ES2142026T3 - Sistema de cancelacion de interferencias para las transmisiones de retorno de television por cable. - Google Patents

Sistema de cancelacion de interferencias para las transmisiones de retorno de television por cable.

Info

Publication number
ES2142026T3
ES2142026T3 ES96303690T ES96303690T ES2142026T3 ES 2142026 T3 ES2142026 T3 ES 2142026T3 ES 96303690 T ES96303690 T ES 96303690T ES 96303690 T ES96303690 T ES 96303690T ES 2142026 T3 ES2142026 T3 ES 2142026T3
Authority
ES
Spain
Prior art keywords
signal
interference
return
cancellation system
reference signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
ES96303690T
Other languages
English (en)
Inventor
Nageen Himayat
Charles A Eldering
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arris Technology Inc
Original Assignee
Arris Technology Inc
General Instrument Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arris Technology Inc, General Instrument Corp filed Critical Arris Technology Inc
Application granted granted Critical
Publication of ES2142026T3 publication Critical patent/ES2142026T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable
    • H04N7/102—Circuits therefor, e.g. noise reducers, equalisers, amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

UN SISTEMA DE CANCELACION DE INTERFERENCIA PARA CATV REDUCE LA PRESENCIA DE INTERFERENCIAS DE ANCHO DE BANDA ESTRECHO NO DESEADAS, QUE CORROMPEN LAS TRANSMISIONES DE LA SEÑAL DE RETORNO. EL SISTEMA DE CANCELACION ADQUIERE UNA SEÑAL DE REFERENCIA QUE CONTIENE COMPONENTES RELACIONADAS CON LA INTERFERENCIA PRESENTE EN LA SEÑAL DE RETORNO. LA SEÑAL DE REFERENCIA SE PROCESA PARA DERIVAR ESTIMACIONES DE LAS COMPONENTES DE LA INTERFERENCIAS QUE APARECEN EN LA SEÑAL DE RETORNO Y SE GENERA UNA SEÑAL DE CANCELACION. LA SEÑAL DE CANCELACION DE INTERFERENCIA SE COMBINA ENTONCES CON LA SEÑAL DE RETORNO, POR ELLO REDUCE LAS COMPONENTES DE INTERFERENCIA PRESENTES EN ELLA. EL SISTEMA DE CANCELACION DE INTERFERENCIA ESTA DESPLEGADO A UNA CABECERA TERMINAL DE CATV Y SE USAN TECNICAS DE ACCESO MULTIPLE DE DIVISION EN EL TIEMPO (TDMA) PARA LA TRANSMISION DE RETORNO. LA SEÑAL DE REFERENCIA SE DERIVA DE MONITORIZAR INTERVALOS DE TIEMPOS DENTRO DE UNA TRAMA TDMA QUE CONTIENE DATOS DE TRANSMISION PREDETERMINADOS.PREFERIBLEMENTE LOS DATOS PREDETERMINADOS SON LA AUSENCIA DE LOS DATOS QUE RESULTAN EN UN INTERVALO DE TIEMPO LIBRE. ESTOS INTERVALOS DE TIEMPO PUEDEN ESTAR TEMPORALMENTE LIBRES, O PUEDEN DELIBERADAMENTE SER DEJADOS SIN USO PARA PROPORCIONAR UNA VENTANA PARA UNA COMPONENTE DE SOLO RUIDO DE LA SEÑAL DE RETORNO. LA SEÑAL OBTENIDA DE ESA MANERA SE PASA A TRAVES DE LA MISMA ETAPA DE PROCESAMIENTO DE RF COMO LA SEÑAL DE RETORNO COMPUESTA Y SUBSTANCIALMENTE MUESTREADA Y DIGITALIZADA. DESPUES, SE APLICAN TECNICAS DE ESTIMACION DE ESPECTROS A LAS MUESTRAS DE LA SEÑAL, PARA DETERMINAR LAS FRECUENCIAS DE LAS SEÑALES QUE INTERFIEREN. UNA VEZ QUE SE OBTIENE UNA ESTIMACION DE LAS FRECUENCIAS DE INTERFERENCIA DEL ESPECTRO, LA SEÑAL DE REFERENCIA QUE COMPRENDE LAS MISMAS FRECUENCIAS PUEDEN SER SINTETIZADAS.
ES96303690T 1995-06-07 1996-05-23 Sistema de cancelacion de interferencias para las transmisiones de retorno de television por cable. Expired - Lifetime ES2142026T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/473,755 US5742591A (en) 1995-06-07 1995-06-07 Interference cancellation system for CATV return transmissions

Publications (1)

Publication Number Publication Date
ES2142026T3 true ES2142026T3 (es) 2000-04-01

Family

ID=23880839

Family Applications (1)

Application Number Title Priority Date Filing Date
ES96303690T Expired - Lifetime ES2142026T3 (es) 1995-06-07 1996-05-23 Sistema de cancelacion de interferencias para las transmisiones de retorno de television por cable.

