TW245869B - - Google Patents

Info

Publication number
TW245869B
TW245869B TW083107167A TW83107167A TW245869B TW 245869 B TW245869 B TW 245869B TW 083107167 A TW083107167 A TW 083107167A TW 83107167 A TW83107167 A TW 83107167A TW 245869 B TW245869 B TW 245869B
Authority
TW
Taiwan
Application number
TW083107167A
Original Assignee
At & T Corp
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 At & T Corp filed Critical At & T Corp
Application granted granted Critical
Publication of TW245869B publication Critical patent/TW245869B/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/35—Unequal or adaptive error protection, e.g. by providing a different level of protection according to significance of source information or by adapting the coding according to the change of transmission channel characteristics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Theoretical Computer Science (AREA)
  • Telephonic Communication Services (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
TW083107167A 1993-06-14 1994-08-04 TW245869B (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7652593A 1993-06-14 1993-06-14

Publications (1)

Publication Number Publication Date
TW245869B true TW245869B (zh) 1995-04-21

Family

ID=22132570

Family Applications (1)

Application Number Title Priority Date Filing Date
TW083107167A TW245869B (zh) 1993-06-14 1994-08-04

Country Status (8)

Country Link
US (1) US5671250A (zh)
EP (1) EP0630128A3 (zh)
JP (1) JPH0750653A (zh)
KR (1) KR950002306A (zh)
CN (1) CN1111861A (zh)
CA (1) CA2125511A1 (zh)
IL (1) IL110004A (zh)
TW (1) TW245869B (zh)

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US5684834A (en) * 1993-06-14 1997-11-04 Paradyne Corporation Simultaneous analog and digital communication using fractional rate encoding
US6064693A (en) * 1997-02-28 2000-05-16 Data Race, Inc. System and method for handling underrun of compressed speech frames due to unsynchronized receive and transmit clock rates
US6647058B1 (en) * 1997-06-23 2003-11-11 Paradyne Corporation Performance customization system and process for optimizing XDSL performance
US9432172B2 (en) 1997-12-05 2016-08-30 Rembrandt Wireless Technologies, Lp System and method of communication using at least two modulation methods
US7248626B2 (en) 1997-12-05 2007-07-24 Paradyne Corporation System and method of communication via embedded modulation
US7076003B1 (en) * 1999-03-03 2006-07-11 Agere Systems Inc. Constellation design for modem receiver
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
US6661847B1 (en) 1999-05-20 2003-12-09 International Business Machines Corporation Systems methods and computer program products for generating and optimizing signal constellations
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
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
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
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
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
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
US6792040B1 (en) 1999-10-29 2004-09-14 International Business Machines Corporation Modems having a dual power mode capability and methods of operating same
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
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
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
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
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
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
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
US6418160B1 (en) 2000-03-29 2002-07-09 Sbc Technology Resources, Inc. Method for testing a communication channel
US20020114382A1 (en) * 2000-11-29 2002-08-22 Dan Goren Parallel optimal data rate setting in a modem pool environment
DE10121912C2 (de) * 2001-05-05 2003-05-22 Phoenix Contact Gmbh & Co Verfahren zur zentralen Datenraten-Einstellung in einer Datenübertragungsanlage sowie Vorrichtung zur zentralen Datenraten-Einstellung
US20030003905A1 (en) * 2001-06-20 2003-01-02 Shvodian William M. System and method for providing signal quality feedback in a wireless network
US7146391B2 (en) * 2002-01-24 2006-12-05 Broadcom Corporation Method and system for implementing SLICE instructions
US7620154B2 (en) 2002-12-23 2009-11-17 Cambron G Keith Equivalent working length determinative system for digital subscriber line circuits
WO2005015814A1 (en) * 2003-08-06 2005-02-17 Aelis Photonics (Israel) Ltd. Signal quality monitoring method with signal averaging
US7453967B2 (en) * 2004-05-05 2008-11-18 Cisco Technology, Inc. Serial self-adaptable transmission line
KR100620382B1 (ko) * 2005-01-10 2006-09-11 삼성전자주식회사 통신장치 및 통신방법
TWI322945B (en) * 2006-09-18 2010-04-01 Quanta Comp Inc Audio data transmission system and audio data transmission method

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4512013A (en) * 1983-04-11 1985-04-16 At&T Bell Laboratories Simultaneous transmission of speech and data over an analog channel
US4630287A (en) * 1983-12-28 1986-12-16 Paradyne Corporation Secondary channel signalling in a QAM data point constellation
US4756007A (en) * 1984-03-08 1988-07-05 Codex Corporation Adaptive communication rate modem
US4757495A (en) * 1986-03-05 1988-07-12 Telebit Corporation Speech and data multiplexor optimized for use over impaired and bandwidth restricted analog channels
US4989221A (en) * 1987-03-30 1991-01-29 Codex Corporation Sample rate converter
US4891806A (en) * 1987-09-18 1990-01-02 Racal Data Communications Inc. Constellation multiplexed inband secondary channel for voiceband modem
DE3854231D1 (de) * 1988-04-29 1995-08-31 Ibm Bitratenadaptionssystem für digitale Übertragungssysteme.
US4956851A (en) * 1988-05-25 1990-09-11 Case Communications Inc. Modem with remote speed-change capability
US5007047A (en) * 1988-12-02 1991-04-09 Codex Corporation Adaptive rate control for echo cancelling modem
JPH0626343B2 (ja) * 1988-12-16 1994-04-06 日本電気株式会社 変復調装置のデータ伝送速度自動切替方式
US5081647A (en) * 1989-01-06 1992-01-14 American Telephone & Telegraph Company Communication of a voice signal via continuous quadrature amplitude modulator
US5297186A (en) * 1991-07-29 1994-03-22 Codex Corporation Device and method for on-line adaptive selection of baud rate and carrier frequency
US5199046A (en) * 1991-09-09 1993-03-30 Codex Corporation First and second digital rate converter synchronization device and method
DE69332849T2 (de) * 1992-01-14 2003-12-18 Fujitsu Ltd Gleichzeitige Übertragung von Daten und analogen Sprachbandsignalen
US5410599A (en) * 1992-05-15 1995-04-25 Tecsec, Incorporated Voice and data encryption device
US5475691A (en) * 1993-11-15 1995-12-12 At&T Corp. Voice activated date rate change in simultaneous voice and data transmission

Also Published As

Publication number Publication date
JPH0750653A (ja) 1995-02-21
IL110004A0 (en) 1994-10-07
CA2125511A1 (en) 1994-12-15
IL110004A (en) 1997-11-20
EP0630128A2 (en) 1994-12-21
EP0630128A3 (en) 1997-05-02
CN1111861A (zh) 1995-11-15
KR950002306A (ko) 1995-01-04
US5671250A (en) 1997-09-23

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