SE8901542D0 - Foerfarande och anordning foer att undvika felaktig ekoeliminering och/eller utjaemning i en telekommunikationsanlaeggning - Google Patents

Foerfarande och anordning foer att undvika felaktig ekoeliminering och/eller utjaemning i en telekommunikationsanlaeggning

Info

Publication number
SE8901542D0
SE8901542D0 SE8901542A SE8901542A SE8901542D0 SE 8901542 D0 SE8901542 D0 SE 8901542D0 SE 8901542 A SE8901542 A SE 8901542A SE 8901542 A SE8901542 A SE 8901542A SE 8901542 D0 SE8901542 D0 SE 8901542D0
Authority
SE
Sweden
Prior art keywords
elimination
equalization
eco
procedure
converters
Prior art date
Application number
SE8901542A
Other languages
English (en)
Other versions
SE8901542L (sv
SE463589B (sv
Inventor
E A Eriksson
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 SE8901542A priority Critical patent/SE463589B/sv
Publication of SE8901542D0 publication Critical patent/SE8901542D0/sv
Priority to PCT/SE1990/000177 priority patent/WO1990013185A1/en
Priority to AU55638/90A priority patent/AU622799B2/en
Priority to CA002030623A priority patent/CA2030623C/en
Priority to EP90850106A priority patent/EP0399968B1/en
Priority to ES90850106T priority patent/ES2049459T3/es
Priority to DK90850106.7T priority patent/DK0399968T3/da
Priority to BR909006719A priority patent/BR9006719A/pt
Priority to DE69006634T priority patent/DE69006634T2/de
Priority to JP02507022A priority patent/JP3124771B2/ja
Priority to US07/498,755 priority patent/US5189637A/en
Priority to IE146690A priority patent/IE65531B1/en
Publication of SE8901542L publication Critical patent/SE8901542L/sv
Priority to KR90702496A priority patent/KR950014543B1/ko
Priority to NO905147A priority patent/NO302008B1/no
Priority to FI905993A priority patent/FI100371B/sv
Publication of SE463589B publication Critical patent/SE463589B/sv

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
    • 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)
  • Analogue/Digital Conversion (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Facsimile Transmission Control (AREA)
  • Mobile Radio Communication Systems (AREA)
SE8901542A 1989-04-27 1989-04-27 Foerfarande foer att undvika felaktig ekoeliminering och/eller utjaemning till foeljd av olinjaeriteter i en d/a-omvandlare och/eller en a/d-omvandlare i en telekommunikationsanlaeggning, samt anordning foer utoevande av foerfarandet i samband med d/a-omvandling och anordning foer utoevande av foerfarandet i samband med a/d-omvandling SE463589B (sv)

Priority Applications (15)

Application Number Priority Date Filing Date Title
SE8901542A SE463589B (sv) 1989-04-27 1989-04-27 Foerfarande foer att undvika felaktig ekoeliminering och/eller utjaemning till foeljd av olinjaeriteter i en d/a-omvandlare och/eller en a/d-omvandlare i en telekommunikationsanlaeggning, samt anordning foer utoevande av foerfarandet i samband med d/a-omvandling och anordning foer utoevande av foerfarandet i samband med a/d-omvandling
JP02507022A JP3124771B2 (ja) 1989-04-27 1990-03-20 電気通信システムにおける誤った反響除去及び／又は等化を回避する方法及び装置
DK90850106.7T DK0399968T3 (da) 1989-04-27 1990-03-20 Fremgangsmåde og indretning til undgåelse af fejlagtig fjernelse af ekko og/eller undgåelse af fejlagtig modforvrængning i et telekommunikationssystem
DE69006634T DE69006634T2 (de) 1989-04-27 1990-03-20 Verfahren und Vorrichtung zum Vermeiden falscher Echoelimination und/oder zum Vermeiden falscher Entzerrung in einem Telekommunikationssystem.
CA002030623A CA2030623C (en) 1989-04-27 1990-03-20 A method and arrangement for avoiding erroneous echo-elimination and/or equalization in a telecommunication system
EP90850106A EP0399968B1 (en) 1989-04-27 1990-03-20 A method and arrangement for avoiding erroneous echoelimination and/or for avoiding erroneous equalization in a telecommunication system
ES90850106T ES2049459T3 (es) 1989-04-27 1990-03-20 Un metodo y una disposicion para evitar la eliminacion de eco y/o la ecualizacion erroneas en un sistema de telecomunicacion.
PCT/SE1990/000177 WO1990013185A1 (en) 1989-04-27 1990-03-20 A method and arrangement for avoiding erroneous echo-elimination and/or equalization in a telecommunication system
BR909006719A BR9006719A (pt) 1989-04-27 1990-03-20 Processo e sistema para evitar eliminacao de ecos erronea e/ou equalizacao
AU55638/90A AU622799B2 (en) 1989-04-27 1990-03-20 A method and arrangement for avoiding erroneous echo-elimination and/or equalization in a telecommunication system
US07/498,755 US5189637A (en) 1989-04-27 1990-03-26 Method and apparatus for preventing erroneous echoelimination and equalization
IE146690A IE65531B1 (en) 1989-04-27 1990-04-25 A method and arrangement for avoiding erroneous echoelimination and/or equalization in a telecommunication system
KR90702496A KR950014543B1 (en) 1989-04-27 1990-11-22 Echoelimination and euqalization of telecommunication
NO905147A NO302008B1 (no) 1989-04-27 1990-11-28 Fremgangsmåte og anordning for å unngå feilaktig ekkoeliminering og/eller utjevning i et telekommunikasjonssystem
FI905993A FI100371B (sv) 1989-04-27 1990-12-04 Förfarande och anordning för att undvika felaktig ekoeliminering och/e ller utjämning i en telekommunikationsanläggning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8901542A SE463589B (sv) 1989-04-27 1989-04-27 Foerfarande foer att undvika felaktig ekoeliminering och/eller utjaemning till foeljd av olinjaeriteter i en d/a-omvandlare och/eller en a/d-omvandlare i en telekommunikationsanlaeggning, samt anordning foer utoevande av foerfarandet i samband med d/a-omvandling och anordning foer utoevande av foerfarandet i samband med a/d-omvandling