Country Status (6)

Country Link
US (1) US5742591A (es)
EP (1) EP0748120B1 (es)
AT (1) ATE188828T1 (es)
CA (1) CA2176409C (es)
DE (1) DE69606095T2 (es)
ES (1) ES2142026T3 (es)

Families Citing this family (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5915205A (en) * 1996-01-19 1999-06-22 Texas Instruments Incorporated Ingress noise cancellation for upstream signals on a cable television system using an antenna to determine local noise
US5881363A (en) * 1996-04-29 1999-03-09 Philips Electronics North America Method and apparatus for combatting ingress and multipath in a CATV return channel
US6278744B1 (en) 1996-11-15 2001-08-21 Conexant Systems, Inc. System for controlling and shaping the spectrum and redundancy of signal-point limited transmission
US6192087B1 (en) 1996-11-15 2001-02-20 Conexant Systems, Inc. Method and apparatus for spectral shaping in signal-point limited transmission systems
US6859828B1 (en) * 1997-02-25 2005-02-22 Agilent Technologies, Inc. Bi-directional test system for network analysis
US5870513A (en) * 1997-06-17 1999-02-09 Cable Television Laboratories, Inc. Bidirectional cable network with a mixing tap for suppressing undesirable noise in signals from a remote end of the network
GB9713790D0 (en) * 1997-07-01 1997-09-03 Raychem Sa Nv Noise monitoring unit
US6269093B1 (en) * 1997-12-16 2001-07-31 Nokia Mobile Phones Limited Adaptive removal of disturbance in TDMA acoustic peripheral devices
US6363105B1 (en) * 1998-02-17 2002-03-26 Ericsson Inc. Flexible sliding correlator for direct sequence spread spectrum systems
US5994955A (en) * 1998-06-26 1999-11-30 Maxim Integrated Products, Inc. Driver amplifiers with low noise standby mode characteristics
US6760316B1 (en) 1998-10-30 2004-07-06 Broadcom Corporation Method and apparatus for the synchronization of multiple cable modem termination system devices
EP1125398B1 (en) 1998-10-30 2008-10-22 Broadcom Corporation Cable modem system
US6961314B1 (en) 1998-10-30 2005-11-01 Broadcom Corporation Burst receiver for cable modem system
US7103065B1 (en) * 1998-10-30 2006-09-05 Broadcom Corporation Data packet fragmentation in a cable modem system
US6327709B1 (en) * 1998-12-22 2001-12-04 General Instruments Corporation Method and apparatus for filtering interference and nonlinear distortions
US6570394B1 (en) * 1999-01-22 2003-05-27 Thomas H. Williams Tests for non-linear distortion using digital signal processing
FI106995B (fi) * 1999-02-26 2001-05-15 Nokia Mobile Phones Ltd Menetelmä häiriöiden pienentämiseksi vastaanottimessa
US7620611B1 (en) * 1999-07-20 2009-11-17 Trilithic, Inc. Neural networks for ingress monitoring
US7124221B1 (en) * 1999-10-19 2006-10-17 Rambus Inc. Low latency multi-level communication interface
US6396329B1 (en) * 1999-10-19 2002-05-28 Rambus, Inc Method and apparatus for receiving high speed signals with low latency
US7161513B2 (en) * 1999-10-19 2007-01-09 Rambus Inc. Apparatus and method for improving resolution of a current mode driver
WO2001084181A2 (en) 2000-04-24 2001-11-08 Lockheed Martin Mission Systems Passive coherent location system and method
US6757910B1 (en) * 2000-06-08 2004-06-29 C-Cor.Net Corporation Adaptive filter for reducing ingress noise in CATV return signals
CA2426568C (en) * 2000-10-20 2010-05-11 Lockheed Martin Corporation Civil aviation passive coherent location system and method
