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TW324803B - Rob bit compensation system and method associated with a receiver or codec - Google Patents

Rob bit compensation system and method associated with a receiver or codec

Info

Publication number
TW324803B
TW324803B TW086107711A TW86107711A TW324803B TW 324803 B TW324803 B TW 324803B TW 086107711 A TW086107711 A TW 086107711A TW 86107711 A TW86107711 A TW 86107711A TW 324803 B TW324803 B TW 324803B
Authority
TW
Taiwan
Prior art keywords
codec
receiver
rob bit
compensation system
method associated
Prior art date
Application number
TW086107711A
Other languages
English (en)
Inventor
Williamlewis Betts
Keith Alan Souders
Original Assignee
Paradyne Corportaion
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 Paradyne Corportaion filed Critical Paradyne Corportaion
Application granted granted Critical
Publication of TW324803B publication Critical patent/TW324803B/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0421—Circuit arrangements therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/12—Arrangements providing for calling or supervisory signals
    • H04J3/125—One of the channel pulses or the synchronisation pulse is also used for transmitting monitoring or supervisory signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
TW086107711A 1996-08-23 1997-06-04 Rob bit compensation system and method associated with a receiver or codec TW324803B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/697,373 US5761247A (en) 1996-08-23 1996-08-23 Rob bit compensation system and method associated with a receiver or codec

Publications (1)

Publication Number Publication Date
TW324803B true TW324803B (en) 1998-01-11

Family

ID=24800889

Family Applications (1)

Application Number Title Priority Date Filing Date
TW086107711A TW324803B (en) 1996-08-23 1997-06-04 Rob bit compensation system and method associated with a receiver or codec

Country Status (5)

Country Link
US (2) US5761247A (zh)
EP (1) EP0929958B1 (zh)
DE (1) DE69733692T2 (zh)
TW (1) TW324803B (zh)
WO (1) WO1998008327A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999037051A3 (en) * 1998-01-20 2000-08-24 Conexant Systems Inc Method and apparatus for synchronizing a data communication system to a periodic digital impairment

