KR850700294A - 적응 에코우 소거기의 기능시험방법 - Google Patents

적응 에코우 소거기의 기능시험방법

Info

Publication number
KR850700294A
KR850700294A KR1019850700235A KR850700235A KR850700294A KR 850700294 A KR850700294 A KR 850700294A KR 1019850700235 A KR1019850700235 A KR 1019850700235A KR 850700235 A KR850700235 A KR 850700235A KR 850700294 A KR850700294 A KR 850700294A
Authority
KR
South Korea
Prior art keywords
signal
compensated
echo canceller
threshold
adaptive echo
Prior art date
Application number
KR1019850700235A
Other languages
English (en)
Inventor
인게말 엘리크 달그비스트
Original Assignee
쟌 스텐베르그, 벵트 겜스토오프
테레포오 닉티이 에보라겟트 엘 엠 엘리크썬
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 쟌 스텐베르그, 벵트 겜스토오프, 테레포오 닉티이 에보라겟트 엘 엠 엘리크썬 filed Critical 쟌 스텐베르그, 벵트 겜스토오프
Publication of KR850700294A publication Critical patent/KR850700294A/ko

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

Abstract

내용 없음

Description

적응 에코우 소거기의 기능시험방법
본 발명은 이제 첨부된 도면을 참조로 하여 상세히 설명된다. 제1도는 본 발명에 이용되는 적응 에코우 소거용 장치의 블록도.
본 내용은 부공개 건이므로 전문 내용을 수록하지 않았음.

Claims (3)

  1. 데이터 전송을 위하여 송신장치에 포함된 적응 에코우 소거용 장치의 기능을 시험하는 방법에서, 송신신호가 2선을 4선으로 하는 하이브리드(F)를 경유하여 원격단에 전송하기 위한 장치의 송신측(A, B)에 적용되고 상기 송신신호는 하이브리드(F)로부터 수신된 신호(S2)의 수정을 위하여 장치의 수신기측(C, D)의 수정신호(S)에 항상을 주는데 있어서, 원격적으로부터 전송된 신호가 분리되고, 수정신호(S1)가 공급된 신호로부터 생긴 수신신호(S2)를 보상한 후, 얻어진 보상된 신호는 적어도 하나의 역치(+T 또는 -T)와 비교하고, 보상된 신호(S3)를 위한 성질 한계는 주어진 시간간격동안 역치보다 크거나 작은 보상된 신호(S3)의 부분이 결정되는 것을 특징으로 하는 적응 에코우 소거기의 기능 시험방법
  2. 제1항에 있어서, 보상된 신호(S3)는 반대극성의 2개의 역치(+T, -T)와 비교되는 방법.
  3. 제1항 또는 2항에 있어서, 성질한계는 역치와의 비교후 얻어진 신호가 샘플되고, 주어진 시간 간격동안 역치(+T, -T) 아래로 떨어지거나 초과하여 얻어진 신호샘플의 수가 결정되는 것으로서 결정되는 방법.
    ※참고사항:최초출원 내용에 의하여 공개하는 것임.
KR1019850700235A 1984-02-01 1984-12-19 적응 에코우 소거기의 기능시험방법 KR850700294A (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE8400502-4 1984-02-01
SE8400502A SE441052B (sv) 1984-02-01 1984-02-01 Forfarande for att testa funktionen hos en anordning for adaptiv ekoeliminering
PCT/SE1984/000435 WO1985003607A1 (en) 1984-02-01 1984-12-19 Method to test the function of an adaptive echo canceller

Publications (1)

Publication Number Publication Date
KR850700294A true KR850700294A (ko) 1985-12-26

Family

ID=20354552

Family Applications (2)

Application Number Title Priority Date Filing Date
KR1019850700235D KR890004594B1 (ko) 1984-02-01 1984-12-19 적응 에코우 소거기의 기능시험방법
KR1019850700235A KR850700294A (ko) 1984-02-01 1984-12-19 적응 에코우 소거기의 기능시험방법

Family Applications Before (1)

Application Number Title Priority Date Filing Date
KR1019850700235D KR890004594B1 (ko) 1984-02-01 1984-12-19 적응 에코우 소거기의 기능시험방법

Country Status (22)

Country Link
US (1) US4727566A (ko)
EP (1) EP0199727B1 (ko)
JP (1) JPH06101694B2 (ko)
KR (2) KR890004594B1 (ko)
AU (1) AU572607B2 (ko)
BR (1) BR8407338A (ko)
CA (1) CA1250633A (ko)
DD (1) DD229260A5 (ko)
DE (1) DE3479950D1 (ko)
DK (1) DK443085A (ko)
EG (1) EG16599A (ko)
ES (1) ES8606756A1 (ko)
FI (1) FI860812A (ko)
GR (1) GR850142B (ko)
IT (1) IT1183302B (ko)
MA (1) MA20343A1 (ko)
MX (1) MX157106A (ko)
NO (1) NO853668L (ko)
NZ (1) NZ210795A (ko)
PT (1) PT79914B (ko)
SE (1) SE441052B (ko)
WO (1) WO1985003607A1 (ko)

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DE3583052D1 (de) * 1984-03-30 1991-07-11 Siemens Ag Schaltungsanordnung zum pruefen der funktionsfaehigkeit einer datenuebertragunseinrichtung.
US4689805A (en) * 1986-04-29 1987-08-25 Oy Nokia Ab Method of and a device for correcting signal distortion caused by a cable
FR2615057B1 (fr) * 1987-05-05 1989-06-16 Rahyer Alain Procede et dispositif de simulation de chemin d'echo pour tester des annuleurs d'echo
EP0300352B1 (de) * 1987-07-16 1992-12-09 Siemens Aktiengesellschaft Prüfeinrichtung für digitale Echokompensatoren
NL8701750A (nl) * 1987-07-24 1989-02-16 At & T & Philips Telecomm Zend-ontvanginrichting voor vol-duplex datatransmissie met een echocompensator en testvoorzieningen.
FI915196A (fi) * 1991-11-04 1993-05-05 Nokia Telecommunications Oy Foerfarande foer konvergering av en ekoslaeckare i boerjan av ett samtal
US5943392A (en) * 1997-01-24 1999-08-24 Southwestern Bell Telephone Company Device for measuring echo return loss in a two-two wire line system
US6477492B1 (en) 1999-06-15 2002-11-05 Cisco Technology, Inc. System for automated testing of perceptual distortion of prompts from voice response systems
US6999560B1 (en) 1999-06-28 2006-02-14 Cisco Technology, Inc. Method and apparatus for testing echo canceller performance
US20040179676A1 (en) * 1999-06-30 2004-09-16 Kozo Okuda Speech communication apparatus
US7095348B1 (en) 2000-05-23 2006-08-22 Marvell International Ltd. Communication driver
US7113121B1 (en) 2000-05-23 2006-09-26 Marvell International Ltd. Communication driver
USRE41831E1 (en) 2000-05-23 2010-10-19 Marvell International Ltd. Class B driver
US7312739B1 (en) * 2000-05-23 2007-12-25 Marvell International Ltd. Communication driver
US7280060B1 (en) 2000-05-23 2007-10-09 Marvell International Ltd. Communication driver
US6462688B1 (en) 2000-12-18 2002-10-08 Marvell International, Ltd. Direct drive programmable high speed power digital-to-analog converter
US6775529B1 (en) 2000-07-31 2004-08-10 Marvell International Ltd. Active resistive summer for a transformer hybrid
US7433665B1 (en) 2000-07-31 2008-10-07 Marvell International Ltd. Apparatus and method for converting single-ended signals to a differential signal, and transceiver employing same
US7194037B1 (en) * 2000-05-23 2007-03-20 Marvell International Ltd. Active replica transformer hybrid
US7606547B1 (en) 2000-07-31 2009-10-20 Marvell International Ltd. Active resistance summer for a transformer hybrid
US7298173B1 (en) 2004-10-26 2007-11-20 Marvell International Ltd. Slew rate control circuit for small computer system interface (SCSI) differential driver
US7680250B1 (en) 2004-11-24 2010-03-16 Interactive Quality Services Interactive method and system of testing an automated call telephonic communication system
US7312662B1 (en) 2005-08-09 2007-12-25 Marvell International Ltd. Cascode gain boosting system and method for a transmitter
US7577892B1 (en) 2005-08-25 2009-08-18 Marvell International Ltd High speed iterative decoder
CN102044253B (zh) * 2010-10-29 2012-05-30 深圳创维－Rgb电子有限公司 一种回声信号处理方法、系统及电视机

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US3637954A (en) * 1969-05-22 1972-01-25 Bell Telephone Labor Inc Method and apparatus for dynamic testing of echo suppressors in telephone trunk systems
JPS5325767B2 (ko) * 1974-09-05 1978-07-28
FR2448258A1 (fr) * 1979-02-05 1980-08-29 Trt Telecom Radio Electr Systeme de test d'un dispositif muni d'un annuleur d'echo
US4282411A (en) * 1979-06-04 1981-08-04 Tellabs, Inc. Residual echo suppressor for echo canceller
US4360712A (en) * 1979-09-05 1982-11-23 Communications Satellite Corporation Double talk detector for echo cancellers
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SE426764B (sv) * 1981-11-02 1983-02-07 Ellemtel Utvecklings Ab Forfarande att astadkomma adaptiv ekoeliminering vid overforing av digital information i duplex jemte anordning for utforande av forfarandet
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Also Published As

Publication number Publication date
KR890004594B1 (ko) 1989-11-16
BR8407338A (pt) 1986-11-25
PT79914A (en) 1985-03-01
SE8400502L (ko) 1985-08-02
NZ210795A (en) 1989-01-06
US4727566A (en) 1988-02-23
DD229260A5 (de) 1985-10-30
FI860812A0 (fi) 1986-02-25
IT8519229A0 (it) 1985-01-25
EP0199727B1 (en) 1989-09-27
SE441052B (sv) 1985-09-02
WO1985003607A1 (en) 1985-08-15
DK443085D0 (da) 1985-09-30
SE8400502D0 (sv) 1984-02-01
EG16599A (en) 1989-01-30
AU3833385A (en) 1985-08-27
DE3479950D1 (en) 1989-11-02
ES8606756A1 (es) 1986-04-01
EP0199727A1 (en) 1986-11-05
ES539839A0 (es) 1986-04-01
JPH06101694B2 (ja) 1994-12-12
AU572607B2 (en) 1988-05-12
PT79914B (en) 1986-09-11
JPS61501182A (ja) 1986-06-12
FI860812A (fi) 1986-02-25
DK443085A (da) 1985-09-30
NO853668L (no) 1985-09-18
MA20343A1 (fr) 1985-10-01
GR850142B (ko) 1985-03-04
CA1250633A (en) 1989-02-28
IT1183302B (it) 1987-10-22
MX157106A (es) 1988-10-27

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