GB2014401B - Data communication system - Google Patents

Data communication system

Info

Publication number
GB2014401B
GB2014401B GB7901720A GB7901720A GB2014401B GB 2014401 B GB2014401 B GB 2014401B GB 7901720 A GB7901720 A GB 7901720A GB 7901720 A GB7901720 A GB 7901720A GB 2014401 B GB2014401 B GB 2014401B
Authority
GB
United Kingdom
Prior art keywords
communication system
data communication
data
communication
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
GB7901720A
Other versions
GB2014401A (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 GB2014401A publication Critical patent/GB2014401A/en
Application granted granted Critical
Publication of GB2014401B publication Critical patent/GB2014401B/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

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Communication Control (AREA)
GB7901720A 1978-01-20 1979-01-17 Data communication system Expired GB2014401B (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
GB2014401A GB2014401A (en) 1979-08-22
GB2014401B true GB2014401B (en) 1982-03-31

Family

ID=26338106

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7901720A Expired GB2014401B (en) 1978-01-20 1979-01-17 Data communication system

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

Family Cites Families (5)

* 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
US3502810A (en) * 1966-08-15 1970-03-24 Bell Telephone Labor Inc Bipolar pulse transmission system with self-derived timing and drift compensation
GB1250492A (en) * 1967-07-27 1971-10-20
US3863025A (en) * 1973-04-25 1975-01-28 Gte Automatic Electric Lab Inc Data transmission method

Also Published As

Publication number Publication date
DE2902133C3 (en) 1981-07-30
DE2902133A1 (en) 1979-07-26
GB2014401A (en) 1979-08-22
DE2902133B2 (en) 1980-10-02
FR2423016B1 (en) 1983-04-29
SE7813424L (en) 1979-07-21
FR2423016A1 (en) 1979-11-09

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 19990116