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CA2045250A1 - Eliminateur d'echos comportant un filtre numerique adaptatif associe a un circuit de modulation delta-sigma - Google Patents

Eliminateur d'echos comportant un filtre numerique adaptatif associe a un circuit de modulation delta-sigma

Info

Publication number
CA2045250A1
CA2045250A1 CA2045250A CA2045250A CA2045250A1 CA 2045250 A1 CA2045250 A1 CA 2045250A1 CA 2045250 A CA2045250 A CA 2045250A CA 2045250 A CA2045250 A CA 2045250A CA 2045250 A1 CA2045250 A1 CA 2045250A1
Authority
CA
Canada
Prior art keywords
signal
delta
echo
modulation circuit
digital filter
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.)
Granted
Application number
CA2045250A
Other languages
English (en)
Other versions
CA2045250C (fr
Inventor
Yutaka Takahashi
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Publication of CA2045250A1 publication Critical patent/CA2045250A1/fr
Application granted granted Critical
Publication of CA2045250C publication Critical patent/CA2045250C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • H04B3/238—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers using initial training sequence

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)
CA002045250A 1990-06-25 1991-06-21 Eliminateur d'echos comportant un filtre numerique adaptatif associe a un circuit de modulation delta-sigma Expired - Fee Related CA2045250C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP16590990A JP3158414B2 (ja) 1990-06-25 1990-06-25 エコーキャンセラ
JP2-165909 1990-06-25

Publications (2)

Publication Number Publication Date
CA2045250A1 true CA2045250A1 (fr) 1991-12-26
CA2045250C CA2045250C (fr) 1997-03-18

Family

ID=15821314

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002045250A Expired - Fee Related CA2045250C (fr) 1990-06-25 1991-06-21 Eliminateur d'echos comportant un filtre numerique adaptatif associe a un circuit de modulation delta-sigma

Country Status (5)

Country Link
US (1) US5222084A (fr)
EP (1) EP0464500B1 (fr)
JP (1) JP3158414B2 (fr)
CA (1) CA2045250C (fr)
DE (1) DE69103977T2 (fr)

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US5500892A (en) * 1994-02-14 1996-03-19 Brooktree Corporation Echo canceller
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US5649010A (en) * 1994-07-20 1997-07-15 Siemens Schweiz Ag Send filter for an echo canceler
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NL9401860A (nl) * 1994-11-08 1996-06-03 Duran Bv Luidsprekersysteem met bestuurde richtinggevoeligheid.
US5706344A (en) * 1996-03-29 1998-01-06 Digisonix, Inc. Acoustic echo cancellation in an integrated audio and telecommunication system
US5793754A (en) * 1996-03-29 1998-08-11 Eurotherm Controls, Inc. Two-way, two-wire analog/digital communication system
US6234658B1 (en) * 1996-06-07 2001-05-22 Duality Semiconductor, Inc. Method and apparatus for producing signal processing circuits in the delta sigma domain
FI106326B (fi) * 1996-09-23 2001-01-15 Tellabs Oy Kytkentä kaiunpoistavan moninopeusmodeemin sovittamiseksi linjalle sekä kytkentämenetelmä
FI101436B1 (fi) 1996-10-02 1998-06-15 Ericsson Telefon Ab L M Johdinpiiri ja menetelmä johdinpiiriä varten
WO1998032241A2 (fr) * 1997-01-20 1998-07-23 Siemens Aktiengesellschaft Circuit pour la transformation deux fils-quatre fils
US6965578B1 (en) 1998-09-30 2005-11-15 Conexant Systems, Inc. Echo canceling method and apparatus for digital data communication system
US6480532B1 (en) * 1999-07-13 2002-11-12 Stmicroelectronics, Inc. Echo cancellation for an ADSL modem
US6590976B1 (en) * 1999-08-19 2003-07-08 Agere Systems Inc. Two-step algorithm for training an echo cancellation filter
AU2302401A (en) * 1999-12-09 2001-06-18 Frederick Johannes Bruwer Speech distribution system
US6754187B1 (en) 2000-04-06 2004-06-22 Inter-Tel, Inc. Performance enhancement system for digital PBX
US7280060B1 (en) 2000-05-23 2007-10-09 Marvell International Ltd. Communication driver
US6775529B1 (en) 2000-07-31 2004-08-10 Marvell International Ltd. Active resistive summer for a transformer hybrid
USRE41831E1 (en) 2000-05-23 2010-10-19 Marvell International Ltd. Class B driver
US7095348B1 (en) 2000-05-23 2006-08-22 Marvell International Ltd. Communication driver
US6462688B1 (en) 2000-12-18 2002-10-08 Marvell International, Ltd. Direct drive programmable high speed power digital-to-analog converter
US7194037B1 (en) 2000-05-23 2007-03-20 Marvell International Ltd. Active replica transformer hybrid
US7433665B1 (en) 2000-07-31 2008-10-07 Marvell International Ltd. Apparatus and method for converting single-ended signals to a differential signal, and transceiver employing same
US7312739B1 (en) 2000-05-23 2007-12-25 Marvell International Ltd. Communication driver
US7113121B1 (en) 2000-05-23 2006-09-26 Marvell International Ltd. Communication driver
US7606547B1 (en) 2000-07-31 2009-10-20 Marvell International Ltd. Active resistance summer for a transformer hybrid
US7248628B2 (en) 2001-03-02 2007-07-24 Shaeffer Derek K Method and apparatus for a programmable filter
US6961373B2 (en) * 2002-07-01 2005-11-01 Solarflare Communications, Inc. Method and apparatus for channel equalization
US7809021B2 (en) * 2002-07-10 2010-10-05 Solarflare Communications, Inc. Communication system and encoding method having low overhead
US7065167B2 (en) * 2002-07-10 2006-06-20 Solarflare Communications, Inc. Method and apparatus for constellation shaping
US7133425B2 (en) * 2002-07-10 2006-11-07 Solarflare Communications, Inc. Communication system
US7154976B2 (en) * 2002-08-29 2006-12-26 Lsi Logic Corporation Frequency controller
US7164764B2 (en) * 2002-11-07 2007-01-16 Solarflare Communications, Inc. Method and apparatus for precode crosstalk mitigation
US6912208B2 (en) * 2002-11-07 2005-06-28 Solarflare Communications, Inc. Method and apparatus for equalization and crosstalk mitigation
EP1625668B1 (fr) * 2003-04-28 2014-11-12 Marvell International, Ltd. Annulation d'interferences de voies multiples
US20040213354A1 (en) * 2003-04-28 2004-10-28 Jones William W. Mixed domain cancellation
US7002897B2 (en) * 2003-04-28 2006-02-21 Solarflare Communications, Inc. Multiple channel interference cancellation
US8363535B2 (en) 2003-04-28 2013-01-29 Marvell International Ltd. Frequency domain echo and next cancellation
DE10342056B4 (de) 2003-09-11 2005-11-10 Infineon Technologies Ag Additionsschaltung für Sigma-Delta-Modulatorschaltungen
US7190194B2 (en) 2004-02-13 2007-03-13 Nec Electronics Corporation Active hybrid transformer circuit having a replica driver
US7298173B1 (en) 2004-10-26 2007-11-20 Marvell International Ltd. Slew rate control circuit for small computer system interface (SCSI) differential driver
US7312662B1 (en) 2005-08-09 2007-12-25 Marvell International Ltd. Cascode gain boosting system and method for a transmitter
US7577892B1 (en) 2005-08-25 2009-08-18 Marvell International Ltd High speed iterative decoder
JP2007235502A (ja) * 2006-03-01 2007-09-13 Sony Corp オーディオ通信システム
US8761387B2 (en) 2006-05-04 2014-06-24 Mindspeed Technologies, Inc. Analog transmit crosstalk canceller
US7720068B2 (en) 2006-08-23 2010-05-18 Solarflare Communications, Inc. Method and system for a multi-rate gigabit media independent interface
US7808407B2 (en) 2007-06-15 2010-10-05 Solarflare Communications, Inc. Sub-channel distortion mitigation in parallel digital systems
US8027279B2 (en) * 2007-09-17 2011-09-27 Lantiq Deutschland Gmbh Echo cancellation
US7948862B2 (en) 2007-09-26 2011-05-24 Solarflare Communications, Inc. Crosstalk cancellation using sliding filters
WO2009064439A2 (fr) 2007-11-12 2009-05-22 Solarflare Communications, Inc. Système de communication à veille active
US7692462B2 (en) * 2008-01-25 2010-04-06 Himax Technologies Limited Delay-locked loop and a stabilizing method thereof
US8254490B2 (en) * 2010-07-19 2012-08-28 Plx Technology, Inc. Reducing transmit signal components of a receive signal of a transceiver using a shared DAC architecture
WO2017037880A1 (fr) * 2015-09-01 2017-03-09 日本電気株式会社 Modulateur δς, émetteur et intégrateur
CN118129970B (zh) * 2024-05-06 2024-08-06 国家海洋技术中心 一种大气压力测量系统

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Publication number Priority date Publication date Assignee Title
FR2475322A1 (fr) * 1980-02-01 1981-08-07 Trt Telecom Radio Electr Annuleur d'echo a circuits de calcul simplifies
US4582963A (en) * 1982-07-29 1986-04-15 Rockwell International Corporation Echo cancelling using adaptive bulk delay and filter
FR2569322B1 (fr) * 1984-08-17 1986-12-05 Trt Telecom Radio Electr Annuleur d'echo utilisant la modulation delta
GB2164827B (en) * 1984-09-19 1988-04-20 Nec Corp Method of cancelling echoes in full-duplex data transmission system
NL8600815A (nl) * 1986-03-28 1987-10-16 At & T & Philips Telecomm Inrichting voor het kompenseren van niet-lineaire vervorming in een te digitaliseren ingangssignaal en een echokompensatiestelsel voorzien van een dergelijke inrichting.
US4742510A (en) * 1986-04-04 1988-05-03 Massachusetts Institute Of Technology Near and far echo canceller for data communications
US4972436A (en) * 1988-10-14 1990-11-20 Hayes Microcomputer Products, Inc. High performance sigma delta based analog modem front end
US4987569A (en) * 1989-04-05 1991-01-22 Codex Corporation Fast training echo canceller
US5029167A (en) * 1989-09-13 1991-07-02 Northern Telecom Limited Coefficient storage reduction in adaptive filters in echo cancellers or decision feedback equalizers

Also Published As

Publication number Publication date
CA2045250C (fr) 1997-03-18
DE69103977D1 (de) 1994-10-20
DE69103977T2 (de) 1995-04-13
JPH0454718A (ja) 1992-02-21
JP3158414B2 (ja) 2001-04-23
EP0464500A2 (fr) 1992-01-08
EP0464500A3 (en) 1992-02-12
EP0464500B1 (fr) 1994-09-14
US5222084A (en) 1993-06-22

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