ES2126547T3 - Terminal de trasmision de datos en una via analogica bidireccional con anulacion de eco acoplada al ritmo de recepcion. - Google Patents

Terminal de trasmision de datos en una via analogica bidireccional con anulacion de eco acoplada al ritmo de recepcion.

Info

Publication number
ES2126547T3
ES2126547T3 ES87402983T ES87402983T ES2126547T3 ES 2126547 T3 ES2126547 T3 ES 2126547T3 ES 87402983 T ES87402983 T ES 87402983T ES 87402983 T ES87402983 T ES 87402983T ES 2126547 T3 ES2126547 T3 ES 2126547T3
Authority
ES
Spain
Prior art keywords
data transmission
transmission terminal
receiving rate
coupled
analogue way
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
ES87402983T
Other languages
English (en)
Inventor
Sylvie Luisa Marcos
Odile Marie Madeleine Macchi
Jean-Bernard Louis Po Pinteaux
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.)
Societe Anonyme de Telecommunications SAT
Original Assignee
Societe Anonyme de Telecommunications SAT
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 Societe Anonyme de Telecommunications SAT filed Critical Societe Anonyme de Telecommunications SAT
Application granted granted Critical
Publication of ES2126547T3 publication Critical patent/ES2126547T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04B3/235—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 combined with adaptive equaliser

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Bidirectional Digital Transmission (AREA)

Abstract

ENTRE UN CIRCUITO DE EMISION (5) Y UN CIRCUITO DE RECEPCION (6) ACOPLADOS A UNA LINEA (1) BIDIRECCIONAL POR UNA ACOPLADOR HIBRIDO (2), UN CANCELADOR DE ECO (7) SINTETIZA UN ECO ESTIMADO A PARTIR DEL MUESTREO DE UNA SEÑAL ANALOGICA EMITIDA (S), MUESTREADA A LA MISMA FRECUENCIA (FE) QUE LA SEÑAL RECIBIDA (R); LA FRECUENCIA DE MUESTREO (FE) ESTA GOBERNADA POR EL CIRCUITO DE RECEPCION (6), NO SINCRONO DEL CIRCUITO DE EMISION (5). UN TERMINAL COMO ESTE NO NECESITA FILTRO DE INTERPOLACION A LA ENTRADA DEL CIRCUITO DE RECEPCION (6) Y PERMITE EL ACOPLAMIENTO OPTIMO DEL CANCELADOR DE ECO (7) CON UN ECUALIZADOR.
ES87402983T 1986-12-30 1987-12-24 Terminal de trasmision de datos en una via analogica bidireccional con anulacion de eco acoplada al ritmo de recepcion. Expired - Lifetime ES2126547T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8618334A FR2614484B1 (fr) 1986-12-30 1986-12-30 Terminal de transmission de donnees sur une voie analogique bidirectionnelle avec annulation d'echo couplee au rythme reception

Publications (1)

Publication Number Publication Date
ES2126547T3 true ES2126547T3 (es) 1999-04-01

Family

ID=9342415

Family Applications (1)

Application Number Title Priority Date Filing Date
ES87402983T Expired - Lifetime ES2126547T3 (es) 1986-12-30 1987-12-24 Terminal de trasmision de datos en una via analogica bidireccional con anulacion de eco acoplada al ritmo de recepcion.

Country Status (9)

Country Link
US (1) US4891801A (es)
EP (1) EP0275790B1 (es)
JP (1) JPS63232631A (es)
AT (1) ATE173572T1 (es)
CA (1) CA1278351C (es)
DE (1) DE3752233T2 (es)
ES (1) ES2126547T3 (es)
FR (1) FR2614484B1 (es)
GR (1) GR3029267T3 (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5062102A (en) * 1988-12-01 1991-10-29 Nec Corporation Echo canceller with means for determining filter coefficients from autocorrelation and cross-correlation coefficients
JP2785336B2 (ja) * 1989-06-13 1998-08-13 日本電気株式会社 音響エコーキャンセラのトレーニング方式
US5125024A (en) * 1990-03-28 1992-06-23 At&T Bell Laboratories Voice response unit
US5784361A (en) * 1997-01-31 1998-07-21 Coherent Communications Systems Corp. Bi-directional asynchronous telecommunication audio signal processing
US6052462A (en) * 1997-07-10 2000-04-18 Tellabs Operations, Inc. Double talk detection and echo control circuit
US7050388B2 (en) * 2003-08-07 2006-05-23 Quellan, Inc. Method and system for crosstalk cancellation
CN103053513A (zh) * 2012-12-28 2013-04-24 辽宁师范大学 吡唑醚菌酯纳米制剂及制备方法
US10965332B2 (en) * 2019-03-25 2021-03-30 Cisco Technology, Inc. Echo cancellation (EC) training for a full duplex (FDX) amplifier

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074086A (en) * 1976-09-07 1978-02-14 Bell Telephone Laboratories, Incorporated Joint adaptive echo canceller and equalizer for two-wire full-duplex data transmission
DE2921780C3 (de) * 1979-05-29 1982-02-11 Siemens AG, 1000 Berlin und 8000 München Verfahren und Schaltungsanordnung zur Übertragung von Daten über eine Zweidrahtleitung
JPS6046899B2 (ja) * 1980-09-26 1985-10-18 日本電気株式会社 反響消去装置
US4411006A (en) * 1981-09-09 1983-10-18 Communication Satellite Corporation Digital bit rate synchronizer for digital echo cancellers and similar signal processing devices
GB2111354B (en) * 1981-11-19 1985-06-19 Standard Telephones Cables Ltd Echo canceller
FR2534754A1 (fr) * 1982-10-15 1984-04-20 Trt Telecom Radio Electr Recepteur pour modem de transmission de donnees, comportant un annuleur d'echo et un egaliseur

Also Published As

Publication number Publication date
FR2614484A1 (fr) 1988-10-28
EP0275790B1 (fr) 1998-11-18
ATE173572T1 (de) 1998-12-15
FR2614484B1 (fr) 1994-04-08
EP0275790A1 (fr) 1988-07-27
DE3752233D1 (de) 1998-12-24
CA1278351C (fr) 1990-12-27
GR3029267T3 (en) 1999-05-28
DE3752233T2 (de) 1999-06-10
US4891801A (en) 1990-01-02
JPS63232631A (ja) 1988-09-28

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