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GB1549654A - Method and apparatus for transmission by a modem of a synchronisation signal used for the time demultiplexing of information transmitted by the said modem - Google Patents

Method and apparatus for transmission by a modem of a synchronisation signal used for the time demultiplexing of information transmitted by the said modem

Info

Publication number
GB1549654A
GB1549654A GB1830976A GB1830976A GB1549654A GB 1549654 A GB1549654 A GB 1549654A GB 1830976 A GB1830976 A GB 1830976A GB 1830976 A GB1830976 A GB 1830976A GB 1549654 A GB1549654 A GB 1549654A
Authority
GB
United Kingdom
Prior art keywords
modem
transmission
information transmitted
signal used
synchronisation signal
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
GB1830976A
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.)
Societe Anonyme de Telecommunications SAT
Original Assignee
Societe Anonyme de Telecommunications SAT
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 Societe Anonyme de Telecommunications SAT filed Critical Societe Anonyme de Telecommunications SAT
Publication of GB1549654A publication Critical patent/GB1549654A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/06—Speed or phase control by synchronisation signals the synchronisation signals differing from the information signals in amplitude, polarity or frequency or length
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Dc Digital Transmission (AREA)
GB1830976A 1975-05-05 1976-05-05 Method and apparatus for transmission by a modem of a synchronisation signal used for the time demultiplexing of information transmitted by the said modem Expired GB1549654A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7513973A FR2310666A1 (en) 1975-05-05 1975-05-05 METHOD AND DEVICE FOR TRANSMISSION BY MODEM OF A SYNCHRONIZATION SIGNAL USED FOR THE TEMPORAL DEMULTIPLEXING OF THE INFORMATION TRANSMITTED BY THE LEDIT MODEM

Publications (1)

Publication Number Publication Date
GB1549654A true GB1549654A (en) 1979-08-08

Family

ID=9154839

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1830976A Expired GB1549654A (en) 1975-05-05 1976-05-05 Method and apparatus for transmission by a modem of a synchronisation signal used for the time demultiplexing of information transmitted by the said modem

Country Status (4)

Country Link
BR (1) BR7602705A (en)
DE (1) DE2619146C3 (en)
FR (1) FR2310666A1 (en)
GB (1) GB1549654A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5834002B2 (en) * 1979-10-17 1983-07-23 日立電子株式会社 Magnetic recording and reproducing method for digital signals
EP0061764B1 (en) * 1981-03-30 1985-01-16 Nec Corporation Transmission system of a class iv partial response code

Also Published As

Publication number Publication date
FR2310666A1 (en) 1976-12-03
BR7602705A (en) 1976-11-09
DE2619146A1 (en) 1976-11-18
FR2310666B1 (en) 1980-05-09
DE2619146B2 (en) 1977-12-22
DE2619146C3 (en) 1978-08-31

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee