DE3267115D1 - Arrangement for cancelling echo signals - Google Patents

Arrangement for cancelling echo signals

Info

Publication number
DE3267115D1
DE3267115D1 DE8282200523T DE3267115T DE3267115D1 DE 3267115 D1 DE3267115 D1 DE 3267115D1 DE 8282200523 T DE8282200523 T DE 8282200523T DE 3267115 T DE3267115 T DE 3267115T DE 3267115 D1 DE3267115 D1 DE 3267115D1
Authority
DE
Germany
Prior art keywords
arrangement
echo signals
cancelling echo
cancelling
signals
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
DE8282200523T
Other languages
English (en)
Inventor
Johannes Jozef Wilhelmus Kalfs
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of DE3267115D1 publication Critical patent/DE3267115D1/de
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

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)
DE8282200523T 1981-05-07 1982-05-03 Arrangement for cancelling echo signals Expired DE3267115D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8102225A NL8102225A (nl) 1981-05-07 1981-05-07 Inrichting voor het compenseren van echosignalen.

Publications (1)

Publication Number Publication Date
DE3267115D1 true DE3267115D1 (en) 1985-12-05

Family

ID=19837449

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8282200523T Expired DE3267115D1 (en) 1981-05-07 1982-05-03 Arrangement for cancelling echo signals

Country Status (6)

Country Link
US (1) US4481385A (de)
EP (1) EP0065796B1 (de)
JP (1) JPS57197941A (de)
CA (1) CA1189926A (de)
DE (1) DE3267115D1 (de)
NL (1) NL8102225A (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP0122594A3 (de) * 1983-04-18 1986-09-10 International Standard Electric Corporation Leitungsschaltung mit Echokompensation
US4629829A (en) * 1984-12-14 1986-12-16 Motorola, Inc. Full duplex speakerphone for radio and landline telephones
NZ214905A (en) * 1985-01-29 1988-09-29 British Telecomm Noise cancellation by adaptive filter compensates for timing variations
JPH0616592B2 (ja) * 1985-12-23 1994-03-02 富士通株式会社 Ｆｄｍモデム
US4989221A (en) * 1987-03-30 1991-01-29 Codex Corporation Sample rate converter
DE3783605T2 (de) * 1987-04-22 1993-07-15 Ibm Echokompensationseinrichtung fuer datenuebertragung ueber eine zweidrahtleitung.
EP0287743B1 (de) * 1987-04-22 1993-03-03 International Business Machines Corporation Echokompensationseinrichtung mit Korrektur von Phasenabweichungen
DE69221753T2 (de) * 1991-03-15 1998-02-26 Philips Electronics Nv Datenempfänger mit einer Regelschleife mit verringerter Abtastfrequenz
IT1254819B (it) * 1992-02-24 1995-10-11 Sits Soc It Telecom Siemens Procedimento e dispositivo per la cancellazione numerica adattativa dell'eco generato in collegamenti telefonici non stazionari
US20020021693A1 (en) * 1998-05-01 2002-02-21 At&T Corp. Sharing of voice-switched network and internet resources for intelligent session processing
US6563802B2 (en) * 1998-06-22 2003-05-13 Intel Corporation Echo cancellation with dynamic latency adjustment
US6480532B1 (en) * 1999-07-13 2002-11-12 Stmicroelectronics, Inc. Echo cancellation for an ADSL modem
TW574791B (en) * 2002-05-15 2004-02-01 Topic Semiconductor Corp Hardware reduction method for digital echo canceller or near-end crosstalk canceller

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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.
JPS6046899B2 (ja) * 1980-09-26 1985-10-18 日本電気株式会社 反響消去装置
US4411006A (en) * 1981-09-09 1983-10-18 Communication Satellite Corporation Digital bit rate synchronizer for digital echo cancellers and similar signal processing devices

Also Published As

Publication number Publication date
NL8102225A (nl) 1982-12-01
EP0065796B1 (de) 1985-10-30
US4481385A (en) 1984-11-06
JPS57197941A (en) 1982-12-04
CA1189926A (en) 1985-07-02
EP0065796A1 (de) 1982-12-01

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee