CPC Class H04W

The present disclosure relates to a method and system for receiving a broadcast signal. The system includes a broadcast receiver device having two receiving units, two decoding units, a combining unit and a further processing unit. A broadcast signal is received by both receiving units, so that two reception signals are provided. From each reception signal, a raw data stream is extracted and decoded by the decoding units. It is checked if the data stream provided by each decoding unit is complete. If a first data stream is complete, it is processed by the further processing unit. If the first data stream is incomplete and the second data stream is complete, the second data stream is further processed. If both data streams are incomplete, they will be combined to a combined data stream by the combining unit, the combined data stream being further processed, if it is complete.

A high-frequency front end circuit includes a frequency fixed filter and frequency variable LC filters, and these are connected in series in a signal transmission path. The frequency fixed filter transmits high-frequency signals in a frequency band of a communication band and attenuates high-frequency signals outside the frequency band of the communication band. One of the frequency variable LC filters is an LC filter and attenuates unnecessary wave frequencies in the frequency band of the communication band. Another one of the frequency variable filters is a resonator filter that passes high-frequency signals in a frequency band of a selected channel and attenuates high-frequency signals in frequency bands of adjacent communication channels of the selected channel.

Adjusting automatic gain control of a receiver, in a short-range wireless system having a plurality of channels and a plurality of receiving antennas, includes setting initial gain to be set by receiver AGC based on signals received at a receiver reference antenna, receiving, at each of the receiving antennas, a signal on a current channel, and adjusting gain to be set by AGC for the signal to prevent saturation. Angle-of-arrival estimation may be performed following adjusting of the AGC. Adjusting AGC may include backing off the AGC, changing the reference antenna prior to deriving gain to be set by AGC, or determining gain to be set by AGC at additional receiving antennas, and for each antenna that is not the reference antenna and is not one of the additional antennas, selecting gain to be set by AGC from a closest one of the reference antenna and the additional antennas.

Circuitry and methods are described for digital signal demodulation. In a configurable receiver, a method includes receiving a radio frequency signal at the configurable receiver, operating the configurable receiver in a first mode, the first mode including providing the radio frequency signal to an amplitude detection circuit to determine an amplitude, providing the radio frequency signal to a phase detection circuit to determine a phase, and providing the amplitude and phase to a coordinate rotation digital computer (CORDIC) logic circuit, and operating the configurable receiver in a low power mode upon receiving an indication to selectively disable the amplitude detection circuit, the low power mode including providing the radio frequency signal to the phase detection circuit to determine the phase, and providing the phase and a predetermined constant value in lieu of the amplitude to the CORDIC logic circuit.

Communications systems containing an electrically-isolated Push-To-Talk (EI-PTT) device are described in this application. The communication systems contain multiple radios, a microphone/headset, and a centralized power supply. The systems also contain an EI-PTT device which reduces or eliminates noise that can disrupt the audio transmission. The EI-PTT device allows an operator or user of the communication system to actuate a button which remotely switches the radio from receive mode to transmit mode. This allows multiple users to listen (receive) to communication traffic on the same frequency at all times, but only speak (transmit) on the frequency while activating the EI-PTT device. Unlike other PTT devices which electrically tie the ground signals inside the device, the EI-PTT devices electrically isolate the ground signals to reduce the problem of noise coupling. Other embodiments are described.

Aspects of the subject disclosure may include, for example, a coupling device including a receiving portion that receives a radio frequency signal conveying data from a transmitting device. A magnetic coupler magnetically couples the radio frequency signal to a transmission medium as a guided electromagnetic wave that is bound by an outer surface of the transmission medium. A cap includes a dielectric portion that secures the transmission medium adjacent to the magnetic coupler and a reflective plate that reduces electromagnetic emissions from the magnetic coupler. Other embodiments are disclosed.

The present invention relates to a wireless communication system with an energy transmission function. An output terminal of a control module is connected with an input terminal of an LVDS conversion module and an input terminal of a MOS driving module, respectively. An output terminal of the MOS driving module is connected with an input terminal of a MOS power amplifier module. The MOS power amplifier module is electrically connected with a power supply. An output terminal of the MOS power amplifier module is connected with an input terminal of an electric-to-magnetic conversion module. The input terminal of the electric-to-magnetic conversion module is also connected with an output terminal of the LVDS conversion module. An output terminal of an electric-to-magnetic conversion module is connected with an input terminal of a magnetic-ring coupling module. An output terminal of the magnetic-ring coupling module is connected with an input terminal of a magnetic-to-electric conversion module. An output terminal of the magnetic-to-electric conversion module is connected with an input terminal of a rectifier and voltage regulator module and an input terminal of a TTL signal conversion module, respectively; an output terminal of the TTL signal conversion module is connected with an input terminal of a receiving module, and an output terminal of the rectifier and voltage regulator module is connected with the an input terminal of the voltage output module. The embodiment is simple in structure and high in efficiency.

A system includes a combined NFC and Bluetooth interface that can interact with one or more other devices that also include the combined NFC and Bluetooth interface. A processor in the device executes an application that includes a thin client and a security wrapper. The thin client can package content in a packet with security settings and send the packet to the other device. Further, the thin client can accept packets from other devices. Based on one or more user settings and/or a level of trust between the devices, the thin client can determine if the packet should be accepted or rejected. If accepted, the thin client can store the content, located within the packet, for the user.