IL109997A - Controlled simultaneous analog and digital communication - Google Patents

Controlled simultaneous analog and digital communication

Info

Publication number
IL109997A
IL109997A IL10999794A IL10999794A IL109997A IL 109997 A IL109997 A IL 109997A IL 10999794 A IL10999794 A IL 10999794A IL 10999794 A IL10999794 A IL 10999794A IL 109997 A IL109997 A IL 109997A
Authority
IL
Israel
Prior art keywords
signal
analog
modem
signals
digital input
Prior art date
Application number
IL10999794A
Other languages
English (en)
Other versions
IL109997A0 (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 IL109997A0 publication Critical patent/IL109997A0/xx
Publication of IL109997A publication Critical patent/IL109997A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J7/00—Multiplex systems in which the amplitudes or durations of the signals in individual channels are characteristic of those channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0002—Modulated-carrier systems analog front ends; means for connecting modulators, demodulators or transceivers to a transmission line
    • 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)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Telephonic Communication Services (AREA)
  • Communication Control (AREA)
IL10999794A 1993-06-14 1994-06-13 Controlled simultaneous analog and digital communication IL109997A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/076,519 US5537441A (en) 1993-06-14 1993-06-14 Controlled simultaneous analog and digital communication

Publications (2)

Publication Number Publication Date
IL109997A0 IL109997A0 (en) 1994-10-07
IL109997A true IL109997A (en) 1996-10-31

Family

ID=22132529

Family Applications (1)

Application Number Title Priority Date Filing Date
IL10999794A IL109997A (en) 1993-06-14 1994-06-13 Controlled simultaneous analog and digital communication

Country Status (8)

Country Link
US (1) US5537441A (de)
EP (1) EP0630130A3 (de)
JP (1) JPH07147598A (de)
KR (1) KR950002309A (de)
CN (1) CN1101771A (de)
CA (1) CA2125053A1 (de)
FI (1) FI942783A7 (de)
IL (1) IL109997A (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3095414B2 (ja) * 1993-09-08 2000-10-03 パシフィック・コミュニケーション・サイエンシーズ・インコーポレイテッド 複数の動作モードを有する携帯通信およびデータ端末
US6298121B1 (en) * 1994-06-24 2001-10-02 Intel Corporation Method and apparatus for making a voice and/or data call over a single analog phone line using a multi-modal DCE
FR2730370B1 (fr) * 1995-02-07 1997-04-25 France Telecom Dispositif de reception de signaux numeriques a structure iterative, module et procede correspondants
US5878077A (en) * 1995-10-10 1999-03-02 Paradyne Corporation Apparatus for high-speed simultaneous voice/data communications
GB2307152B (en) * 1995-11-10 1999-04-07 Motorola Ltd Method and apparatus for enhanced communication capability while maintaining standard channel modulation compatibility
JP3140960B2 (ja) * 1996-04-05 2001-03-05 富士通株式会社 モデム信号送信装置及びモデム信号送信方法並びにモデム信号受信装置及びモデム信号受信方法並びにモデム信号送受信システム及びモデム信号送受信方法
US6141376A (en) * 1997-04-01 2000-10-31 Lsi Logic Corporation Single chip communication device that implements multiple simultaneous communication channels
US6154451A (en) * 1998-06-29 2000-11-28 Northrop Grumman Corporation Method for dissemination of multi-sensor products
US6201786B1 (en) * 1998-06-29 2001-03-13 Northrop Grumman Corporation Adaptable and controllable multi-channel data link
KR20000046243A (ko) * 1998-12-31 2000-07-25 서평원 다중 채널 단말기의 전송 속도 선택 장치 및 그 방법
US7110531B2 (en) * 2000-02-17 2006-09-19 Analog Devices, Inc. Isolation system with analog communication across an isolation barrier
US7505531B1 (en) 2000-03-17 2009-03-17 Bridgewave Communications, Inc. Signal communications system and method for noisy links
TW513882B (en) * 2000-06-13 2002-12-11 Moxa Technologies Co Ltd Switching device and switching method for transmission direction
KR100456701B1 (ko) * 2002-11-07 2004-11-10 삼성전자주식회사 다중 반송파 전송 시스템
US6937666B2 (en) * 2002-12-20 2005-08-30 Bridgewave Communications, Inc. Wideband digital radio with transmit modulation cancellation
US8731007B2 (en) * 2005-12-30 2014-05-20 Remec Broadband Wireless, Llc Digital microwave radio link with a variety of ports
US8711888B2 (en) * 2005-12-30 2014-04-29 Remec Broadband Wireless Llc Digital microwave radio link with adaptive data rate
US20140376418A1 (en) * 2013-06-25 2014-12-25 Raja Banerjea Enhanced modulator and demodulator

Family Cites Families (13)

* 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
US4546212A (en) * 1984-03-08 1985-10-08 Crowder, Inc. Data/voice adapter for telephone network
US4672602A (en) * 1984-11-02 1987-06-09 Itt Corporation Control and routing system
US4757495A (en) * 1986-03-05 1988-07-12 Telebit Corporation Speech and data multiplexor optimized for use over impaired and bandwidth restricted analog channels
US4891806A (en) * 1987-09-18 1990-01-02 Racal Data Communications Inc. Constellation multiplexed inband secondary channel for voiceband modem
CH675034A5 (de) * 1987-11-03 1990-08-15 Schurter Ag
US5081647A (en) * 1989-01-06 1992-01-14 American Telephone & Telegraph Company Communication of a voice signal via continuous quadrature amplitude modulator
US5151972A (en) * 1989-03-28 1992-09-29 Lynx Automation, Inc. Apparatus for automatically connecting terminal device to telephone lines
US4924516A (en) * 1989-05-23 1990-05-08 At&T Paradyne Method and system for a synchronized pseudo-random privacy modem
WO1991007044A1 (en) * 1989-10-31 1991-05-16 Intelligence Technology Corporation Data and voice transmission over a cellular telephone system
US5103227A (en) * 1990-09-26 1992-04-07 At&T Bell Laboratories Modulus converter for fractional rate encoding
US5243629A (en) * 1991-09-03 1993-09-07 At&T Bell Laboratories Multi-subcarrier modulation for hdtv transmission
DE69332849T2 (de) * 1992-01-14 2003-12-18 Fujitsu Ltd., Kawasaki Gleichzeitige Übertragung von Daten und analogen Sprachbandsignalen

Also Published As

Publication number Publication date
EP0630130A3 (de) 1997-05-02
FI942783A7 (fi) 1994-12-15
EP0630130A2 (de) 1994-12-21
KR950002309A (ko) 1995-01-04
IL109997A0 (en) 1994-10-07
CN1101771A (zh) 1995-04-19
JPH07147598A (ja) 1995-06-06
US5537441A (en) 1996-07-16
FI942783A0 (fi) 1994-06-13
CA2125053A1 (en) 1994-12-15

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