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EP0960521A4 - Apparatus and method for adapting an echo canceller in a communication system - Google Patents

Apparatus and method for adapting an echo canceller in a communication system

Info

Publication number
EP0960521A4
EP0960521A4 EP98957984A EP98957984A EP0960521A4 EP 0960521 A4 EP0960521 A4 EP 0960521A4 EP 98957984 A EP98957984 A EP 98957984A EP 98957984 A EP98957984 A EP 98957984A EP 0960521 A4 EP0960521 A4 EP 0960521A4
Authority
EP
European Patent Office
Prior art keywords
adapting
communication system
echo canceller
canceller
echo
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.)
Withdrawn
Application number
EP98957984A
Other languages
German (de)
French (fr)
Other versions
EP0960521A1 (en
Inventor
Lijun Tan
Hanyu Liu
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of EP0960521A1 publication Critical patent/EP0960521A1/en
Publication of EP0960521A4 publication Critical patent/EP0960521A4/en
Withdrawn legal-status Critical Current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
    • H04B3/237—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 two adaptive filters, e.g. for near end and for end echo cancelling
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephonic Communication Services (AREA)
EP98957984A 1997-12-12 1998-11-13 Apparatus and method for adapting an echo canceller in a communication system Withdrawn EP0960521A4 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US98969297A 1997-12-12 1997-12-12
US989692 1997-12-12
PCT/US1998/024365 WO1999031866A1 (en) 1997-12-12 1998-11-13 Apparatus and method for adapting an echo canceller in a communication system

Publications (2)

Publication Number Publication Date
EP0960521A1 EP0960521A1 (en) 1999-12-01
EP0960521A4 true EP0960521A4 (en) 2004-08-04

Family

ID=25535373

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98957984A Withdrawn EP0960521A4 (en) 1997-12-12 1998-11-13 Apparatus and method for adapting an echo canceller in a communication system

Country Status (7)

Country Link
EP (1) EP0960521A4 (en)
CN (1) CN1247664A (en)
AU (1) AU1411299A (en)
BR (1) BR9807321A (en)
CA (1) CA2279360C (en)
ID (1) ID27681A (en)
WO (1) WO1999031866A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6480532B1 (en) * 1999-07-13 2002-11-12 Stmicroelectronics, Inc. Echo cancellation for an ADSL modem
EP1117191A1 (en) * 2000-01-13 2001-07-18 Telefonaktiebolaget Lm Ericsson Echo cancelling method
EP1286509A3 (en) * 2001-08-21 2004-02-04 Siemens Aktiengesellschaft Method and apparatus for echo compensation in a telecommunication network
SE525053C2 (en) 2002-04-26 2004-11-16 Global Ip Sound Europ Ab echo cancellation
EP1599948B1 (en) * 2002-07-02 2006-05-31 Siemens Aktiengesellschaft Propagation-time-dependent switch off of the echo compensation in a packet network
US7050388B2 (en) 2003-08-07 2006-05-23 Quellan, Inc. Method and system for crosstalk cancellation
CN101040512B (en) 2004-10-13 2010-05-26 皇家飞利浦电子股份有限公司 Echo cancellation device and method
US10177810B2 (en) * 2016-09-02 2019-01-08 Marvell World Trade Ltd. Systems and methods for echo or interference cancellation power-saving management in a communication system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4742510A (en) * 1986-04-04 1988-05-03 Massachusetts Institute Of Technology Near and far echo canceller for data communications
JPH0650829B2 (en) * 1986-09-16 1994-06-29 日本電気株式会社 Eco-Cancerra Modem
US4970715A (en) * 1987-03-27 1990-11-13 Universal Data Systems, Inc. Modem with improved remote echo location and cancellation
US4995030A (en) * 1988-02-01 1991-02-19 Memotec Datacom, Inc. Far end echo cancellation method and apparatus
EP0403716B1 (en) * 1989-06-22 1995-09-13 International Business Machines Corporation Echo cancelling device providing adjustment of the echo canceller coefficients during full-duplex transmission
US5280473A (en) * 1990-02-08 1994-01-18 Universal Data Systems, Inc. Modem with echo cancellation
EP0543568A2 (en) * 1991-11-22 1993-05-26 AT&T Corp. High resolution filtering using low resolution processors
US5353348A (en) * 1993-05-14 1994-10-04 Jrc International, Inc. Double echo cancelling system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
No further relevant documents disclosed *
See also references of WO9931866A1 *

Also Published As

Publication number Publication date
AU1411299A (en) 1999-07-05
CN1247664A (en) 2000-03-15
CA2279360A1 (en) 1999-06-24
BR9807321A (en) 2000-04-18
ID27681A (en) 2001-04-19
WO1999031866A1 (en) 1999-06-24
CA2279360C (en) 2002-10-22
EP0960521A1 (en) 1999-12-01

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB NL

17P Request for examination filed

Effective date: 19991227

A4 Supplementary search report drawn up and despatched

Effective date: 20040617

17Q First examination report despatched

Effective date: 20050512

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20051123