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5970103A (en) * 1996-09-06 1999-10-19 Townshend; Brent High speed communications system for analog subscriber connections
KR100422963B1 (ko) * 1994-12-09 2004-03-12 브렌트 타운젠드 소스로부터 가입자로 통신하기 위한 방법과 디지털 데이터 스트림을 복원하기 위한 고속 디코더
US6233275B1 (en) 1994-12-09 2001-05-15 Brent Townshend High speed communications system for analog subscriber connections
AU749051B2 (en) * 1997-02-20 2002-06-20 Brent Townshend A method of detecting the presence of robbed-bit signalling
US6002713A (en) * 1997-10-22 1999-12-14 Pc Tel, Inc. PCM modem equalizer with adaptive compensation for robbed bit signalling
US6178185B1 (en) 1997-11-25 2001-01-23 International Business Machines Corporation Network interface device, method and article of manufacture for providing high bit rate access over robbed bit
US6104730A (en) * 1997-11-25 2000-08-15 International Business Machines Corporation System, method and article of manufacture for high bit rate access over robbed bit trunks
US6356593B1 (en) * 1998-04-28 2002-03-12 Lucent Technologies Inc. Data optimized codec
US6266382B1 (en) * 1998-05-23 2001-07-24 Agere Systems Guardian Corp. Technique for detecting and treating robbed bit signaling in data communications
US6317419B1 (en) * 1998-06-10 2001-11-13 Conexant Systems, Inc. Method and apparatus for training an echo canceler in a PCM modem context
US6721279B1 (en) 1999-02-02 2004-04-13 Pctel, Inc. Method and apparatus for adaptive PCM level estimation and constellation training
US6553518B1 (en) 1999-03-08 2003-04-22 International Business Machines Corporation Severe error detectors, methods and computer program products that use constellation specific error event thresholds to detect severe error events during demodulation of a signal comprising symbols from a plurality of symbol constellations
US6487243B1 (en) 1999-03-08 2002-11-26 International Business Machines Corporation Modems, methods, and computer program products for recovering from errors in a tone reversal sequence between two modems
US6341360B1 (en) 1999-03-08 2002-01-22 International Business Machines Corporation Decision feedback equalizers, methods, and computer program products for detecting severe error events and preserving equalizer filter characteristics in response thereto
US7003030B2 (en) 1999-03-08 2006-02-21 Lenovo (Singapore) Pte. Ltd. Receivers, methods, and computer program products for an analog modem that receives data signals from a digital modem
US6661837B1 (en) 1999-03-08 2003-12-09 International Business Machines Corporation Modems, methods, and computer program products for selecting an optimum data rate using error signals representing the difference between the output of an equalizer and the output of a slicer or detector
US6389064B1 (en) 1999-03-08 2002-05-14 International Business Machines Corporation Modems, methods, and computer program products for identifying a signaling alphabet in variance with an ideal alphabet due to digital impairments
US6381267B1 (en) 1999-03-08 2002-04-30 International Business Machines Corporation Modems, methods, and computer program products for falling back to a lower data rate protocol upon detecting abnormal line conditions during startup
DE19922172B4 (de) * 1999-05-12 2005-06-02 Infineon Technologies Ag Verfahren und Vorrichtung zum Erkennen und Korrigieren von digitalen PCM-Codewörtern innerhalb eines übertragenen Datenstroms
US6661847B1 (en) 1999-05-20 2003-12-09 International Business Machines Corporation Systems methods and computer program products for generating and optimizing signal constellations
US6542551B1 (en) * 1999-05-20 2003-04-01 Pc Tel, Inc. Translation table and constellation design for a PCM modem subjected to alternating robbed bit signaling
DE60045767D1 (de) 1999-07-31 2011-05-05 Altocom Inc Beeinträchtigungskompensationssequenz und dazu in beziehung stehende techniken zur datenkommunikation
US7190727B1 (en) * 1999-07-31 2007-03-13 Broadcom Corporation Categorization of impairments affecting a communication channel
US7203248B1 (en) 1999-07-31 2007-04-10 Broadcom Corporation Impairment sensitive selection of constellation points for communication across a channel
US6721287B1 (en) * 1999-09-09 2004-04-13 Agere Systems Inc. Far echo canceller for PCM modems
US6816545B1 (en) 1999-10-29 2004-11-09 International Business Machines Corporation Systems, methods and computer program products for identifying digital impairments in modems based on clusters and/or skips in pulse code modulation signal levels
US6754258B1 (en) 1999-10-29 2004-06-22 International Business Machines Corporation Systems, methods and computer program products for averaging learned levels in the presence of digital impairments based on patterns
US6839382B1 (en) 1999-10-29 2005-01-04 International Business Machines Corporation System, methods and computer program products for identifying digital impairments in modem signals using signature analysis and signal level comparison analysis
US6967995B1 (en) 1999-10-29 2005-11-22 International Business Machines Corporation Methods, systems and computer program products for carrier drop detection using a variable threshold
US6650657B1 (en) 1999-10-29 2003-11-18 International Business Machines Corporation Systems, methods and computer program products for identifying digital impairments in modem signals
US6662322B1 (en) 1999-10-29 2003-12-09 International Business Machines Corporation Systems, methods, and computer program products for controlling the error rate in a communication device by adjusting the distance between signal constellation points
US6505222B1 (en) 1999-10-29 2003-01-07 International Business Machines Corporation Systems methods and computer program products for controlling undesirable bias in an equalizer
US6823004B1 (en) 1999-10-29 2004-11-23 International Business Machines Corporation Methods, systems and computer program products for monitoring performance of a modem during a connection
US6823017B1 (en) 1999-10-29 2004-11-23 International Business Machines Corporation Systems, methods and computer program products for filtering glitches from measured values in a sequence of code points
US6611563B1 (en) 1999-10-29 2003-08-26 International Business Machines Corporation Systems, methods and computer program products for data mode refinement of modem constellation points
US6792040B1 (en) 1999-10-29 2004-09-14 International Business Machines Corporation Modems having a dual power mode capability and methods of operating same
US6765955B1 (en) 1999-10-29 2004-07-20 International Business Machines Corporation Methods, systems and computer program products establishing a communication configuration for a modem connection to compensate for echo noise
US6826157B1 (en) 1999-10-29 2004-11-30 International Business Machines Corporation Systems, methods, and computer program products for controlling data rate reductions in a communication device by using a plurality of filters to detect short-term bursts of errors and long-term sustainable errors
US6792004B1 (en) 1999-10-29 2004-09-14 International Business Machines Corporation Systems, methods and computer program products for averaging learned levels in the presence of robbed-bit signaling based on proximity
US6987782B2 (en) * 2001-04-06 2006-01-17 Agere Systems, Inc. Method and apparatus for detecting robbed bit location in PCM modems and the like
US7180916B2 (en) * 2001-04-27 2007-02-20 Agere Systems Inc. Compensating for random robbed bit signaling
JP2005501011A (ja) * 2001-06-08 2005-01-13 ユタ ベンチャー ザ セカンド リミテッド パートナーシップ 組織特異的内皮膜タンパク質
US20040157548A1 (en) * 2003-02-06 2004-08-12 Eyer Mark Kenneth Home network interface legacy device adapter

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3452330A (en) * 1967-07-25 1969-06-24 Bell Telephone Labor Inc Asynchronous data transmission system with error detection and retransmission
JPS5842328A (ja) * 1981-09-07 1983-03-11 Hitachi Ltd 遠隔折返し制御方式
JPS58219847A (ja) * 1982-06-14 1983-12-21 Ricoh Co Ltd 再送要求機能付データ通信方式
US4571736A (en) * 1983-10-31 1986-02-18 University Of Southwestern Louisiana Digital communication system employing differential coding and sample robbing
JPS60101769A (ja) * 1983-11-09 1985-06-05 Hitachi Ltd 信号伝送装置
JPH0618358B2 (ja) * 1985-04-09 1994-03-09 沖電気工業株式会社 誤り制御符号化方式
US4885755A (en) * 1985-04-10 1989-12-05 Canon Kabushiki Kaisha Method and apparatus for data communication
US4928276A (en) * 1986-09-02 1990-05-22 Ag Communication Systems Corporation T1 line format for robbed signaling for use with CCITT 32K bit per second ADPCM clear channel transmission and 64KBPS clear channel transmission
US4926355A (en) * 1987-07-02 1990-05-15 General Datacomm, Inc. Digital signal processor architecture with an ALU and a serial processing section operating in parallel
JP2685783B2 (ja) * 1988-03-09 1997-12-03 株式会社東芝 誤り制御方式
US4856030A (en) * 1988-07-20 1989-08-08 Itt Defense Communications Apparatus and methods of locking a receiving modem to a transmitting modem employing a burst signal
US5263081A (en) * 1989-11-01 1993-11-16 Hubbell Incorporated Method and apparatus for providing on-hook transmission for digital loop carrier channel units
DE69220262T2 (de) * 1991-03-08 1997-09-18 Matsushita Electric Ind Co Ltd Einrichtung zur Datenübertragung
US5491695A (en) * 1991-07-17 1996-02-13 Digital Access Corporation Means and method of dial up bridging of network for high bandwidth digital communication
US5282197A (en) * 1992-05-15 1994-01-25 International Business Machines Low frequency audio sub-channel embedded signalling
US5577196A (en) * 1993-04-07 1996-11-19 Sprint Communications Co. L.P. Intelligent digital signal hitless protection switch
US5506956A (en) * 1993-04-07 1996-04-09 Sprint Communications Company L.P. Error correction and channel restoration apparatus for T1 digital links
US5528579A (en) * 1993-06-11 1996-06-18 Adc Telecommunications, Inc. Added bit signalling in a telecommunications system
US5406583A (en) * 1993-06-21 1995-04-11 At&T Corp. Modem with received signals and transmitted signals comprising signal sets
JP2959353B2 (ja) * 1993-09-07 1999-10-06 三菱電機株式会社 エコーキャンセラ装置
US5422876A (en) * 1993-09-07 1995-06-06 Southwestern Bell Technology Resources, Inc. Out-of-band loopback control scheme
US5528625A (en) * 1994-01-03 1996-06-18 At&T Corp. High speed quantization-level-sampling modem with equalization arrangement
US5577105A (en) * 1994-03-11 1996-11-19 U.S. Robotics, Inc. Telephone call routing and switching techniques for data communications
US5724939A (en) * 1996-09-05 1998-03-10 Caterpillar Inc. Exhaust pulse boosted engine compression braking method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999037051A3 (en) * 1998-01-20 2000-08-24 Conexant Systems Inc Method and apparatus for synchronizing a data communication system to a periodic digital impairment

Also Published As

Publication number Publication date
EP0929958A1 (en) 1999-07-21
US5761247A (en) 1998-06-02
WO1998008327A1 (en) 1998-02-26
DE69733692T2 (de) 2006-05-04
EP0929958A4 (en) 2003-06-04
EP0929958B1 (en) 2005-07-06
US5995558A (en) 1999-11-30
DE69733692D1 (de) 2005-08-11

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