DE3162893D1 - Digital echo canceller comprising an analog to digital converter with adjustable volume range - Google Patents

Digital echo canceller comprising an analog to digital converter with adjustable volume range

Info

Publication number
DE3162893D1
DE3162893D1 DE8181201014T DE3162893T DE3162893D1 DE 3162893 D1 DE3162893 D1 DE 3162893D1 DE 8181201014 T DE8181201014 T DE 8181201014T DE 3162893 T DE3162893 T DE 3162893T DE 3162893 D1 DE3162893 D1 DE 3162893D1
Authority
DE
Germany
Prior art keywords
digital
analog
echo canceller
volume range
adjustable volume
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
DE8181201014T
Other languages
English (en)
Inventor
Michel Combier
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.)
Telecommunications Radioelectriques et Telephoniques SA TRT
Original Assignee
Telecommunications Radioelectriques et Telephoniques SA TRT
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 Telecommunications Radioelectriques et Telephoniques SA TRT filed Critical Telecommunications Radioelectriques et Telephoniques SA TRT
Application granted granted Critical
Publication of DE3162893D1 publication Critical patent/DE3162893D1/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)
DE8181201014T 1980-09-19 1981-09-11 Digital echo canceller comprising an analog to digital converter with adjustable volume range Expired DE3162893D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8020251A FR2490901A1 (fr) 1980-09-19 1980-09-19 Annuleur d'echo numerique muni d'un convertisseur analogique-numerique a dynamique reglable

Publications (1)

Publication Number Publication Date
DE3162893D1 true DE3162893D1 (en) 1984-05-03

Family

ID=9246120

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8181201014T Expired DE3162893D1 (en) 1980-09-19 1981-09-11 Digital echo canceller comprising an analog to digital converter with adjustable volume range

Country Status (7)

Country Link
US (1) US4549048A (de)
EP (1) EP0048515B1 (de)
JP (1) JPS5783936A (de)
AU (1) AU548564B2 (de)
CA (1) CA1181148A (de)
DE (1) DE3162893D1 (de)
FR (1) FR2490901A1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5912639A (ja) * 1982-07-12 1984-01-23 Toshiba Corp エコ−キヤンセラ
FR2534427A1 (fr) * 1982-10-11 1984-04-13 Trt Telecom Radio Electr Annuleur d'echo pour signal de donnees en bande de base
FR2534754A1 (fr) * 1982-10-15 1984-04-20 Trt Telecom Radio Electr Recepteur pour modem de transmission de donnees, comportant un annuleur d'echo et un egaliseur
LU85402A1 (de) * 1983-12-01 1984-09-11 Siemens Ag Verfahren und schaltungsanordnung zur kompensation von uebersprech-u./o.echosignalen
US4747132A (en) * 1984-04-09 1988-05-24 Matsushita Electric Industrial Co., Ltd. Howling canceller
US4610010A (en) * 1984-12-10 1986-09-02 Ncr Corporation Control circuit for an adaptive hybrid control in a local area network
US4742510A (en) * 1986-04-04 1988-05-03 Massachusetts Institute Of Technology Near and far echo canceller for data communications
US4989221A (en) * 1987-03-30 1991-01-29 Codex Corporation Sample rate converter
GB8719307D0 (en) * 1987-08-14 1987-09-23 Gen Electric Co Plc Echo canceller
DE3778702D1 (de) * 1987-10-30 1992-06-04 Ibm Analog-digital/digital-analogwandlersystem und geraet zur echoannullierung unter verwendung eines solchen systems.
GB2214378B (en) * 1988-01-21 1992-07-22 Codex Corp A multiple mode modem and method of using the same
US7702004B2 (en) * 2002-12-09 2010-04-20 Alexander Roger Deas Simultaneous bidirectional differential signalling interface

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836734A (en) * 1971-12-03 1974-09-17 Communications Satellite Corp Adaptive echo canceller with multi-increment gain coefficient corrections
JPS5218132A (en) * 1975-08-01 1977-02-10 Hitachi Ltd Binary circuit
FR2358790A1 (fr) * 1976-07-13 1978-02-10 Trt Telecom Radio Electr Annuleur d'echo auto-adaptatif pour transmission de donnees en bande de base
FR2377734A1 (fr) * 1977-01-17 1978-08-11 Trt Telecom Radio Electr Annuleur d'echo numerique pour modem de transmission de donnees par modulation d'une porteuse
US4113997A (en) * 1977-07-12 1978-09-12 Communications Satellite, Corporation Analog to digital signal of logarithmic format converter and analog to pseudo-rms value converter and echo canceller utilizing same
US4268727A (en) * 1979-03-14 1981-05-19 International Telephone And Telegraph Corporation Adaptive digital echo cancellation circuit
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.

Also Published As

Publication number Publication date
EP0048515A1 (de) 1982-03-31
FR2490901A1 (fr) 1982-03-26
JPS5783936A (en) 1982-05-26
JPH0142533B2 (de) 1989-09-13
CA1181148A (en) 1985-01-15
FR2490901B1 (de) 1984-02-10
EP0048515B1 (de) 1984-03-28
AU7543481A (en) 1982-03-25
AU548564B2 (en) 1985-12-19
US4549048A (en) 1985-10-22

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee