Abstract: In a general aspect, an electronic device can include a device configured to transmit data by intracorporeal current. The device configured to transmit data by intracorporeal current can include a first electrode configured to be capacitively coupled with a body of a user or capacitively coupled in an intracorporeal current conduction path of the electronic device. The electronic device can further include a circuit configured to electrically bias the first electrode. The circuit can include an electric coil arranged near the first electrode. The electric coil can be configured to, in response to an alternating-current (AC) signal, generate an alternating magnetic field having field lines incident on the first electrode. The field lines incident on the first electrode can induce a current in the first electrode, where the current induces an electric field that generates an intracorporeal current.

Abstract: A front-end circuit with a tunable filter is disclosed. In an embodiment, the front end circuit includes a first signal path connected to an antenna connection, a first filter arranged in the first signal path, wherein the first filter is tunable within a first frequency range, and an extra signal path and a first fixed filter arranged therein, wherein the first fixed filter has a passband for an extra frequency band, wherein the first fixed filter is not tunable, and wherein the extra frequency band is arranged outside or inside the first frequency range. The front end circuit further includes a narrowband antenna tuner configured to be set to a respective tunable frequency range, wherein the narrowband antenna tuner is arranged between the first filter, the first fixed filter and the antenna connection in the first and second signal paths.

Abstract: In a general aspect, a portable electronic device can include a digital display including a first electrically conductive plane. The first electrically conductive plane can be configured to neutralize electromagnetic radiation produced by the digital display. The portable electronic device can also include a data transmission device configured to transmit data by intracorporeal current. The data transmission device can include a first electrode that is configured to be capacitively coupled with a body of a user and a second electrode that includes the first electrically conductive plane. The first electrically conductive plane can be electrically coupled with an electrical ground of the data transmission device. The portable electronic device can further include a printed circuit including a second electrically conductive plane. The second electrically conductive plane can be included in the second electrode of the data transmission device.

Abstract: A method of streaming an audio signal from an audio transmission device to first and second audio receiver devices via a Bluetooth link using a protocol that requires an audio data packet to be retransmitted if a positive packet receipt is not received. The first audio receiver device is synchronized to the audio transmission device to enable the first audio receiver device to receive an audio signal stream from the audio transmission device, the second audio receiver device is synchronized to the audio transmission device to enable the second audio receiver device to eavesdrop the audio signal stream to the first audio receiver device. When a positive packet receipt acknowledgement is not transmitted from the first audio receiver device to the audio transmission device, the audio transmission device repeats transmission of that audio data packet irrespective of whether the packet has been correctly received by the first audio receiver device.

Abstract: A method for providing a multi number service using a universal integrated circuit card (UICC) comprises the steps of: according to a command received from the outside of a UICC, selecting any one subscriber identification information set among a plurality of subscriber identification information sets stored in a memory allocated to a subscriber identification information set managing application; and activating the selected subscriber identification information set.

Abstract: Systems and methods for reducing connection latency are described herein. More particularly, this specification relates to shortening connection latency between devices operating according to a Bluetooth protocol. Connection latency can be reduced by using the receipt of a wireless packet as a trigger for selectively accelerating a transmission rate of advertising packets. By selectively accelerating the transmission rate advertising packets, a connection interval between two devices can be shortened.

Abstract: A multimode wireless communication terminal that communicates using a first radio access technology (RAT) and a second RAT determines whether the first and second RATs are in an active state, and modifies a maximum transmit power limit of the first RAT based on a voice codec rate of a voice transmission on the second RAT when the first RAT and the second RAT are in the active state concurrently, wherein the second RAT is conducting the voice transmission in the active state. In an alternative embodiment, the limit is modified based on a transmit power status of the second RAT or on a transmission type of the first RAT.

Abstract: A mobile device case is disclosed. The mobile device case includes a housing comprising a cavity configured to partially enclose a mobile device, a first and second foldable panel having first and second speakers pivotally connected to the housing, wherein the first and second foldable panels rotate from a folded position where the first and second foldable panels are configured to be folded on a back surface of the bottom surface of the cavity to an unfolded position where the first and second foldable panels extend laterally in a parallel way relative to the bottom surface of the cavity.

Abstract: A resonance frequency of a near field communication (NFC) antenna module may be set to be equal to a first frequency by a resonance unit included in the NFC antenna module. The NFC module may include a matching circuit connected to the NFC antenna module. The matching circuit may include terminals exposed to the outside such that the antenna module is detachable from the matching circuit.

