CA1106065A - Data transmission systems - Google Patents

Data transmission systems

Info

Publication number
CA1106065A
CA1106065A CA263,495A CA263495A CA1106065A CA 1106065 A CA1106065 A CA 1106065A CA 263495 A CA263495 A CA 263495A CA 1106065 A CA1106065 A CA 1106065A
Authority
CA
Canada
Prior art keywords
significance
bit
output signal
bit stream
bits
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA263,495A
Other languages
English (en)
French (fr)
Inventor
George A. Howells
Donald A. Weir
Eric S. Usher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
International Standard Electric 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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of CA1106065A publication Critical patent/CA1106065A/en
Expired legal-status Critical Current

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
    • H04L25/4923—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 ternary codes
    • H04L25/4925—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 ternary codes using balanced bipolar ternary codes
    • 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
    • H04L25/45—Transmitting circuits; Receiving circuits using electronic distributors
    • 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
    • H04L25/4923—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 ternary codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Dc Digital Transmission (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
CA263,495A 1975-10-23 1976-10-15 Data transmission systems Expired CA1106065A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB43564/75A GB1512700A (en) 1975-10-23 1975-10-23 Data transmission
GB43564/75 1975-10-23

Publications (1)

Publication Number Publication Date
CA1106065A true CA1106065A (en) 1981-07-28

Family

ID=10429318

Family Applications (1)

Application Number Title Priority Date Filing Date
CA263,495A Expired CA1106065A (en) 1975-10-23 1976-10-15 Data transmission systems

Country Status (5)

Country Link
US (1) US4071692A (index.php)
BE (1) BE847523A (index.php)
CA (1) CA1106065A (index.php)
FR (1) FR2329109A1 (index.php)
GB (1) GB1512700A (index.php)

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2407617A1 (fr) * 1977-10-28 1979-05-25 Telecommunications Sa Procede pour recevoir des jonctions codirectionnelles a 64 kbit/s et son dispositif de mise en oeuvre
GB1566223A (en) * 1978-01-17 1980-04-30 Standard Telephones Cables Ltd Digital duplex transmission system
JPS5814104B2 (ja) * 1978-04-28 1983-03-17 株式会社東芝 情報伝送方式
FR2438943A1 (fr) * 1978-10-09 1980-05-09 Ibm France Procede de transmission de donnees et dispositif de mise en oeuvre dudit procede
FR2446570A1 (fr) * 1979-01-09 1980-08-08 Telecommunications Sa Procede et dispositif permettant la transmission simultanee d'un signal numerique et d'une onde basse frequence
US4267595A (en) * 1980-02-04 1981-05-12 International Telephone And Telegraph Corporation AMI Decoder apparatus
DE3105120A1 (de) * 1980-07-22 1982-02-25 Siemens AG, 1000 Berlin und 8000 München Regenerator mit coderegel-verletzungspruefer
US4363127A (en) * 1981-01-12 1982-12-07 Ford Aerospace & Communications Corporation Line signaling apparatus and techniques for digital data links
DE3267979D1 (en) * 1981-04-27 1986-01-30 Sumitomo Electric Industries A method of and a system for pulse communication
JPS57210748A (en) * 1981-06-19 1982-12-24 Hitachi Ltd Data transmission system
JPS58161554A (ja) * 1982-03-19 1983-09-26 Hitachi Ltd パルス信号伝送システム
DE3224442A1 (de) * 1982-06-30 1984-01-05 Siemens AG, 1000 Berlin und 8000 München Anordnung zur erzeugung von quasizufallsfolgen im ami-code
US4486740A (en) * 1982-12-06 1984-12-04 At&T Bell Laboratories DC Cancellation in ternary-coded data systems
WO1984003404A1 (fr) * 1983-02-28 1984-08-30 Mitsubishi Electric Corp Systeme de transfert d'un signal mic
DE3335564A1 (de) * 1983-09-30 1985-04-18 Siemens AG, 1000 Berlin und 8000 München Uebertragungssystem zur uebertragung ami-codierter signale
US4584690A (en) * 1984-05-07 1986-04-22 D.A.V.I.D. Systems, Inc. Alternate Mark Invert (AMI) transceiver with switchable detection and digital precompensation
NL8403366A (nl) * 1984-11-06 1986-06-02 Philips Nv Inrichting voor het bewaken van een cmi-codeomvormer.
FR2606232B1 (fr) * 1986-10-31 1988-12-02 Neiman Sa Procede de codage evolutif de haute securite et dispositif de mise en oeuvre de ce procede
JP2550985B2 (ja) * 1987-04-21 1996-11-06 日本電気株式会社 Ｃｍｉ符号復号器
DE3721805A1 (de) * 1987-07-02 1989-01-12 Telefonbau & Normalzeit Gmbh Verfahren zur uebertragung schmalbandiger daten in einem digitalen breitbandkanal
US4817148A (en) * 1987-07-06 1989-03-28 Wegener Communications, Inc. Signal scrambling transmission system
US4862478A (en) * 1987-11-06 1989-08-29 Gambatte, Inc. Spread spectrum communications with resistance to multipath at differential delays both larger and smaller than a chip width
GB2220824A (en) * 1988-07-13 1990-01-17 Philips Electronic Associated Transmission system for sending two signals simultaneously on the same communications channel
DE3835338A1 (de) * 1988-10-17 1990-04-19 Siemens Ag Verfahren zur uebertragung von zusatzsignalen bei digitaler datenuebertragung
US5086435A (en) * 1988-10-17 1992-02-04 Rockwell International Corporation Method and apparatus for detecting signals on digital data systems
US4952070A (en) * 1988-10-17 1990-08-28 Rockwell International Corporation Digital data coding technique
JP2675890B2 (ja) * 1990-03-06 1997-11-12 キヤノン株式会社 スペクトラム拡散通信装置
US5249186A (en) * 1991-01-16 1993-09-28 Rolm Company Apparatus for detecting the start of frame in bipolar transmission systems
EP0548415B1 (en) * 1991-12-24 1998-02-18 Alcatel Data transmission method wherein a plurality of coding laws is used for transmission of a main and an auxiliary bitstream
EP0589217A1 (en) * 1992-09-24 1994-03-30 Siemens Stromberg-Carlson Serial line synchronization method and apparatus
BE1006904A3 (fr) * 1993-03-02 1995-01-24 Lukac Kuruc Eric Procede pour la transmission d'informations sur un support electrique.
US5742135A (en) * 1996-06-28 1998-04-21 Tandem Computers Incorporated System for maintaining polarity synchronization during AMI data transfer
US5970100A (en) * 1996-11-15 1999-10-19 Conexant Systems, Inc. System for controlling and shaping the spectrum and redundancy of signal-point limited transmission
US6192087B1 (en) * 1996-11-15 2001-02-20 Conexant Systems, Inc. Method and apparatus for spectral shaping in signal-point limited transmission systems
US6278744B1 (en) * 1996-11-15 2001-08-21 Conexant Systems, Inc. System for controlling and shaping the spectrum and redundancy of signal-point limited transmission
DE19652187A1 (de) 1996-12-14 1998-06-18 Asea Brown Boveri Verfahren zum Übertragen von digitalisierten Nutzdaten und Signalisierungsdaten über einen Kanal
US6973188B1 (en) * 2002-02-25 2005-12-06 Lockheed Martin Corporation Analog scrambler
WO2003096604A1 (en) * 2002-05-06 2003-11-20 Paradyne Corporation Communication device and method for using non-self-synchronizing scrambling in a communication system
US7515646B2 (en) * 2004-02-05 2009-04-07 Lexmark International, Inc. Method and apparatus for reducing EMI emissions for data signals traveling over a data pathway
US7809143B2 (en) * 2005-10-24 2010-10-05 Magiq Technologies, Inc. QKD system with synchronization channel verification
US7835524B2 (en) * 2006-02-08 2010-11-16 Panasonic Corporation Encrypting of communications using a transmitting/receiving apparatus via key information based on a multi-level code signal and a pseudo-random number sequence for modulation with an information signal
JP4684185B2 (ja) * 2006-08-15 2011-05-18 富士通株式会社 通信システム

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3048819A (en) * 1960-12-05 1962-08-07 Bell Telephone Labor Inc Detection and measurement of errors in pulse code trains
US3303424A (en) * 1963-07-03 1967-02-07 Ibm Asynchronous data system transmitting before each data pulse a pulse of opposite polarity
US3502810A (en) * 1966-08-15 1970-03-24 Bell Telephone Labor Inc Bipolar pulse transmission system with self-derived timing and drift compensation
US3713025A (en) * 1969-12-04 1973-01-23 Avco Corp Phase slip corrector means and method for synchronization of pseudorandom generating means in multistation networks
FR2139665B1 (index.php) * 1971-05-28 1973-05-25 Labo Cent Telecommunicat
US3931472A (en) * 1972-02-14 1976-01-06 Avantek, Inc. Asynchronous quadriphase communications system and method
US3745361A (en) * 1972-06-27 1973-07-10 Bell Telephone Labor Inc Composite clock signal generating and distributing circuits
NL7310645A (en) * 1973-08-01 1975-02-04 Nederlanden Staat Coding of binary signals into ternary signals - permits illegal codes to economise on check bits

Also Published As

Publication number Publication date
US4071692A (en) 1978-01-31
FR2329109B1 (index.php) 1982-12-10
FR2329109A1 (fr) 1977-05-20
GB1512700A (en) 1978-06-01
BE847523A (nl) 1977-04-22

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Legal Events

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