SE9103511L - PROCEDURE AND DEVICE FOR ELIMINATION OF ECO BY A TRANSMISSION DEVICE, SUCH AS A MODEM - Google Patents

PROCEDURE AND DEVICE FOR ELIMINATION OF ECO BY A TRANSMISSION DEVICE, SUCH AS A MODEM

Info

Publication number
SE9103511L
SE9103511L SE9103511A SE9103511A SE9103511L SE 9103511 L SE9103511 L SE 9103511L SE 9103511 A SE9103511 A SE 9103511A SE 9103511 A SE9103511 A SE 9103511A SE 9103511 L SE9103511 L SE 9103511L
Authority
SE
Sweden
Prior art keywords
eco
modem
elimination
procedure
transmission device
Prior art date
Application number
SE9103511A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE515940C2 (en
SE9103511D0 (en
Inventor
H Laamanen
Original Assignee
Nokia Oy Ab
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 Nokia Oy Ab filed Critical Nokia Oy Ab
Publication of SE9103511D0 publication Critical patent/SE9103511D0/en
Publication of SE9103511L publication Critical patent/SE9103511L/en
Publication of SE515940C2 publication Critical patent/SE515940C2/en

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
    • 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
    • H04B3/231—Echo cancellers using readout of a memory to provide the echo replica

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
SE9103511A 1990-11-28 1991-11-27 Method and apparatus for eliminating echoes in a transmission device such as a modem SE515940C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI905864A FI87869C (en) 1990-11-28 1990-11-28 Method and apparatus for removing echoes in a transmission device such as modems

Publications (3)

Publication Number Publication Date
SE9103511D0 SE9103511D0 (en) 1991-11-27
SE9103511L true SE9103511L (en) 1992-05-29
SE515940C2 SE515940C2 (en) 2001-10-29

Family

ID=8531480

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9103511A SE515940C2 (en) 1990-11-28 1991-11-27 Method and apparatus for eliminating echoes in a transmission device such as a modem

Country Status (4)

Country Link
DE (1) DE4138567C2 (en)
FI (1) FI87869C (en)
GB (1) GB2253771B (en)
SE (1) SE515940C2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0691756A1 (en) * 1994-07-07 1996-01-10 Siemens-Albis Aktiengesellschaft Echo canceller with analogue coarse canceller and digital fine canceller
US5649010A (en) * 1994-07-20 1997-07-15 Siemens Schweiz Ag Send filter for an echo canceler
FI102444B (en) * 1997-02-14 1998-11-30 Tellabs Oy Procedure for the correction of form errors in multiphase pulses in the frequency band transmission caused by pulse density modulation
GB2396279A (en) * 2002-12-09 2004-06-16 Acuid Corp Simultaneous bidirectional differential signalling interface with echo cancellation
US7702004B2 (en) 2002-12-09 2010-04-20 Alexander Roger Deas Simultaneous bidirectional differential signalling interface

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1186764A (en) * 1982-06-23 1985-05-07 Akira Kanemasa Echo canceler
US4669116A (en) * 1982-12-09 1987-05-26 Regents Of The University Of California Non-linear echo cancellation of data signals

Also Published As

Publication number Publication date
FI905864A (en) 1992-05-29
GB2253771B (en) 1994-10-26
GB2253771A (en) 1992-09-16
SE515940C2 (en) 2001-10-29
DE4138567C2 (en) 2000-12-14
DE4138567A1 (en) 1992-06-04
GB9125366D0 (en) 1992-01-29
FI87869C (en) 1993-02-25
FI905864A0 (en) 1990-11-28
FI87869B (en) 1992-11-13
SE9103511D0 (en) 1991-11-27

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Legal Events

Date Code Title Description
NUG Patent has lapsed