BE705969A - - Google Patents

Info

Publication number
BE705969A
BE705969A BE705969DA BE705969A BE 705969 A BE705969 A BE 705969A BE 705969D A BE705969D A BE 705969DA BE 705969 A BE705969 A BE 705969A
Authority
BE
Belgium
Application number
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 filed Critical
Publication of BE705969A publication Critical patent/BE705969A/xx

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)
  • Telephonic Communication Services (AREA)
  • Radio Relay Systems (AREA)
BE705969D 1966-10-31 1967-10-31 BE705969A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US59058366A 1966-10-31 1966-10-31

Publications (1)

Publication Number Publication Date
BE705969A true BE705969A (xx) 1968-03-01

Family

ID=24362823

Family Applications (1)

Application Number Title Priority Date Filing Date
BE705969D BE705969A (xx) 1966-10-31 1967-10-31

Country Status (6)

Country Link
US (1) US3499999A (xx)
BE (1) BE705969A (xx)
DE (1) DE1537740C2 (xx)
GB (1) GB1203801A (xx)
NL (1) NL6714771A (xx)
SE (1) SE327736B (xx)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1263119A (en) * 1968-11-21 1972-02-09 Nippon Electric Co Echo suppressor
US3632905A (en) * 1969-12-19 1972-01-04 Bell Telephone Labor Inc Method for improving the settling time of a transversal filter adaptive echo canceller
US3732410A (en) * 1969-12-22 1973-05-08 Postmaster Department Res Labo Self adaptive filter and control circuit therefor
US3787645A (en) * 1971-05-19 1974-01-22 Nippon Electric Co Echo canceller having two echo path models
US3836734A (en) * 1971-12-03 1974-09-17 Communications Satellite Corp Adaptive echo canceller with multi-increment gain coefficient corrections
US3789165A (en) * 1972-04-24 1974-01-29 Communications Satellite Corp Echo canceller with variable threshold
JPS5317451B2 (xx) * 1973-08-20 1978-06-08
US4144417A (en) * 1975-03-07 1979-03-13 Kokusai Denshin Denwa Kabushiki Kaisha Echo cancelling system
US4087654A (en) * 1975-11-28 1978-05-02 Bell Telephone Laboratories, Incorporated Echo canceller for two-wire full duplex data transmission
USRE31253E (en) * 1976-09-07 1983-05-24 Bell Telephone Laboratories, Incorporated Echo cancellation in two-wire, two-way data transmission systems
SE416367B (sv) * 1976-09-07 1980-12-15 Western Electric Co Ekoelimineringsanordning
US4129753A (en) * 1977-12-09 1978-12-12 Bell Telephone Laboratories, Incorporated Echo canceller using feedback to improve speech detector performance
NL7902053A (nl) * 1979-03-15 1980-09-17 Philips Nv Echocompensator voor homochrone data overdrachtssyste- men.
NL7903759A (nl) * 1979-05-14 1980-11-18 Philips Nv Echocompensator met hoogdoorlaatfilter.
US4243959A (en) * 1979-06-21 1981-01-06 Bell Telephone Laboratories, Incorporated Adaptive filter with tap coefficient leakage
CA1175521A (en) * 1980-04-09 1984-10-02 David D. Falconer Echo cancellation in two-wire full-duplex data transmission with estimation of far-end data components
US4535206A (en) * 1980-04-09 1985-08-13 At&T Bell Laboratories Echo cancellation in two-wire full-duplex data transmission with estimation of far-end data components
US4405840A (en) * 1981-03-05 1983-09-20 Bell Telephone Laboratories, Incorporated Echo canceler far end energy discriminator
NL8220092A (nl) * 1981-03-05 1983-02-01 Western Electric Co Energiebanddiscriminator.
US4491701A (en) * 1981-03-05 1985-01-01 At&T Bell Laboratories Adaptive filter including a far end energy discriminator
GB2159376B (en) * 1984-05-22 1987-08-26 Emi Ltd An echo cancelling system
US4584441A (en) * 1984-09-07 1986-04-22 At&T Bell Laboratories Bidirectional adaptive voice frequency repeater
US4628157A (en) * 1984-09-07 1986-12-09 At&T Bell Laboratories Bidirectional adaptive voice frequency repeater
US4731834A (en) * 1984-10-01 1988-03-15 American Telephone And Telegraph Company, At&T Bell Laboratories Adaptive filter including signal path compensation
US4712235A (en) * 1984-11-19 1987-12-08 International Business Machines Corporation Method and apparatus for improved control and time sharing of an echo canceller
US4811342A (en) * 1985-11-12 1989-03-07 Racal Data Communications Inc. High speed analog echo canceller
CA1242541A (en) * 1985-11-25 1988-09-27 Dany Sylvain Echo cancellation in two-wire transmission path repeaters
FR2612029B1 (fr) * 1987-03-03 1989-05-12 Connan Jean Louis Dispositif pour la realisation de la fonction " mains-libres " dans un poste telephonique, associant les fonctions de commutation de gain et d'annulation d'echo
US4894820A (en) * 1987-03-24 1990-01-16 Oki Electric Industry Co., Ltd. Double-talk detection in an echo canceller
US5014263A (en) * 1987-10-02 1991-05-07 Advanced Micro Devices, Inc. Adaptive echo-canceller with double-talker detection
FR2651077B1 (fr) * 1989-08-18 1994-06-10 Letourneur Gregoire Dispositif de traitement d'echo notamment acoustique dans une ligne telephonique
WO1993005597A1 (en) * 1991-08-30 1993-03-18 Digital Sound Corporation Adaptive echo canceller for voice messaging system
US6912281B2 (en) * 2002-12-30 2005-06-28 Texas Instruments Incorporated Route delay sensitive echo cancellation
US7003098B2 (en) * 2003-05-15 2006-02-21 At&T Corp. Method and system for measurement of the delay through a network link bounded by an echo canceller
CN112671351B (zh) * 2020-12-17 2023-12-15 深圳市国微电子有限公司 一种应用于千兆以太网接收器系统的模拟前端电路

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2825764A (en) * 1954-02-24 1958-03-04 Bell Telephone Labor Inc Cross-control compandor used as echo suppressors
US3184544A (en) * 1961-10-12 1965-05-18 Acf Ind Inc Noise and distortion reduction in communication systems
DE1283293B (de) * 1964-09-10 1968-11-21 Nippon Electric Co Echounterdrueckungsschaltung fuer eine Weitverkehrsnachrichtenverbindung

Also Published As

Publication number Publication date
US3499999A (en) 1970-03-10
DE1537740B2 (de) 1972-07-06
SE327736B (xx) 1970-08-31
DE1537740A1 (de) 1970-03-05
GB1203801A (en) 1970-09-03
NL6714771A (xx) 1968-05-01
DE1537740C2 (de) 1981-10-29

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: WERSTERN ELECTRIC CY INC.

Effective date: 19841031