Rca Inc.

Thomson Licensing

Thomson Licensing S.a.

Rca Licensing Corporation

Thomson Consumer Electronics Inc.

Interdigital Ce Patent Holdings

Thomson Licensing Dtv

Thomas Licensing

Interdigital Madison Patent Holdings, Sas

Interdigital Madison Patent Holdings

Max Ward Muterspaugh

Kumar Ramaswamy

Paul Gothard Knutson

Alexander Wayne Hietala

Michael Anthony Pugel

Lincheng Xiu

Rejimon Gnanammal Varghese

John Sidney Stewart

William A Lagoni

William John Testin

Mickey J Hunt

David Lawrence Albean

Darin Bradley Ritter

Ivonete Markman

Matthew Thomas Mayer

Gabriel Alfred Edde

Daniel Mark Hutchinson

Gregory George Tamer

Walter G Gibson

Gerald E Theriault

Henri Girard

Frank C Liu

Abraham E Rindal

William D Anderson

Gary A Whitledge

Mickey Jay Hunt

Dan Hutchinson

Gilbert C Hermeling, Jr

Mark R Anderson

Rejimon Varghese

Daniel Hutchinson

Methods and apparatuses are provided with a solution to adjacent channel interference when a multi-carrier modulation system (e.g., OFDM) replaces a legacy modulation system and co-exists with it for a period of time. The adjacent channel interference can be reduced by blocking (setting to 0) and not using some of the carriers at the edge of the spectrum during the transition period. This effectively reduces the bandwidth of the channel and consequently, the adjacent channel interference caused by the multi-carrier signal. However, at some point in time, the legacy system will be turned off and the adjacent channel interference into the original channels will no longer be important. The present principles propose a mechanism to allow for the unblocking of the removed carriers once the interference problem becomes less strict.

Low adjacent channel interference mode for a digital television system

A termination/attenuation network applies to an input of a set-top box a MOCA channel signal having a narrow band of frequencies and included in RF signals having a wide band of frequencies received via a cable from a satellite antenna. The network includes a pair of series resistors and a parallel resistor coupled to a junction terminal between the pair of series resistors in a T-shaped configuration. A series-pass band-pass filter (L, C) bypasses the pair of series resistors and a parallel band stop filter (L, C) decouples the parallel resistor at the frequency band of the MOCA channel signal for selectively reducing attenuation at the frequency band of the MOCA channel signal.

Filter-termination combination for multi-band receiver

An RF interference suppressor for satellite receivers and more specifically those that employ the MOCA standard is provided. The RF interference suppressor shields the connection point of the center conductor of the F-connector to the PC board from spurious signals emanating from the high speed digital portions of the receiver. In addition, the RF interference suppressor shield includes a tab portion that encompasses the threaded portion of the F-connector and operates to shield the path for RF interference resulting from the gap between the F-connector body and the inner shield wall of the receiver.

RF interference suppressor

An apparatus and method for applying signals into a filter circuit is disclosed. The apparatus includes a filter circuit that filters an input signal and outputs a signal in a first frequency range, and a filter circuit that filters the input signal and outputs a signal in a second frequency range that is different from the first frequency range, wherein the second filter circuit includes an interface circuit for inserting a signal used to receive the first frequency range signal. The method includes receiving a signal containing content from a first source in a first frequency range and content from a second source in a second frequency range, providing filtering to produce a signal containing the first content, providing filtering to produce a signal containing the second content, and applying a signal to second content signal processing circuitry, the signal provided used for receiving the content from the first source.

Apparatus and method for inserting electrical power or control signals into a diplexer circuit

A simplified filter structure, and method thereof, for filtering signals received on a network are provided. The present disclosure is directed to a simplified filter structure, arranged as a dual unbalanced cascade diplexer for a plurality of received signals, including satellite, terrestrial, and home networking signals, e.g., Multimedia Over Cable Alliance (MoCA) signals. The simplified filter structure is designed such that signals within a certain predetermined frequency range are passed, while the impedance is matched in the stopband frequency range both above and below the frequency range of the passed signals.