Abstract: A data transmission structure comprises a system and a visual interface display apparatus. The system includes a host, a receiving unit and at least a transmission module. The host is coupled with the receiving unit and the transmission module. The visual interface display apparatus includes a receiving module and a display module including a display panel. When the receiving module receives the transmission data transmitted by the transmission module, the display panel couples the response data corresponding to the transmission data to the system through at least an electrode of the display panel, and the response data is received by the receiving unit.

Abstract: A method envisions that a first device equipped with a wireless communication channel performs discovery operations and becomes discoverable on the wireless communication channel. The attributes of the devices detected during such operations are sent from the first device operating as a client, together with its unique system identification code, to a computer server that implements a detection service in proximity in a certified manner and is associated with a database comprising a list of attributes for devices registered with the service using such database. In addition, the server computer records, for example, in such database, the detections of such attributes of detected devices.

Abstract: A device comprises a plurality of distributed transceivers, a plurality of distributed beamformers, a baseband processor, and a network management engine. The distributed transceivers perform beamforming in a radio frequency band. The distributed beamformers, however, performs beamforming in an intermediate frequency band. Each of the distributed transceivers is coupled to a corresponding one of the distributed beamformers. Each transceiver-beamformer pair is coupled to the baseband processor utilizing a same communication medium such as a cable. For transmission, a data stream generated at baseband is converted to intermediate frequencies. With a low-power transmission, the distributed beamformers transmit the data stream wirelessly in the intermediate frequencies to a receiving device. With a normal-power transmission, the distributed transceivers transmit the data stream to the receiving device in the radio frequency band. The transceivers and the beamformers are turned OFF whenever not being used.

Abstract: A transmission system using the Bluetooth Low Energy is provided. The transmission system includes a broadcast device transmitting broadcast data, and a scanning device receiving the broadcast data and determining whether to execute a response action according to the broadcast data. The response action includes replying with request data to the broadcast device, and the broadcast device determines whether to transmit parameter data to the scanning device according to the request data in order to make the scanning device determine whether to further execute the response action. The parameter data is set according to the request data.

Abstract: Disclosed is an electronic device capable of near field communication (NFC) and of achieving high integration, size reduction, and good sensitivity. The electronic device includes an antenna chip provided inside a battery protection circuit package of a battery pack and having embedded an NFC antenna therein, and an extended antenna loop electrically connected to the antenna chip and provided outside the battery protection circuit package.

Abstract: A data transmitting/receiving method capable of effectively suppressing power consumption includes: establishing synchronization between a master device and a slave device based on predetermined synchronization information that is transmitted from the master device or the slave device; setting a contention access period (CAP) between the master device and the slave device at predetermined timing based on the established synchronization; starting data transmission/reception between the master device and the slave device within the CAP; and extending the data transmission/reception even after the CAP in a case where the data transmission/reception does not end within the CAP.

Abstract: Responsive to receiving a request for a measurement in a mobile, the mobile determines whether time instances associated with the measurement coincide with time instances of location estimate availability in the mobile. Responsive to determining that location estimates are not available for a substantial fraction of the time instances when the measurement is requested, the mobile changes the time instances for the measurement and/or the time instances of location estimate availability to increase the availability of location estimates for the measurements.

Abstract: Techniques for connecting using NFC communications are provided. Specifically, methods are presented, that when taken alone or together, provide a device or group of devices with a secure way of transferring data from a wireless device to a reader. The present disclosure includes a method that provides a wireless device with network connectivity options that enable a more secure means for using NFC communications for completing a secure transaction using a secondary code.

Abstract: A digital amplitude modulation device includes power amplifiers, a compositor, a filter, a measurement unit, a protection unit, and a controller. The power amplifiers are arranged in parallel and amplify an input signal in accordance with ON control and stop output in accordance with OFF control. The filter suppresses an unnecessary component to generate an AM signal. The measurement unit measures a measurement value between the filter and a signal output terminal and output the AM signal generated by the filter. The protection unit includes a calculator and a first processing unit. The calculator is formed from an analog circuit and calculates an evaluation value based on the measurement value. The first processing unit is formed from an analog circuit and generates a first control signal by referring to the evaluation value. Upon receiving the first control signal, the controller OFF-controls the power amplifiers.

Abstract: A system and method for synchronizing the operation of a wireless mobile station (102) and a base station (104) includes receiving a message at the base station (104) indicating a state of operation of the wireless mobile station (102). A determination is made as to whether the base station (104) and the mobile station (102) are in synchronization based upon comparing the state of operation of the mobile station (102) and a state of operation of the base station (104).

Abstract: A method includes generating a first signal based on a difference between a first frequency of a first voltage controlled oscillator (VCO) and a second frequency of a second VCO. The method further includes determining a gain of the first VCO at least partially based on the first signal.