Thomson Licensing S.a.

Thomson Licensing

Thomson Consumer Electronics Inc.

Interdigital Ce Patent Holdings

Thomas Licensing

Ramaswamy, Kumar

Shiue, Dong-Chang

Paul Gothard Knutson

Kumar Ramaswamy

Dong-Chang Shiue

Wen Gao

Benyuan Zhang

David Lowell McNeely

Max Ward Muterspaugh

Joshua Lawrence Koslov

Yik Chung Wu

Manoj Viswambharan

Dirk Schmitt

John Sidney Stewart

Louis Robert Litwin

Snigdha Verma

Maneck Behram Kapadia

Andreas Matthias Aust

Jun Li

Saurabh Mathur

Jeffrey Allen Cooper

Billy Wesley Beyers

Thomas Anthony Stahl

Charles Chuanming Wang

Philippe Gilberton

Maxim Borisovich Belotserkovsky

Hou-Shin Chen

Henri Girard

Adam Robert Margetts

An input N-plexer filter stage is susceptible to receive surge energy via an input conductor, when the surge energy occurs. A high-pass filter included in a diplexer filter stage applies a radio frequency (RF) signal in a signal path between the input N-plexer filter stage and an output of a Data Over Cable Service Interface Specification (DOCSIS) transmitter stage. A low-pass filter included in the diplexer filter stage couples a surge suppressing threshold device to the signal path to dissipate the surge energy in the surge suppressing threshold device, when the surge energy occurs. The low-pass filter has a cut-off frequency that is lower than a normal operation frequency range of the RF signal. The low-pass filter isolates the surge suppressing threshold device from the signal path in normal operation frequency range of the RF signal, when no surge energy is applied.

Surge protector for a transceiver

A communication device comprises a processor; and a diplexer comprising a low pass filter passing signals with frequency below a first frequency threshold, the low pass filter having a first input and a first output, and a second filter being one of a high pass filter and a band pass filter passing signals with frequency above a second frequency threshold, the second filter having a second input and a second output; and a switch controllable by the processor for connecting the second input to a termination in a first state and connecting the second input to the first input in a second state responsive to a control signal from the processor, wherein the first output is coupled to the second output and the first input is configured to receive an input signal having a frequency range covering at least the first frequency threshold.

Apparatus and method for controlling a filter in a signal communication device

The invention relates to a wireless home gateway apparatus and methods of wirelessly delivering audio and/or video programs between a home gateway and a client and mitigating interference thereon. Specifically, the present invention relates to transmitting an audio/video program on two white space channels and alternately stopping transmission on one of said channels to search for external transmissions on the white space channel. The present invention permits the wireless home gateway to continuously transmit an audio/video program to a client while periodically searching for transmitters on each of the white space channels.

Method and apparatus for detecting transmitters for a white space device

An implementation exits a power saving mode for fixed and periodic active periods of time to receive a separate burst transmission from a first stream during each of the corresponding active periods of time. The first stream is received at a first-stream burst data rate. The first stream includes data configured to be displayed at a first playback rate that is substantially less than the first-stream burst data rate. During the active periods of time, data is received from a second stream at a second-stream rate. The second stream includes data configured to be displayed at a second playback rate that is substantially the same as the second-stream rate. After receiving each of the burst transmissions from the first stream during the active periods of time, the power saving mode is entered for corresponding fixed and periodic power-saving periods of time while waiting for another burst from the first stream.

Method and apparatus for transmitting data

A method and apparatus for reducing core network traffic caused by migrant users of a public wireless network are described including receiving a DHCP discover request from a wireless client device, determining if there are enough IP addresses available to assign one of the plurality of IP addresses to the wireless client device, transmitting a DHCP acknowledgement including the assigned IP address and a lease duration to the wireless client device, determining if a lease timeout has occurred, releasing the assigned IP address if the lease timeout has occurred, receiving a first hypertext transfer protocol (HTTP) request or first hypertext transfer protocol secure (HTTPS) request from the wireless client device, transmitting a media access control (MAC) pre-authentication request from the wireless client to an authentication, authorization and accounting (AAA) server, receiving a MAC pre-authentication response from the AAA server and providing access to the Internet via the wireless client device.

Reducing core network traffic caused by migrant users

A remote control unit generates a first beam which a user points at one of a plurality of information appliances to select that appliance. After selecting the desired appliance, the user then actuates a button on a control keypad on the remote control unit to cause the unit to generate a second, modulated beam. The remote control unit modulates the second beam in accordance with a desired functionality of the information appliance to control the appliance accordingly.

Directional remote control

A method of feedforward phase recovery on a data stream is described. Phase estimation base points are calculated, at a phase detector, for each block of the received data stream. A current phase, at a phase interpolator, between two phase estimation base points. Data stream delays within the phase detector are matched with delays within the phase interpolator.

Feed-forward carrier recovery system and method

A method of frame sync detection is described. A first and second differential correlation of a data stream is calculated, at a plurality of delay and conjugate multipliers. The first and second differential correlations are convolved with a previous set of differential correlations. A correlation peak is calculated, at a sync detector, using the convolved differential correlations, to detect a frame sync.

Sync detection and frequency recovery for satellite systems

Methods and apparatus for symbol timing recovery are provided. Both a coarse symbol timing recovery method and apparatus, and a fine symbol timing recovery method and apparatus are described which can be used jointly for symbol recovery, for example in phase shift keying receivers. The coarse method involves the use of differential correlations and finding the time difference in peak values of the correlation results. The fine method involves interpolation of a received digital signal, followed by filtering and timing error detection. The error detection signal is further filtered and used to control the interpolator. The methods provide for robust symbol timing synchronization.

Method and apparatus for symbol timing recovery

An electronic apparatus such as an audio apparatus, television signal receiver, or other apparatus provides an equalizer interface that enables equalizer settings to be adjusted via acoustic user feedback. According to an exemplary embodiment, the electronic apparatus includes a sound generator for generating a first tone for a first frequency band. A processor enables a user to adjust a first volume level of the first tone. A memory stores the first volume level for the first frequency band. A volume controller applies the first volume level to output signals in the first frequency band.

Equalizer interface for electronic apparatus

A satellite television ground system, particularly for a make or break satellite television signal system, includes an outdoor unit and an indoor unit that are in communication with each other via a single coaxial cable and an optional separate single conductor for power. The satellite television ground system is operative to measure and reverse frequency conversion errors utilizing DSP techniques, allowing for more precise generation and transmission of uplink signals from the satellite television ground system. Control data for the system is sent via a low data rate connection on a power cable thereof, or by a narrowband signaling channel via a coax cable. The system also utilizes a single reference oscillator to drive the various frequency synthesizers and the like. The satellite television ground system utilizes related oscillators for the uplink and downlink sections. Carrier frequency offset in the downlink is measured in a carrier tracking loop part of a television signal demodulator. The carrier frequency offset of the downlink is utilized to synthesize various frequency signals for the uplink and downlink sections to correct frequency errors. For the uplink section, the carrier frequency offset of the downlink is reversed in the uplink. If the uplink is on a different frequency, the measured offset of the system master oscillator can be scaled by different synthesizer ratios.

Satellite television system ground station having wideband multi-channel LNB converter/transmitter architecture with controlled uplink transmission

In an electronic device having an acoustic echo canceller and being capable of implementing audio applications and at least one of a conferencing application and a telephony application, there is provided a background training method for the acoustic echo canceller. The method includes the step of utilizing () sound that corresponds to a non-training audio application to train the acoustic echo canceller.

Acoustic echo canceller with multimedia training signal

A multipath searcher and method includes a programmable decimation filter configured to adjust a sample rate of a received pilot signal. A plurality of correlators is configured to compare the received pilot signal to a reference code in a first mode and in a second mode. The first mode includes a low resolution search of a search window performed such that the plurality of correlators encompass an entire search window concurrently and the plurality of correlators receives a delayed reference code delayed to correspond with a portion of the search window in which a corresponding correlator performs correlation to identify peaks in the received pilot signal. The second mode includes a high resolution search of a refined search window only at or near identified peaks discovered in the first mode. The high resolution search is focused at the peak location by adjusting delays in the plurality of correlators.

Method and apparatus for multiresolution / multipath searcher

An implementation provides a transmitter that separates sequential portions of data in a first set of data by time intervals allowing a power saving mode (). The transmitter transmits the sequential portions of data separated by respective time intervals having lengths configured to allow a receiver to enter and exit a power saving mode between receiving sequentially transmitted portions of data from the first set of data (). The transmitter separates sequential portions of data in a second set by time intervals that are not of sufficient length to allow a receiver to enter and exit a power saving mode during the time intervals (). The second set of data is then transmitted ().

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Indianapolis, IN, United States of America

Paul Gothard Knutson