SE9003661L - Foerfarande och anordning foer att minska den erforderliga storleken hos ett digitalt filter i samband med ekoeliminering i en abonnentlinjekrets - Google Patents

Foerfarande och anordning foer att minska den erforderliga storleken hos ett digitalt filter i samband med ekoeliminering i en abonnentlinjekrets

Info

Publication number
SE9003661L
SE9003661L SE9003661A SE9003661A SE9003661L SE 9003661 L SE9003661 L SE 9003661L SE 9003661 A SE9003661 A SE 9003661A SE 9003661 A SE9003661 A SE 9003661A SE 9003661 L SE9003661 L SE 9003661L
Authority
SE
Sweden
Prior art keywords
elimination
eco
procedure
reduce
connection
Prior art date
Application number
SE9003661A
Other languages
Unknown language ( )
English (en)
Other versions
SE467436B (sv
SE9003661D0 (sv
Inventor
B G Loefmark
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE9003661A priority Critical patent/SE467436B/sv
Publication of SE9003661D0 publication Critical patent/SE9003661D0/sv
Priority to DE4192840A priority patent/DE4192840C2/de
Priority to PCT/SE1991/000694 priority patent/WO1992009147A1/en
Priority to JP50056192A priority patent/JP3232091B2/ja
Priority to DE4192840T priority patent/DE4192840T1/de
Priority to US07/783,866 priority patent/US5446728A/en
Publication of SE9003661L publication Critical patent/SE9003661L/sv
Publication of SE467436B publication Critical patent/SE467436B/sv
Priority to GB9307844A priority patent/GB2265529B/en

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
SE9003661A 1990-11-16 1990-11-16 Foerfarande och anordning foer att minska den erforderliga storleken hos ett digitalt filter i samband med ekoeliminering i en abonnentlinjekrets SE467436B (sv)

Priority Applications (7)

Application Number Priority Date Filing Date Title
SE9003661A SE467436B (sv) 1990-11-16 1990-11-16 Foerfarande och anordning foer att minska den erforderliga storleken hos ett digitalt filter i samband med ekoeliminering i en abonnentlinjekrets
DE4192840A DE4192840C2 (de) 1990-11-16 1991-10-15 Verfahren und Anordnung zur Verwendung für die Beseitigung von Echos in einer Teilnehmeranschluss-Schaltung
PCT/SE1991/000694 WO1992009147A1 (en) 1990-11-16 1991-10-15 A method and arrangement for use in the elimination of echoes in a subscriber line circuit
JP50056192A JP3232091B2 (ja) 1990-11-16 1991-10-15 加入者回線回路のエコー除去の方法および装置
DE4192840T DE4192840T1 (de) 1990-11-16 1991-10-15 Verfahren und Anordnung zur Verwendung für die Beseitigung von Echos in einer Teilnehmeranschluss-Schaltung
US07/783,866 US5446728A (en) 1990-11-16 1991-10-29 Method and arrangement for use in the elimination of echoes in a subscriber line circuit
GB9307844A GB2265529B (en) 1990-11-16 1993-04-15 A method and arrangement for use in the elimination of echoes in a subscriber line circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9003661A SE467436B (sv) 1990-11-16 1990-11-16 Foerfarande och anordning foer att minska den erforderliga storleken hos ett digitalt filter i samband med ekoeliminering i en abonnentlinjekrets

Publications (3)

Publication Number Publication Date
SE9003661D0 SE9003661D0 (sv) 1990-11-16
SE9003661L true SE9003661L (sv) 1992-05-17
SE467436B SE467436B (sv) 1992-07-13

Family

ID=20380934

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9003661A SE467436B (sv) 1990-11-16 1990-11-16 Foerfarande och anordning foer att minska den erforderliga storleken hos ett digitalt filter i samband med ekoeliminering i en abonnentlinjekrets

Country Status (6)

Country Link
US (1) US5446728A (sv)
JP (1) JP3232091B2 (sv)
DE (2) DE4192840T1 (sv)
GB (1) GB2265529B (sv)
SE (1) SE467436B (sv)
WO (1) WO1992009147A1 (sv)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5577027A (en) * 1995-04-18 1996-11-19 Intel Corporation Apparatus and method for effectively eliminating the echo signal of transmitting signal in a modem
US5917809A (en) * 1997-01-08 1999-06-29 Analog Devices, Inc. Asymmetric digital subscriber loop modem and method
DE19953347A1 (de) * 1999-11-05 2001-06-28 Infineon Technologies Ag Echokompensationsvorrichtung
US7139392B1 (en) * 2000-06-20 2006-11-21 Sbc Technology Resources, Inc. Device and method for suppressing DSL signal echo induced by bridgetap
US6703192B1 (en) * 2003-02-28 2004-03-09 Eastman Kodak Company Photographic peracid bleaching composition, processing kit, and method of use

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4270027A (en) * 1979-11-28 1981-05-26 International Telephone And Telegraph Corporation Telephone subscriber line unit with sigma-delta digital to analog converter
US4528551A (en) * 1979-11-28 1985-07-09 International Telephone And Telegraph Corporation Digital to analog converter employing sigma-delta modulation for use in telephone systems
FR2538975A1 (fr) * 1982-12-30 1984-07-06 Trt Telecom Radio Electr Procede utilise dans un dispositif d'annulation d'echo pour la mesure d'un retard d'echo et dispositif de mise en oeuvre de ce procede
US4621356A (en) * 1983-07-18 1986-11-04 Scipione Fred J Communications interface for duplex transmission and reception of data and other signals over telephone lines
US4989221A (en) * 1987-03-30 1991-01-29 Codex Corporation Sample rate converter
JP2810052B2 (ja) * 1987-11-18 1998-10-15 株式会社日立製作所 伝送装置
GB2214378B (en) * 1988-01-21 1992-07-22 Codex Corp A multiple mode modem and method of using the same
US4995030A (en) * 1988-02-01 1991-02-19 Memotec Datacom, Inc. Far end echo cancellation method and apparatus
JP2615795B2 (ja) * 1988-04-07 1997-06-04 日本電気株式会社 適応形反響消去装置
ATE132675T1 (de) * 1990-11-27 1996-01-15 Gordon M Jacobs Digitaler datenumsetzer
JP3526196B2 (ja) * 1997-01-07 2004-05-10 株式会社東芝 アダプティブアンテナ

Also Published As

Publication number Publication date
SE467436B (sv) 1992-07-13
WO1992009147A1 (en) 1992-05-29
JP3232091B2 (ja) 2001-11-26
GB9307844D0 (en) 1993-06-23
SE9003661D0 (sv) 1990-11-16
GB2265529A (en) 1993-09-29
GB2265529B (en) 1994-12-07
DE4192840C2 (de) 1995-11-09
JPH06502524A (ja) 1994-03-17
DE4192840T1 (de) 1993-11-18
US5446728A (en) 1995-08-29

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