Publications (3)

Publication Number Publication Date
SE8901542D0 true SE8901542D0 (sv) 1989-04-27
SE8901542L SE8901542L (sv) 1990-10-28
SE463589B SE463589B (sv) 1990-12-10

Family

ID=20375822

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8901542A SE463589B (sv) 1989-04-27 1989-04-27 Foerfarande foer att undvika felaktig ekoeliminering och/eller utjaemning till foeljd av olinjaeriteter i en d/a-omvandlare och/eller en a/d-omvandlare i en telekommunikationsanlaeggning, samt anordning foer utoevande av foerfarandet i samband med d/a-omvandling och anordning foer utoevande av foerfarandet i samband med a/d-omvandling

Country Status (15)

Country Link
US (1) US5189637A (sv)
EP (1) EP0399968B1 (sv)
JP (1) JP3124771B2 (sv)
KR (1) KR950014543B1 (sv)
AU (1) AU622799B2 (sv)
BR (1) BR9006719A (sv)
CA (1) CA2030623C (sv)
DE (1) DE69006634T2 (sv)
DK (1) DK0399968T3 (sv)
ES (1) ES2049459T3 (sv)
FI (1) FI100371B (sv)
IE (1) IE65531B1 (sv)
NO (1) NO302008B1 (sv)
SE (1) SE463589B (sv)
WO (1) WO1990013185A1 (sv)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5157653A (en) * 1990-08-03 1992-10-20 Coherent Communications Systems Corp. Residual echo elimination with proportionate noise injection
SE501248C2 (sv) * 1993-05-14 1994-12-19 Ericsson Telefon Ab L M Metod och ekosläckare för ekoutsläckning med ett antal kaskadkopplade adaptiva filter
US5650954A (en) * 1996-01-30 1997-07-22 Seagate Technology, Inc. Frequency and time domain adaptive filtration in a sampled communication channel
US5812537A (en) * 1995-09-29 1998-09-22 Paradyne Corporation Echo canceling method and apparatus for data over cellular
DE19611941C1 (de) * 1996-03-26 1997-12-11 Siemens Ag Schaltungsanordnung zur Leitungsanpassung und Echounterdrückung
US6184692B1 (en) * 1997-10-29 2001-02-06 Lucent Technologies, Inc. Loop back test apparatus and technique
US6028929A (en) * 1997-11-14 2000-02-22 Tellabs Operations, Inc. Echo canceller employing dual-H architecture having improved non-linear echo path detection
AU1463800A (en) 1998-11-02 2000-05-22 Broadcom Corporation Measurement of nonlinear distortion in transmitters
DE10005620A1 (de) 2000-02-09 2001-08-30 Infineon Technologies Ag Schaltungsanordnung
US6813311B1 (en) 2000-03-14 2004-11-02 Globespan Virata Corporation Non-linear echo cancellation for wireless modems and the like
DE10318603B4 (de) 2003-04-24 2005-03-10 Infineon Technologies Ag Eingangsempfängerschaltung
US20050035891A1 (en) * 2003-08-14 2005-02-17 Tripath Technology, Inc. Digital-to-analog converter with level control
JP2009135595A (ja) * 2007-11-28 2009-06-18 Sony Corp スイッチトキャパシタ回路、スイッチトキャパシタフィルタ、およびシグマデルタａｄ変換器

