable feature of a rating plate and receiving, with the mobile device, an input indicative of a configuration selection. The method further includes configuring, with the mobile device, the water heater based on the configuration selection.

A method for identifying information on an external electronic device based on near field communication (NFC). The method includes transmitting a signal of an NFC band to the external electronic device; identifying whether the external electronic device is capable of NFC, requesting an NFC identifier (ID) from the external electronic device, and receiving the NFC ID from the external electronic device; receiving the NFC ID, reading a unique identifier from the NFC ID, and identifying a communication protocol type; identifying flag information included in the NFC ID; and determining whether the external electronic device is initially recognized and/or normally recognized through the flag information.

Described are a NFC apparatus, an electronic device and a signal processing method. The NFC apparatus includes a NFC controller, a NFC antenna, and a balanced to unbalanced converter. The balanced-to-unbalanced converter comprises a primary coil and a secondary coil. The primary coil is connected to the NFC controller. Coupled to the primary coil, the secondary coil is connected to the NFC antenna. The balanced-to-unbalanced converter is configured to convert a first current signal in the form of a pair of differential signals generated by the NFC controller to a second current signal in the form of a single-ended signal received by the NFC antenna, and amplify a magnitude of the first current signal to a magnitude of the second current signal through a coupling relationship with a ratio between a first impedance of the primary coil and a second impedance of the secondary coil as N: 1.