A semiconductor chip includes a first wireless communication circuit, a local oscillator (LO) buffer, and an auxiliary path. The first wireless communication circuit has a signal path, wherein the signal path has a mixer input port and a signal node distinct from the mixer input port. The auxiliary path is used to electrically connect the LO buffer to the signal node of the signal path. The LO buffer is reused for a transmit (TX) function through the auxiliary path.

A system for communicating pitch selections wirelessly from a wireless transmitter has a coded signal generator that generates coded signals in accordance with selected pitch types. A receiver decodes the received coded signals, selects an audio file based on the received coded signal and generates an audio signal announcing the selected pitch type based on the transmitted selected pitch type in accordance with the received coded signal. The audio signal is transduced by a bone conductor transducer so that the player can hear the announced selected pitch type through bone conduction.

There is provided a communication device comprising: a wireless communication circuit configured to control wireless communication with a portable device in conformity with a specific communication standard; a capacitive sensor circuit configured to detect proximity of an object on a basis of a change in capacitance; an antenna configured to be used for both transmitting/receiving a wireless signal conforming to the specific communication and detecting the capacitance; a high-pass filter disposed between the wireless communication circuit and the antenna; and a low-pass filter disposed between the capacitive sensor circuit and the antenna, wherein the communication device is configured to be disposed in a gripping portion to be gripped by a user carrying the portable device.

An active noise control system selects one reference sensor providing a reference signal with the largest coherence to a noise signal, among a plurality of available reference sensors, as a first entry of a reference sensor set. After selecting the first entry, the active noise control system repeats a process in which a sensor capable of providing the largest information quantity to a current reference sensor set among remaining sensors is selected as a new entry of a reference sensor set, until a desired number of sensors is reached or a desired control level is reached. When the reference sensor set is determined, the active noise control system utilizes the entries of the reference sensor set to generates a noise control signal suitable for canceling the noise signal.

Systems, devices and methods related to diversity receivers. In some embodiments, a receiving system can include a controller configured to selectively activate one or more of a plurality of paths between an input and an output, and a plurality of amplifiers, with each one of the plurality of amplifiers disposed along a corresponding one of the plurality of paths and configured to amplify a signal received at the amplifier. The receiving system can further include two or more of features including (a) variable-gain amplifiers, (b) phase-shifting components, (c) impedance matching components, (d) post-amplifier filters, (e) a switching network, and (f) flexible band routing. In some embodiments, such a receiving system can be implemented as a diversity receive (DRx) module.

A receiver module and a terminal device are provided. The receiver module includes a housing, a receiver, a drive assembly and a soundproofing assembly, where the housing is internally provided with an accommodating space, the receiver is arranged in the accommodating space, and the housing and the receiver fit together to form a sound cavity, a sound-emitting side of the receiver facing towards the sound cavity; the housing is provided with a first sound-emitting hole and a second sound-emitting hole; the drive assembly and the soundproofing assembly are connected, and the drive assembly is configured to drive the soundproofing assembly to be in a first state or a second state.

Some implementations of this disclosure provide an electronically customizable article comprising a fashion article selected from the group consisting of a handbag, a shoe, glasses, a tie, and a bowtie wherein the fashion article comprises an electronic visual display, a processor, a communication interface for communication between the fashion article and a network, and a non-transitory computer readable medium containing instructions that, when executed by the processor, causes the fashion article to connect to a server over the network, receive data from the server, and display one or more images associated with the data on the electronic visual display.

Disclosed herein is a portable communications system comprising an enclosure configured to house a plurality of components, a plurality of component holders attached to the enclosure, at least one wiring arrangement electrically coupled to the plurality of component holders, an internal power source configured to provide electrical energy to at least one component of the plurality of components, at least one input power connector configured to connect with a plurality of external power sources, a plurality of output power connectors configured to connect with a plurality of external electrical loads, a power selector switch, at least one power converter configured to convert electrical power from a first voltage level to a second voltage level, at least one transceiver comprising a plurality of antenna, at least one input device configured to receive input from a user, and at least one output device configured to present output to the user.

A semiconductor chip includes a first wireless communication circuit, a local oscillator (LO) buffer, and an auxiliary path. The first wireless communication circuit has a signal path, wherein the signal path has a mixer input port and a signal node distinct from the mixer input port. The auxiliary path is used to electrically connect the LO buffer to the signal node of the signal path. The LO buffer is reused for a transmit (TX) function through the auxiliary path.

A tactical communications apparatus is used to establish secure, reliable communications between a forward-deployed communications station and any designated second communicator during a building siege or hostage situation. At least one communications device, at least one processing unit, a transceiver array, and a power supply are mounted to a casing. The casing allows the tactical communication apparatus to be tossed into an area. The transceiver array wirelessly connects to at least one remote terminal, enabling communication via the at least one communication device. The casing also contains a plurality of discrete surveillance devices mounted into the casing to enable an operator to remotely surveil the area around the casing. Further, the tactical communication apparatus also supports at least one offensive device operated via the at least one remote terminal. The at least one offensive device may be activated as cover for responders if communications fail to resolve a situation.