Arris Enterprises LLC

Koninklijke Philips Corporation N.v.

Arris Group, Inc.

Arris Solutions, Inc.

Broadband Royalty Corporation

Foce Technology International Bv

2m Engineering Limited

Arris International IP Ltd

Philips Intellectual Property & Standards Gmbh

Marcel F Schemmann

Venkatesh Gururaj Mutalik

Zoran Maricevic

Zhijian Sun

Dean Painchaud

Carsten Heinks

John Ulm

Shamsuddin H Chasmawala

William P Dawson

Benedict Joseph Jackson

Venk Mutalik

John Chrostowski

Aalbert Stek

Joseph F Chiappetta

Dean Stoneback

Amarildo Vieira

Venkatesh G Mutalik

Derald Cummings

Long Zou

Holger Joachim Moench

Alexander Marc Van Der Lee

Mark Carpaij

Hendrik Tjalling Dijkstra

Atanas Pentchev

Thomas Obrien

David B Bowler

Jun J Wang

Cristian Nicolae Presura

Robert Fraser Cruickshank, Iii

Paraskevas Dunias

Rene Duijve

Bernd Engelbrecht

Steven W Moyer

Daniel J Rice

Ido Leshem

Eric Cormier

Jayesh Bhatt

Peter Wolff

Ventatesh Mutalik

Zoran Marlcevic

Jun Wang

Hendrik Dijkstra

Thomas O'BRIEN

Zoran Marecevic

Methods and apparatuses are provided to modify existing overlay system architectures in a cost effective manner to meet the growing demand for narrowcast services and to position the existing overlay systems for additional future modifications. The implementations of the improved overlay system of this disclosure re-digitize narrowcast analog signals after they have been QAM modulated and upconverted to RF frequencies and replace the analog narrowcast transmitters with digital narrowcast transmitters. In the fiber nodes, the received narrowcast signals are converted back to analog signals and combined with analog broadcast signals for transmission to the service groups.

Digital optical transmitter for digitized narrowcast signals

Systems and methods for optical modulation index calibration in a CATV network.

Systems and methods for optical modulation index calibration in a CATV network

A multimode combiner or coupler (MMC) may combine the inputs into a larger core multimode fiber. The multimode combiner may be combined with a re-transmitting laser for detecting and re-transmitting signals. Thus, the multi-mode combiner may detect and combine input signals, and then retransmit the detected, combined signal. The detection can be implemented with multiple single mode fibers to small single mode detectors or a multi-mode coupler with a larger multi-mode detectors. In embodiments of the MMC, a bi-directional optical splitter/combiner includes a transmitter for re-transmitting an RF signal received at a receiver, a first wave division multiplexer (WDM) combiner combining the output of the first transmitter in an upstream direction to a downstream signal in a downstream direction, and a second WDM combiner combining split downstream signals in the downstream direction with upstream signals received via at least two optical fiber inputs.

N-input receiver: RFoG OBI mitigation with retransmission

Disclosed herein are techniques for bidirectional communication in a network, such as a cable television (CATV) system, for return band with echo cancellation. The techniques result in a minimum loss of available return bandwidth to facilitate forward out of band (OOB) communication to a client device, e.g., set top box (STB), within the extended return band, such as a return band extended beyond a frequency previously used for OOB communications.

Echo cancellation in a bidirectional communication system for out of band signaling to a user device

Systems and methods for achieving full duplex bidirectional transmission across coaxial cable in a hybrid fiber-coaxial cable TV network. Some preferred systems and method will attenuate reflections propagated within the coaxial cable. Other preferred systems may echo-cancel reflections propagated within the coaxial cable.

Multiple upstream split support in a fiber-deep HFC network

Full duplex bidirectional transmission on coaxial cable in CATV network

Methods and systems for modulating an amplifier power supply to efficiently attain amplified RF output power with much lower power dissipation than existing amplifiers. In a cable television (CATV) network, a processor receives a signal to be amplified by an amplifier at a location remote from the processor. A bias point of the amplifier may be variably modulated based on peaks of an input signal to reduce amplifier dissipation.

Fiber-optic node with forward data content driven power consumption

In an optical system having multiple cascaded splitter/combiners, a trunk port and/or a drop port is configured for at least one of the splitter/combiner units. Drop ports may be configured with an average gain control, and the trunk ports may be configured to have individual gain control to provide a more precise overall gain and to maintain adequate signal levels. Embodiments apply to evolving RFoG architectures designed to serve a large number of subscribers without suffering from OBI (Optical Beat Interference) by retransmitting an optical signal through cascading splitters/combiners.

Trunk and drop RFOG architecture

Systems and methods for relaying upstream signals received from a plurality of subscribers to a remote head end. Preferably, the systems and methods use a switch that selectively opens when upstream RF signals are not present and closes when upstream RF signals are present, in a manner that reduces noise.

RFoG ONU upstream signal optimization

An active receiver structure that combines a large number of detectors without bandwidth penalty may provide a better signal-to-noise ratio (SNR) than conventional Radio Frequency over Glass (RFoG) networks. A transmission line receiver is used to combine a large number of optical detectors into a single radio frequency (RF) signal without a bandwidth penalty and a modest penalty in noise performance that results in an SNR that is much better than traditional optical combining techniques that are followed by a single detector. An optical multiplexer structure may be designed around the active splitter such that passive optical network (PON) operation is not impeded.

Optical and RF techniques for aggregation of photo diode arrays

Growing community of inventors

Maria Hoop, Netherlands

Marcel F Schemmann