ES8507745A1 - Un circuito de linea con compensacion de eco, y un metodo para su ajuste. - Google Patents

Un circuito de linea con compensacion de eco, y un metodo para su ajuste.

Info

Publication number
ES8507745A1
ES8507745A1 ES531763A ES531763A ES8507745A1 ES 8507745 A1 ES8507745 A1 ES 8507745A1 ES 531763 A ES531763 A ES 531763A ES 531763 A ES531763 A ES 531763A ES 8507745 A1 ES8507745 A1 ES 8507745A1
Authority
ES
Spain
Prior art keywords
digital
signals
path
line circuit
correction coefficients
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
Application number
ES531763A
Other languages
English (en)
Other versions
ES531763A0 (es
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES531763A0 publication Critical patent/ES531763A0/es
Publication of ES8507745A1 publication Critical patent/ES8507745A1/es
Expired 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
    • H04B3/238—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)
  • Bidirectional Digital Transmission (AREA)

Abstract

CIRCUITO DE LINEA CON COMPENSACION DE ECO, Y UN METODO PARA SU AJUSTE.COMPRENDE: VIAS DE COMUNICACION PRIMERA Y SEGUNDA POR LAS QUE SE PROPAGAN SEN/ALES PRIMERAS Y SEGUNDAS CONSTITUIDAS POR SEN/ALES DIGITALES CON UNA CADENCIA DE MUESTREO PREDETERMINADA; ELEMENTOS PARA GENERAR SEN/ALES DE CORRECCION DIGITALES; Y ELEMENTOS PARA CAMBIAR LAS SEN/ALES DE CORRECCION DIGITALES CON LAS SEN/ALES DIGITALES SEGUNDAS EN LA VIA SEGUNDA, Y QUE INCLUYEN ELEMENTOS PARA AUMENTAR LA CADENCIA DE MUESTREO DE LAS SEN/ALES DE CORRECCION DIGITALES.
ES531763A 1983-04-18 1984-04-18 Un circuito de linea con compensacion de eco, y un metodo para su ajuste. Expired ES8507745A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US48598783A 1983-04-18 1983-04-18

Publications (2)

Publication Number Publication Date
ES531763A0 ES531763A0 (es) 1985-08-16
ES8507745A1 true ES8507745A1 (es) 1985-08-16

Family

ID=23930175

Family Applications (1)

Application Number Title Priority Date Filing Date
ES531763A Expired ES8507745A1 (es) 1983-04-18 1984-04-18 Un circuito de linea con compensacion de eco, y un metodo para su ajuste.

Country Status (5)

Country Link
EP (1) EP0122594A3 (es)
JP (1) JPS6035841A (es)
AU (1) AU2680084A (es)
BE (1) BE899447R (es)
ES (1) ES8507745A1 (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6053336A (ja) * 1983-09-02 1985-03-27 Nec Corp 反響消去装置
JPH0720070B2 (ja) * 1985-08-14 1995-03-06 株式会社日立製作所 デイジタル平衡回路を有するｐｃｍ符号復号器
US4811342A (en) * 1985-11-12 1989-03-07 Racal Data Communications Inc. High speed analog echo canceller
BE905760A (fr) * 1986-11-16 1987-05-18 Electronique Et Telecomm Bell Compensateur d'echo reglable.
ATE77719T1 (de) * 1986-11-17 1992-07-15 Alcatel Nv Einstellbarer echokompensator.
GB8719307D0 (en) * 1987-08-14 1987-09-23 Gen Electric Co Plc Echo canceller
ES2038887B1 (es) * 1991-04-18 1995-05-01 Aplicaciones Electronicas Quas Hibrida digital para multiconferencia.
IL130236A0 (en) 1997-01-20 2000-06-01 Siemens Ag Circuit for two-wire/four wire conversion

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4268727A (en) * 1979-03-14 1981-05-19 International Telephone And Telegraph Corporation Adaptive digital echo cancellation circuit
US4302631A (en) * 1979-11-28 1981-11-24 International Telephone And Telegraph Corporation Decimator apparatus for decreasing the word rate of a digital signal of the type employed in digital telephone systems
DE3070437D1 (en) * 1980-06-18 1985-05-09 Ericsson Telefon Ab L M Subscriber line audio processing circuit apparatus
JPS6046899B2 (ja) * 1980-09-26 1985-10-18 日本電気株式会社 反響消去装置
NL8102225A (nl) * 1981-05-07 1982-12-01 Philips Nv Inrichting voor het compenseren van echosignalen.

Also Published As

Publication number Publication date
EP0122594A3 (en) 1986-09-10
EP0122594A2 (en) 1984-10-24
AU2680084A (en) 1984-10-25
BE899447R (fr) 1984-10-18
ES531763A0 (es) 1985-08-16
JPS6035841A (ja) 1985-02-23

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970203