FR2517908B1 - - Google Patents

Info

Publication number
FR2517908B1
FR2517908B1 FR8122644A FR8122644A FR2517908B1 FR 2517908 B1 FR2517908 B1 FR 2517908B1 FR 8122644 A FR8122644 A FR 8122644A FR 8122644 A FR8122644 A FR 8122644A FR 2517908 B1 FR2517908 B1 FR 2517908B1
Authority
FR
France
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
FR8122644A
Other languages
French (fr)
Other versions
FR2517908A1 (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.)
ALE International SAS
Original Assignee
Telic Alcatel SA
La Telephone Industrielle et Commerciale Telic Alcatel SA
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 Telic Alcatel SA, La Telephone Industrielle et Commerciale Telic Alcatel SA filed Critical Telic Alcatel SA
Priority to FR8122644A priority Critical patent/FR2517908A1/en
Publication of FR2517908A1 publication Critical patent/FR2517908A1/en
Application granted granted Critical
Publication of FR2517908B1 publication Critical patent/FR2517908B1/fr
Granted 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
    • H04L7/0054—Detection of the synchronisation error by features other than the received signal transition
    • H04L7/0066—Detection of the synchronisation error by features other than the received signal transition detection of error based on transmission code rule
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0602—Systems characterised by the synchronising information used
    • H04J3/0614—Systems characterised by the synchronising information used the synchronising signal being characterised by the amplitude, duration or polarity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation
    • H04L1/245—Testing correct operation by using the properties of transmission codes
    • H04L1/247—Testing correct operation by using the properties of transmission codes three-level transmission codes, e.g. ternary
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/027—Speed or phase control by the received code signals, the signals containing no special synchronisation information extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit
    • 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
    • H04L7/10—Arrangements for initial synchronisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
FR8122644A 1981-12-03 1981-12-03 TDM data transmission system e.g. for telephone - uses violation of polarity sequence to send synchronisation signals upon recognition of successive identical polarisations Granted FR2517908A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8122644A FR2517908A1 (en) 1981-12-03 1981-12-03 TDM data transmission system e.g. for telephone - uses violation of polarity sequence to send synchronisation signals upon recognition of successive identical polarisations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8122644A FR2517908A1 (en) 1981-12-03 1981-12-03 TDM data transmission system e.g. for telephone - uses violation of polarity sequence to send synchronisation signals upon recognition of successive identical polarisations

Publications (2)

Publication Number Publication Date
FR2517908A1 FR2517908A1 (en) 1983-06-10
FR2517908B1 true FR2517908B1 (en) 1984-01-20

Family

ID=9264635

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8122644A Granted FR2517908A1 (en) 1981-12-03 1981-12-03 TDM data transmission system e.g. for telephone - uses violation of polarity sequence to send synchronisation signals upon recognition of successive identical polarisations

Country Status (1)

Country Link
FR (1) FR2517908A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1284361C (en) * 1986-08-29 1991-05-21 Mitel Corporation Analog phase locked loop
FR2620291B1 (en) * 1987-09-09 1989-11-24 Telephonie Ind Commerciale PROTECTION AND REMOTE POWERING SYSTEM AND DEVICE FOR EQUIPMENT CONNECTED BY TWO TRANSFORMERS TO A FOUR-WIRE TRANSMISSION LINK

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3745361A (en) * 1972-06-27 1973-07-10 Bell Telephone Labor Inc Composite clock signal generating and distributing circuits
US3787613A (en) * 1972-06-27 1974-01-22 Bell Telephone Labor Inc Pulse transmission system for conveying data and control words by means of alternating polarity pulses and violations thereof

Also Published As

Publication number Publication date
FR2517908A1 (en) 1983-06-10

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Legal Events

Date Code Title Description
ST Notification of lapse