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3732410A (en) * 1969-12-22 1973-05-08 Postmaster Department Res Labo Self adaptive filter and control circuit therefor
US4129863A (en) * 1977-10-03 1978-12-12 Regents Of The University Of California Weighted capacitor analog/digital converting apparatus and method
US4200863A (en) * 1977-10-03 1980-04-29 The Regents Of The University Of California Weighted capacitor analog/digital converting apparatus and method
US4476456A (en) * 1981-11-03 1984-10-09 Texas Instruments Incorporated Combination of an analog to digital converter and sampling switch
US4669116A (en) * 1982-12-09 1987-05-26 Regents Of The University Of California Non-linear echo cancellation of data signals
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.
NL8700983A (nl) * 1987-04-27 1988-11-16 Philips Nv Digitaal-analoog omzetter.
EP0313706B1 (en) * 1987-10-30 1992-04-29 International Business Machines Corporation Analog-to-digital and digital-to-analog conversion system and echo cancellation device including the same
US4999830A (en) * 1989-09-25 1991-03-12 At&T Bell Laboratories Communication system analog-to-digital converter using echo information to improve resolution
US4977591A (en) * 1989-11-17 1990-12-11 Nynex Corporation Dual mode LMS nonlinear data echo canceller

Also Published As

Publication number Publication date
IE65531B1 (en) 1995-11-01
KR950014543B1 (en) 1995-12-05
FI100371B (sv) 1997-11-14
WO1990013185A1 (en) 1990-11-01
NO905147D0 (no) 1990-11-28
AU622799B2 (en) 1992-04-16
EP0399968B1 (en) 1994-02-16
JPH03505661A (ja) 1991-12-05
FI905993A0 (fi) 1990-12-04
NO302008B1 (no) 1998-01-05
IE901466L (en) 1990-10-27
BR9006719A (pt) 1991-08-06
CA2030623C (en) 2001-10-16
EP0399968A1 (en) 1990-11-28
DE69006634T2 (de) 1994-05-26
AU5563890A (en) 1990-11-16
CA2030623A1 (en) 1990-10-28
KR920700498A (ko) 1992-02-19
NO905147L (no) 1990-11-28
SE8901542L (sv) 1990-10-28
SE463589B (sv) 1990-12-10
DK0399968T3 (da) 1994-06-06
JP3124771B2 (ja) 2001-01-15
ES2049459T3 (es) 1994-04-16
DE69006634D1 (de) 1994-03-24
US5189637A (en) 1993-02-23

Similar Documents

Publication Publication Date Title
SE8901542D0 (sv) Foerfarande och anordning foer att undvika felaktig ekoeliminering och/eller utjaemning i en telekommunikationsanlaeggning
DE3780013D1 (de) Einstellbarer echokompensator.
AU636940B2 (en) Analog-to-digital converter
SE8005409L (sv) Linjeenhet for sammankoppling av en analog linje med en digital telekommunikationsutrustning
FR2646304B1 (fr) Terminal videotex repondeur
DE3779708D1 (de) Schaltungsanordnung zur isolationsgewaehrung zwischen den uebertragungswegen eines freisprechapparates.
PT83030A (de) Schaltungsanordnung zur unterdrueckung von stoersignalen auf dem empfangszweig einet unter verwendung von elektronischen bauelementen aufgebauten und damit ohne sprachuebertrager realisierten teilnehemeranschlusschaltung
SE8206124D0 (sv) Forfarande och anordning for adaptiv analog/digital-omvandling
SE8601785L (sv) Prestandahojande signalbehandlingsanordning och sett
FI892097A (fi) Foerfarande och anordning foer att skydda ett dataoeverfoeringsnaet.
SE7902834L (sv) Overvakningssett och- anordning for signalamplitudomvandlare
AU520220B2 (en) Line amplifier coarse overvoltage protection
GB2270217B (en) Detecing faults in power lines
DE3768975D1 (de) Echokompensator.
DE3786483D1 (de) Adaptive vorrichtung zur kompensierung der verzerrungen eines eingangssignals mit quadraturtraegern.
NO933234L (no) Amplituderegulator
EP0141934B1 (de) Schaltungsanordnung zur Erzeugung und Anschaltung der Rufsignalspannung für Teilnehmerstationen eines digitalen Zeitmultiplex-Fernsprechsystems
DK178990A (da) Kredsloeb med indstillelige aktive og/eller passive komponenter
SU1376239A1 (ru) Активный фильтр
AU541648B2 (en) Telephone ring signalling system
DE3264166D1 (en) Parallel operation of telephone equipment on a digital loop
NO147579C (no) Koblingsanordning til aa koble en overfoeringsinnretning hos et modem til en telefonledning
EP0460223A4 (en) Board for surge absorbing device of communication line
KR880006856A (ko) 에어프리 전송 데이타 제공 시스템 및 그 방법
JPS5425143A (en) Control circuit

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 8901542-4

Format of ref document f/p: F

NUG Patent has lapsed