ATE435553T1 - Verfahren zur erkennung einer digitalen verbindung - Google Patents

Verfahren zur erkennung einer digitalen verbindung

Info

Publication number
ATE435553T1
ATE435553T1 AT00914472T AT00914472T ATE435553T1 AT E435553 T1 ATE435553 T1 AT E435553T1 AT 00914472 T AT00914472 T AT 00914472T AT 00914472 T AT00914472 T AT 00914472T AT E435553 T1 ATE435553 T1 AT E435553T1
Authority
AT
Austria
Prior art keywords
modem
digital connection
determination
detecting
configurations
Prior art date
Application number
AT00914472T
Other languages
English (en)
Inventor
Haixiang Liang
Mark Gonikberg
Original Assignee
Altocom Inc
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 Altocom Inc filed Critical Altocom Inc
Application granted granted Critical
Publication of ATE435553T1 publication Critical patent/ATE435553T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4917—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes
    • H04L25/4927—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes using levels matched to the quantisation levels of the channel

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Communication Control (AREA)
AT00914472T 1999-02-24 2000-02-11 Verfahren zur erkennung einer digitalen verbindung ATE435553T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/256,922 US6504865B1 (en) 1999-02-24 1999-02-24 Digital connection detection technique
PCT/US2000/002506 WO2000051302A1 (en) 1999-02-24 2000-02-11 Method for detecting a digital connection

Publications (1)

Publication Number Publication Date
ATE435553T1 true ATE435553T1 (de) 2009-07-15

Family

ID=22974157

Family Applications (1)

Application Number Title Priority Date Filing Date
AT00914472T ATE435553T1 (de) 1999-02-24 2000-02-11 Verfahren zur erkennung einer digitalen verbindung

Country Status (6)

Country Link
US (2) US6504865B1 (de)
EP (1) EP1155543B1 (de)
AT (1) ATE435553T1 (de)
AU (1) AU3585800A (de)
DE (1) DE60042482D1 (de)
WO (1) WO2000051302A1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6356593B1 (en) * 1998-04-28 2002-03-12 Lucent Technologies Inc. Data optimized codec
WO2001001570A1 (de) * 1999-06-25 2001-01-04 Infineon Technologies Ag Programmierbares digitales bandpass-filter für eine kodec-schaltung
AU2388400A (en) * 1999-12-27 2001-07-09 Telogy Networks, Inc. Digital modem echo canceler enhancement
US7664512B2 (en) * 2006-08-10 2010-02-16 L3 Communications Integrated Systems, L.P. Datalink throughput reduction via energy detection
US8326580B2 (en) * 2008-01-29 2012-12-04 Qualcomm Incorporated Sparse sampling of signal innovations
US8477689B2 (en) * 2009-03-26 2013-07-02 The John Hopkins University System and methods for distributed medium access control and QOS scheduling in mobile ad-hoc networks
US9912373B1 (en) * 2016-10-19 2018-03-06 Whatsapp Inc. Techniques to detect echoes using audio fingerprinting
US12531653B2 (en) * 2023-07-19 2026-01-20 Maxlinear, Inc. Low complexity soft decision optical receiver

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5020078A (en) * 1989-08-11 1991-05-28 Bell Communications Research, Inc. Baudrate timing recovery technique
US5818870A (en) 1990-08-28 1998-10-06 Canon Kabushiki Kaisha Digital communication device
US5267300A (en) 1991-10-07 1993-11-30 Racal-Datacom, Inc. High speed digital data transmission over switched voice network
CA2118277C (en) 1993-12-23 1998-09-22 Alexander Feiner Facility type determination technique
US5528679A (en) 1994-01-27 1996-06-18 Primary Access Corporation Automatic detection of digital call paths in a telephone system
JP4291410B2 (ja) 1994-12-09 2009-07-08 ブレント タウンシェンド、 高速データ転送エンコーダ、デコーダ、システム、エンコード方法および復号方法
US5793809A (en) 1995-05-31 1998-08-11 Paradyne Corporation Transparent technique for Mu-law modems to detect an all-digital circuit connection
US5815496A (en) * 1995-09-29 1998-09-29 Lucent Technologies Inc. Cascade echo canceler arrangement
DE19782004T1 (de) 1996-09-24 1999-09-09 Motorola Inc Verfahren zur Bildung eines tatsächlichen Alphabets von Symbolen, das in einem Kommunikationssystem zu verwenden ist, in einem Kommunikationssystem verwendbarer Adapter, und Kommunikationssystem
US5875229A (en) 1996-10-15 1999-02-23 Motorola Inc. System and device for, and method of, detecting, characterizing, and mitigating deterministic distortion in a communications network
US5926505A (en) 1996-10-16 1999-07-20 Cirrus Logic, Inc. Device, system, and method for modem communication utilizing two-step mapping
US6115395A (en) * 1996-11-15 2000-09-05 3Com Corporation Method of detecting network impairments for high speed data communication over conventional subscriber lines
EP1701498B1 (de) 1997-02-20 2009-04-15 Brent Townshend Schnelles Kommunikationssystem für analoge Teilnehmeranschlüsse
US5831561A (en) 1997-04-29 1998-11-03 Lucent Technologies Inc. System and method for dynamically optimizing a symbol table and modem employing the same
US6118812A (en) * 1997-05-20 2000-09-12 Lucent Technologies Inc. Digital equalization in the presence of quantization noise
US6069921A (en) * 1997-10-03 2000-05-30 At&T Corporation System and method for reducing quantization noise
US6452987B1 (en) * 1998-11-25 2002-09-17 Lucent Technologies Inc. Fast start-up in discrete multi-tone (DMT) based communications system
US6301296B1 (en) * 1999-06-24 2001-10-09 Cirrus Logic, Inc. Digital impairment learning sequence

Also Published As

Publication number Publication date
WO2000051302A1 (en) 2000-08-31
DE60042482D1 (de) 2009-08-13
US7075980B2 (en) 2006-07-11
EP1155543B1 (de) 2009-07-01
EP1155543A1 (de) 2001-11-21
US6504865B1 (en) 2003-01-07
AU3585800A (en) 2000-09-14
US20030072360A1 (en) 2003-04-17

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Legal Events

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