IL119376A0 - Apparatus for high-speed simultaneous voice/data communications - Google Patents

Apparatus for high-speed simultaneous voice/data communications

Info

Publication number
IL119376A0
IL119376A0 IL11937696A IL11937696A IL119376A0 IL 119376 A0 IL119376 A0 IL 119376A0 IL 11937696 A IL11937696 A IL 11937696A IL 11937696 A IL11937696 A IL 11937696A IL 119376 A0 IL119376 A0 IL 119376A0
Authority
IL
Israel
Prior art keywords
data communications
simultaneous voice
speed simultaneous
speed
voice
Prior art date
Application number
IL11937696A
Other languages
English (en)
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
Publication of IL119376A0 publication Critical patent/IL119376A0/xx

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
    • H04L25/497—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 by correlative coding, e.g. partial response coding or echo modulation coding transmitters and receivers for partial response systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03057—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a recursive structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
    • H04L27/3411—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power reducing the peak to average power ratio or the mean power of the constellation; Arrangements for increasing the shape gain of a signal set
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/345—Modifications of the signal space to allow the transmission of additional information
    • H04L27/3461—Modifications of the signal space to allow the transmission of additional information in order to transmit a subchannel
    • H04L27/3483—Modifications of the signal space to allow the transmission of additional information in order to transmit a subchannel using a modulation of the constellation points

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Telephonic Communication Services (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
IL11937696A 1995-10-10 1996-10-08 Apparatus for high-speed simultaneous voice/data communications IL119376A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/541,863 US5878077A (en) 1995-10-10 1995-10-10 Apparatus for high-speed simultaneous voice/data communications

Publications (1)

Publication Number Publication Date
IL119376A0 true IL119376A0 (en) 1997-01-10

Family

ID=24161409

Family Applications (1)

Application Number Title Priority Date Filing Date
IL11937696A IL119376A0 (en) 1995-10-10 1996-10-08 Apparatus for high-speed simultaneous voice/data communications

Country Status (6)

Country Link
US (1) US5878077A (xx)
EP (1) EP0768781A3 (xx)
JP (1) JPH09200283A (xx)
KR (1) KR970024705A (xx)
CA (1) CA2184530A1 (xx)
IL (1) IL119376A0 (xx)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7130338B2 (en) * 1996-12-17 2006-10-31 Paradyne Corporation Apparatus and method for communicating voice and data between a customer premises and a central office
US6128334A (en) * 1997-02-21 2000-10-03 Usa Digital Radio, Inc. Receiver addressable AM compatible digital broadcast system
US6084915A (en) * 1997-03-03 2000-07-04 3Com Corporation Signaling method having mixed-base shell map indices
US6307893B1 (en) * 1997-03-05 2001-10-23 Paradyne Corporation System and method for transmit signal spectral shaping
US6301683B1 (en) 1997-06-09 2001-10-09 Vocal Technologies, Ltd. Trellis encoding technique for PCM modems
KR100495149B1 (ko) * 1997-12-30 2005-09-15 엘지전자 주식회사 케이블모뎀용비선형등화장치및그방법
US6343101B1 (en) * 1998-01-16 2002-01-29 Ess Technology, Inc. Frame-based sign inversion method and system for spectral shaping for pulse-coded-modulation modems
US7292648B1 (en) * 1999-12-09 2007-11-06 Agere Systems Inc. Precoding for a non-linear codec
US6798851B1 (en) * 1999-12-09 2004-09-28 Agere Systems Inc. Decoding for a non-linear codec
US6715124B1 (en) * 2000-02-14 2004-03-30 Paradyne Corporation Trellis interleaver and feedback precoder
US7065151B2 (en) * 2000-12-21 2006-06-20 Agere Systems Inc. Channel optimization system
US7130288B2 (en) * 2001-01-24 2006-10-31 Qualcomm Incorporated Method for power control for mixed voice and data transmission
US7817745B2 (en) * 2005-06-02 2010-10-19 Adaptive Spectrum And Signal Alignment, Inc. Tonal precoding
CN106936454A (zh) * 2017-03-10 2017-07-07 成都金广通科技有限公司 新型产权测绘装置

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2012914C (en) * 1989-05-12 1999-05-04 Vedat M. Eyuboglu Trellis precoding for modulation systems
US5095497A (en) * 1989-10-02 1992-03-10 At & T Bell Laboratories Technique for achieving the full coding gain of encoded digital signals
US5394440A (en) * 1991-02-06 1995-02-28 General Datacomm, Inc. High speed modem systems incorporating distribution preserving Tomlinson encoding and decoding for secondary channels
TW211095B (xx) * 1991-12-11 1993-08-11 Philips Nv
DE69332849T2 (de) * 1992-01-14 2003-12-18 Fujitsu Ltd., Kawasaki Gleichzeitige Übertragung von Daten und analogen Sprachbandsignalen
US5388124A (en) * 1992-06-12 1995-02-07 University Of Maryland Precoding scheme for transmitting data using optimally-shaped constellations over intersymbol-interference channels
US5448555A (en) * 1993-06-14 1995-09-05 At&T Corp. Simultaneous analog and digital communication
US5440585A (en) * 1993-06-14 1995-08-08 At&T Corp. Applications of simultaneous analog and digital communication
US5537436A (en) * 1993-06-14 1996-07-16 At&T Corp. Simultaneous analog and digital communication applications
US5537441A (en) * 1993-06-14 1996-07-16 At&T Corp. Controlled simultaneous analog and digital communication
US5488633A (en) * 1993-06-14 1996-01-30 At&T Corp. Intersymbol interference channel coding scheme
US5521942A (en) * 1993-06-14 1996-05-28 At&T Corp. Method for increasing the dynamic range of a signal in a simultaneous voice and data system by the use of overlapping signal point regions and trellis coding
US5559791A (en) * 1993-06-14 1996-09-24 Lucent Technologies Inc. Companding of voice signal for simultaneous voice and data transmission
US5475713A (en) * 1993-06-14 1995-12-12 At&T Corp. Shaped signal spaces in a simultaneous voice and data system
US5436930A (en) * 1993-06-14 1995-07-25 At&T Corp. Simultaneous analog and digital communications with a selection of different signal point constellations based on signal energy
US5446758A (en) * 1993-07-08 1995-08-29 Motorola, Inc. Device and method for precoding
CA2124376A1 (en) * 1993-07-16 1995-01-17 William Lewis Betts Method and apparatus for encoding data for transfer over a communication channel
US5386590A (en) * 1993-07-28 1995-01-31 Celeritas Technologies, Ltd. Apparatus and method for increasing data transmission rate over wireless communication systems using spectral shaping
US5396519A (en) * 1993-10-22 1995-03-07 At&T Corp. Method and apparatus for adaptively providing precoding and preemphasis conditioning to signal data for transfer over a communication channel
US5506866A (en) * 1993-11-15 1996-04-09 At&T Corp. Side-channel communications in simultaneous voice and data transmission
US5559792A (en) * 1994-04-20 1996-09-24 Lucent Technologies Inc. Sound modification for use in simultaneous voice and data communications
US5465273A (en) * 1994-04-20 1995-11-07 General Datacomm, Inc. Modem utilizing parity and convolutional encoder feedback

Also Published As

Publication number Publication date
EP0768781A2 (en) 1997-04-16
JPH09200283A (ja) 1997-07-31
US5878077A (en) 1999-03-02
EP0768781A3 (en) 1997-05-02
CA2184530A1 (en) 1997-04-11
KR970024705A (ko) 1997-05-30
MX9604492A (es) 1997-07-31

Similar Documents

Publication Publication Date Title
EP0724355A3 (en) Data communication device
IL121643A (en) Apparatus and method for concurrent voice and data transmission
GB2308254B (en) Optical communication apparatus and method
IL113042A0 (en) Method and apparatus for data communications using simultaneous voice and data modem
EP0740455A3 (en) Data transmission device and method
KR0135725B1 (en) Voice image simultaneous communication apparatus
AU5562696A (en) Communications method and apparatus for digital information
IL117449A0 (en) Method and apparatus for assigning communications channels
SG82581A1 (en) Communications apparatus
AU4501996A (en) System for providing simultaneous data and voice communication
IL114221A0 (en) Simultaneous voice/data answering machine
PL323251A1 (en) Apparatus for provodong simultaneous communication at many transmision rates
IL119674A0 (en) Method and apparatus for simultaneous voice/data transmission
AU128169S (en) Telecommunication apparatus
GB2313987B (en) Apparatus and method for serial data communications
IL119376A0 (en) Apparatus for high-speed simultaneous voice/data communications
GB9625709D0 (en) Communication apparatus
IL110002A0 (en) Method and apparatus for simultaneous voice and data transmission
AU7452696A (en) Methods and apparatus for implementing high speed data communications
GB2303519B (en) Data communication apparatus and method
AU5155496A (en) Data communication method and apparatus
AU7238991A (en) Apparatus and method for data communication
AU126376S (en) Telecommunication apparatus
ZA969434B (en) Communication apparatus
EP0762725A3 (en) Data transmission device