ATE509431T1 - Digitaler echolöscher - Google Patents

Digitaler echolöscher

Info

Publication number
ATE509431T1
ATE509431T1 AT05700641T AT05700641T ATE509431T1 AT E509431 T1 ATE509431 T1 AT E509431T1 AT 05700641 T AT05700641 T AT 05700641T AT 05700641 T AT05700641 T AT 05700641T AT E509431 T1 ATE509431 T1 AT E509431T1
Authority
AT
Austria
Prior art keywords
signal
modem
echo canceller
output signal
wireless
Prior art date
Application number
AT05700641T
Other languages
English (en)
Inventor
Jorgen Dalby-Jakobsen
Morten Laursen
Kent Messerschmidt
Jacob Randbaek
Original Assignee
Rtx Telecom As
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 Rtx Telecom As filed Critical Rtx Telecom As
Application granted granted Critical
Publication of ATE509431T1 publication Critical patent/ATE509431T1/de

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
    • H04B3/234—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 using double talk detection

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)
  • Telephone Function (AREA)
AT05700641T 2004-02-11 2005-02-11 Digitaler echolöscher ATE509431T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200400210 2004-02-11
PCT/DK2005/000091 WO2005078950A2 (en) 2004-02-11 2005-02-11 Telephone line extender for high speed modem data transfer

Publications (1)

Publication Number Publication Date
ATE509431T1 true ATE509431T1 (de) 2011-05-15

Family

ID=34854482

Family Applications (1)

Application Number Title Priority Date Filing Date
AT05700641T ATE509431T1 (de) 2004-02-11 2005-02-11 Digitaler echolöscher

Country Status (4)

Country Link
EP (1) EP1719260B1 (de)
AT (1) ATE509431T1 (de)
AU (1) AU2005213750B2 (de)
WO (1) WO2005078950A2 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5675644A (en) * 1995-09-26 1997-10-07 Qualcomm Incorporated Method and apparatus for canceling echo accounting for delay variations
GB2330746B (en) * 1997-10-24 2002-07-17 Mitel Corp Double-talk insensitive NLMS algorithm
CN1243416C (zh) * 2000-03-27 2006-02-22 朗迅科技公司 用自适应判决门限来完成通话重叠检测的方法和装置

Also Published As

Publication number Publication date
WO2005078950A3 (en) 2005-11-10
AU2005213750A1 (en) 2005-08-25
AU2005213750B2 (en) 2010-04-22
WO2005078950A2 (en) 2005-08-25
EP1719260B1 (de) 2011-05-11
EP1719260A2 (de) 2006-11-08

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties