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FR2423016A1 - DATA COMMUNICATION METHOD AND APPARATUS - Google Patents

DATA COMMUNICATION METHOD AND APPARATUS

Info

Publication number
FR2423016A1
FR2423016A1 FR7901199A FR7901199A FR2423016A1 FR 2423016 A1 FR2423016 A1 FR 2423016A1 FR 7901199 A FR7901199 A FR 7901199A FR 7901199 A FR7901199 A FR 7901199A FR 2423016 A1 FR2423016 A1 FR 2423016A1
Authority
FR
France
Prior art keywords
value
data communication
logic
communication method
transmitted
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.)
Granted
Application number
FR7901199A
Other languages
French (fr)
Other versions
FR2423016B1 (en
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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
Priority claimed from JP53004357A external-priority patent/JPS5831136B2/en
Priority claimed from JP14237678A external-priority patent/JPS5568761A/en
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of FR2423016A1 publication Critical patent/FR2423016A1/en
Application granted granted Critical
Publication of FR2423016B1 publication Critical patent/FR2423016B1/fr
Granted 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

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Communication Control (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

Deux valeurs logiques d'un code de valeur 3 correspondent à << 1 >> et << 0 >> d'un code binaire. Quand la même valeur logique binaire arrive dans des digits successifs d'une information à transmettre, la valeur logique de valeur 3 correspondante et une troisième valeur logique sont transmises alternativement. Quand la valeur logique binaire différente arrive dans l'information de façon alternative, les valeurs logiques correspondantes de valeur 3 sont transmises alternativement.Two logical values of a value code 3 correspond to "1" and "0" of a binary code. When the same binary logic value arrives in successive digits of an item of information to be transmitted, the logic value of corresponding value 3 and a third logic value are transmitted alternately. When the different binary logic value arrives in the information alternately, the corresponding logic values of value 3 are transmitted alternately.

FR7901199A 1978-01-20 1979-01-18 DATA COMMUNICATION METHOD AND APPARATUS Granted FR2423016A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP53004357A JPS5831136B2 (en) 1978-01-20 1978-01-20 Digital signal transmission method
JP14237678A JPS5568761A (en) 1978-11-20 1978-11-20 Digital signal transmission system

Publications (2)

Publication Number Publication Date
FR2423016A1 true FR2423016A1 (en) 1979-11-09
FR2423016B1 FR2423016B1 (en) 1983-04-29

Family

ID=26338106

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7901199A Granted FR2423016A1 (en) 1978-01-20 1979-01-18 DATA COMMUNICATION METHOD AND APPARATUS

Country Status (4)

Country Link
DE (1) DE2902133C3 (en)
FR (1) FR2423016A1 (en)
GB (1) GB2014401B (en)
SE (1) SE7813424L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2109202A (en) * 1981-11-02 1983-05-25 Philips Electronic Associated Code generator
GB2183971B (en) * 1985-12-05 1989-10-04 Stc Plc Data transmission system
US7221711B2 (en) 2002-03-27 2007-05-22 Woodworth John R Multilevel data encoding and modulation technique

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2759047A (en) * 1950-12-27 1956-08-14 Bell Telephone Labor Inc Pulse transmission system and regenerative repeater therefor
GB830848A (en) * 1956-11-05 1960-03-23 Standard Telephones Cables Ltd Improvements relating to transmission or storage systems employing information in binary code form

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3502810A (en) * 1966-08-15 1970-03-24 Bell Telephone Labor Inc Bipolar pulse transmission system with self-derived timing and drift compensation
DE1762644B2 (en) * 1967-07-27 1971-03-18 Xerox Corp., Rochester, N.Y. (V.St.A,) PROCEDURES AND CIRCUIT ARRANGEMENTS FOR CONVERTING NON-SYNCHRONOUS BINARY DATA SIGNALS INTO NON-SYNCHRONOUS DATA SIGNALS WITH MULTIPLE LEVEL VALUES
US3863025A (en) * 1973-04-25 1975-01-28 Gte Automatic Electric Lab Inc Data transmission method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2759047A (en) * 1950-12-27 1956-08-14 Bell Telephone Labor Inc Pulse transmission system and regenerative repeater therefor
GB830848A (en) * 1956-11-05 1960-03-23 Standard Telephones Cables Ltd Improvements relating to transmission or storage systems employing information in binary code form

Also Published As

Publication number Publication date
FR2423016B1 (en) 1983-04-29
DE2902133C3 (en) 1981-07-30
DE2902133B2 (en) 1980-10-02
SE7813424L (en) 1979-07-21
GB2014401B (en) 1982-03-31
DE2902133A1 (en) 1979-07-26
GB2014401A (en) 1979-08-22

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