US6710743B2 (en) 2001-05-04 2004-03-23 Lockheed Martin Corporation System and method for central association and tracking in passive coherent location applications
AU2002346630A1 (en) 2001-12-05 2003-06-23 Lockheed Martin Corporation System and method for auto calibrated reduced rank adaptive processor
US7971225B2 (en) * 2002-02-08 2011-06-28 Finisar Corporation Bandpass component decimation and transmission of data in cable television digital return path
US8861667B1 (en) 2002-07-12 2014-10-14 Rambus Inc. Clock data recovery circuit with equalizer clock calibration
US7292629B2 (en) * 2002-07-12 2007-11-06 Rambus Inc. Selectable-tap equalizer
US20040106381A1 (en) * 2002-09-06 2004-06-03 Engim Incorporated Transmit signal cancellation in wireless receivers
US7716712B2 (en) 2003-06-18 2010-05-11 General Instrument Corporation Narrowband interference and identification and digital processing for cable television return path performance enhancement
US7254200B2 (en) * 2004-05-13 2007-08-07 Hellosoft, Inc. System and method for frequency burst detection for GSM/GPRS
US7724848B2 (en) * 2005-07-26 2010-05-25 Data Device Corporation Predictive signal cancellation for extracting 1 Mb/s MIL-STD-1553 component from composite high performance 1553 signal
US20070082638A1 (en) * 2005-09-03 2007-04-12 Oleg Panfilov Adaptive Narrowband Interference Canceller for Broadband Systems
US7907690B2 (en) * 2006-10-17 2011-03-15 Edgewater Computer Systems, Inc. Interference cancellation system and method using impulse response
US7822126B2 (en) * 2006-08-10 2010-10-26 Edgewater Computer Systems, Inc. Interference cancellation system and method
US10162782B2 (en) 2006-05-22 2018-12-25 Edgewater Computer Systems, Inc. Data communications system and method of data transmission
US8135058B2 (en) 2008-10-10 2012-03-13 Csr Technology Inc. Adaptive known signal canceller
US9647851B2 (en) 2008-10-13 2017-05-09 Ppc Broadband, Inc. Ingress noise inhibiting network interface device and method for cable television networks
EP2415260A1 (en) 2009-04-01 2012-02-08 David Zilberberg System for reducing noise in a catv home amplifier upstream path and a method thereof
US8588724B2 (en) * 2009-08-20 2013-11-19 Alfred E. Mann Foundation For Scientific Research Optimal narrowband interference removal for signals separated in time
EP2451097A1 (en) * 2010-11-05 2012-05-09 Sony Ericsson Mobile Communications AB A method and device for reducing interference in an audio signal during a call
US9059786B2 (en) * 2011-07-07 2015-06-16 Vecima Networks Inc. Ingress suppression for communication systems
US8942330B2 (en) * 2012-01-18 2015-01-27 Baker Hughes Incorporated Interference reduction method for downhole telemetry systems
BR112015008675A2 (pt) 2012-10-17 2017-07-04 Ppc Broadband Inc dispositivo de interface de rede
US10044490B2 (en) * 2013-11-14 2018-08-07 Parallel Wireless, Inc. Adjacent channel interference cancellation in multi-channel systems
US10623986B2 (en) * 2015-10-22 2020-04-14 Photonic Systems, Inc. RF signal separation and suppression system and method
US10389464B2 (en) * 2016-04-28 2019-08-20 Samsung Electronics Co., Ltd System and method for improved data decoding, tracking, and other receiver functions in the presence of interference
CN110897621B (zh) * 2019-10-21 2022-10-28 思澜科技（成都）有限公司 一种生理信号提取方法及其系统

Family Cites Families (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4689628A (en) * 1974-08-16 1987-08-25 The United States Of America As Represented By The Secretary Of The Navy Adapive sidelobe canceller system
US5049890A (en) * 1974-09-23 1991-09-17 The United States Of America As Represented By The Secretary Of The Navy Sampled data processing
US4439770A (en) * 1976-06-23 1984-03-27 The United States Of America As Represented By The Secretary Of The Navy Cascaded adaptive loops
JPS57125530A (en) * 1981-01-28 1982-08-04 Nippon Gakki Seizo Kk Removing circuit for interference of adjacent station at receiver
US4408615A (en) * 1981-03-02 1983-10-11 Cambridge Instruments, Inc. Interference filter
US4412341A (en) * 1981-11-18 1983-10-25 Bell Telephone Laboratories, Incorporated Interference cancellation method and apparatus
US4435841A (en) * 1982-03-01 1984-03-06 Zenith Radio Corporation Communications receiver having a switchable filter input stage
US4549183A (en) * 1982-08-02 1985-10-22 Selenia Spa Interference suppressor for an electronically or mechanically scanning monopulse radar generating sum and difference signals from received microwave energy
US4472814A (en) * 1982-09-01 1984-09-18 The United States Of America As Represented By The Secretary Of The Army CW Interference cancelling system for spread spectrum signals
US4472815A (en) * 1982-09-27 1984-09-18 The United States Of America As Represented By The Secretary Of The Army Pulse interference cancelling system for spread spectrum signals
US4475214A (en) * 1982-10-12 1984-10-02 The United States Of America As Represented By The Secretary Of The Army CW Interference cancelling sytem for spread spectrum signals utilizing active coherent detection
NL8301179A (nl) * 1983-04-01 1984-11-01 Philips Nv Ontvanger voor hf-signalen voorzien van een paar parallelle signaalwegen.
US4608569A (en) * 1983-09-09 1986-08-26 General Electric Company Adaptive signal processor for interference cancellation
US4612549A (en) * 1983-12-23 1986-09-16 General Electric Company Interference canceller loop having automatic nulling of the loop phase shift for use in a reception system
US4660042A (en) * 1984-02-24 1987-04-21 Litton Systems, Inc. Cancellation system for transmitter interference with nearby receiver
CA1235751A (en) * 1985-01-09 1988-04-26 Junji Namiki One frequency repeater for a digital microwave radio system with cancellation of transmitter-to-receiver interference
US4812851A (en) * 1985-10-31 1989-03-14 Digital Marine Electronics Corporation Radio receiver with automatic interference cancellation
US4736455A (en) * 1985-12-23 1988-04-05 Nippon Telegraph And Telephone Corporation Interference cancellation system
DE3788797T2 (de) * 1986-10-22 1994-04-28 Kokusai Denshin Denwa Co Ltd System zur Auslöschung von Interferenzen.
US4748667A (en) * 1986-11-04 1988-05-31 Scientific Atlanta Jamming signal scrambling and descrambling systems for CATV
US5115454A (en) * 1987-05-12 1992-05-19 Kucar Andy D Method and apparatus for carrier synchronization and data detection
US4996488A (en) * 1987-10-01 1991-02-26 Nave Mark J Measuring and limiting EMI with a selectable mode reflection network
CA1320535C (en) * 1988-02-29 1993-07-20 Kazuzi Watanabe Interference cancellation circuit
US4912721A (en) * 1988-04-29 1990-03-27 Scientific-Atlanta, Inc. Cable television spread spectrum data transmission apparatus
US4991165A (en) * 1988-09-28 1991-02-05 The United States Of America As Represented By The Secretary Of The Navy Digital adaptive interference canceller
JPH0622352B2 (ja) * 1988-10-12 1994-03-23 勝敏 嶺 ノイズ除去方法
US5260707A (en) * 1988-12-22 1993-11-09 Hughes Aircraft Company Phase coherent interference signal suppression system and method
US5117505A (en) * 1990-02-22 1992-05-26 American Nucleonics Corporation Interference cancellation system having noise reduction features and method
US5125108A (en) * 1990-02-22 1992-06-23 American Nucleonics Corporation Interference cancellation system for interference signals received with differing phases
US5225902A (en) * 1990-03-20 1993-07-06 Scientific-Atlanta, Inc. Automatic frequency selection in a bi-directional cable television system
WO1991015064A1 (en) * 1990-03-20 1991-10-03 Scientific-Atlanta, Inc. Cable television radio frequency return method
JPH03280682A (ja) * 1990-03-28 1991-12-11 Matsushita Electric Ind Co Ltd キーイングパルス処理回路
US5133017A (en) * 1990-04-09 1992-07-21 Active Noise And Vibration Technologies, Inc. Noise suppression system
US5208837A (en) * 1990-08-31 1993-05-04 Allied-Signal Inc. Stationary interference cancellor
US5140699A (en) * 1990-12-24 1992-08-18 American Nucleonics Corporation Detector DC offset compensator
US5319636A (en) * 1991-11-14 1994-06-07 Codex Corporation Device and method for linear listener echo cancellation
US5148117A (en) * 1991-11-25 1992-09-15 American Nucleonics Corporation Adaptive feed-forward method and apparatus for amplifier noise reduction
JP3225560B2 (ja) * 1991-11-27 2001-11-05 日本電気株式会社 交差偏波干渉補償装置
JP2780576B2 (ja) * 1992-08-05 1998-07-30 日本電気株式会社 干渉波除去装置

Also Published As

Publication number Publication date
EP0748120A1 (en) 1996-12-11
DE69606095T2 (de) 2000-05-25
US5742591A (en) 1998-04-21
DE69606095D1 (de) 2000-02-17
CA2176409C (en) 2000-08-22
CA2176409A1 (en) 1996-12-08
EP0748120B1 (en) 2000-01-12
ATE188828T1 (de) 2000-01-15

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