Apparatus and method for filtering a signal

An apparatus and method for filtering a signal is described. The apparatus includes a first singly terminated filter that filters a signal in a first frequency range, and a second singly terminated filter that filters the signal in a second frequency range, the inputs of the filters being connected together, wherein an element of the first filter is coupled to an additional element to form a frequency response transmission zero in a stopband frequency range of the first filter. The method includes receiving a signal, the signal containing content from a first source in a first frequency range and content from a second source in a second frequency range different than the first range, applying filtering, and applying filtering to generate a second output signal, using filters that include a singly terminated filter section with additional circuit elements to form a transmission frequency zero in the stopband frequency range.

Apparatus and method for filtering singals in a receiver

An F connector coupled to a transmission line applies a radio frequency (RF) signal to an RF input of a filter of a set-top box via an impedance matching network that includes a first inductor and a second inductor that are coupled in series. A capacitor and a third inductor are coupled in parallel between a discharge tube and a junction terminal that is interposed between the series coupled inductors for protecting electronic components such as the filter from a voltage surge developed in the transmission line.

Surge protector for a transmission line connector

The disclosed embodiments relate to an apparatus and method for controlling transmission of a transmitted signal in a communications device. The apparatus includes a first antenna for receiving a first signal using a first polarization, a second antenna for receiving the first signal and a second signal and transmitting the second signal in a second polarization, and a controller coupled to the first antenna and the second antenna for adjusting the transmitting by the second antenna in response to the first signal received by the first antenna and the second antenna. The method includes the steps of receiving a first signal using a first polarization, receiving the first signal using a second polarization, transmitting a second signal using the second polarization, and controlling the transmitting step in response to the step of receiving using the first polarization and the step of receiving using the second polarization.

Apparatus and method for controlling a signal

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

The disclosed embodiments relate to an apparatus and method for controlling transmission of a signal in a communications device in order to prevent interference. An apparatus is described that includes a transmitter for transmitting a signal, an antenna coupled to the transmitter for radiating the signal in a radiated polarization pattern, and a controller for adjusting the transmitter when the radiated signal exhibits an undesired polarization pattern. A method is also described that includes the steps of producing a signal for transmission, radiating the signal in a polarization pattern, and adjusting the production of the signal for transmission when the radiated signal exhibits an undesired polarization.

A Wireless Regional Area Network (WRAN) receiver comprises a transceiver for communicating with a wireless network over one of a number of channels, and an Advanced Television Systems Committee (ATSC) signal detector for use in forming a supported channel list comprising those ones of the number of channels upon which an ATSC signal was not detected, wherein the ATSC signal detector is a threshold-based detector and detects an ATSC signal as a function of at least one threshold, and wherein the ATSC signal detector is responsive to at least one of a carrier tracking loop lock signal, a symbol timing recovery lock signal and a synchronization (sync) lock signal.

Digital detector for ATSC digital television signals

A signal processing arrangement has a signal source for providing a radio frequency (RF) signal, a signal output point, and first control means coupled between the signal source and the signal output point for controlling the selection of a low noise figure amplifier in response to the magnitude of an RF signal on a tuned channel frequency and the magnitude of an RF signal in the vicinity of said tuned channel frequency.

Apparatus and method for optimizing the level of RF signals based upon the information stored on a memory

A technique for performing channel detection in a device such as a television signal receiver is capable of quickly determining the analog and/or digital broadcast channels available in a given area. According to an exemplary embodiment, a method for performing channel detection includes tuning a first frequency channel, determining whether a signal parameter associated with the first frequency channel exceeds a predetermined threshold, and enabling a first channel acquisition operation responsive to determining that the signal parameter exceeds the predetermined threshold.

Method and apparatus for performing channel detection

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.

Satellite television system ground station having wideband multi-channel LNB converter/transmitter architecture utilizing a frequency stabilized common oscillator

Growing community of inventors

Indianapolis, IN, United States of America

Max Ward Muterspaugh