GB2080076B - Improvements in or relating to timing circuits for pcm reception - Google Patents

Improvements in or relating to timing circuits for pcm reception

Info

Publication number
GB2080076B
GB2080076B GB8120098A GB8120098A GB2080076B GB 2080076 B GB2080076 B GB 2080076B GB 8120098 A GB8120098 A GB 8120098A GB 8120098 A GB8120098 A GB 8120098A GB 2080076 B GB2080076 B GB 2080076B
Authority
GB
United Kingdom
Prior art keywords
relating
timing circuits
pcm reception
pcm
reception
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
GB8120098A
Other languages
English (en)
Other versions
GB2080076A (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.)
Italtel SpA
Original Assignee
Italtel SpA
Italtel Societa Italiana Telecomunicazioni SpA
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 Italtel SpA, Italtel Societa Italiana Telecomunicazioni SpA filed Critical Italtel SpA
Publication of GB2080076A publication Critical patent/GB2080076A/en
Application granted granted Critical
Publication of GB2080076B publication Critical patent/GB2080076B/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
    • H04L7/0079—Receiver details
    • H04L7/0083—Receiver details taking measures against momentary loss of synchronisation, e.g. inhibiting the synchronisation, using idle words or using redundant clocks
    • 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
    • H04J3/0605—Special codes used as synchronising signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
GB8120098A 1980-06-30 1981-06-30 Improvements in or relating to timing circuits for pcm reception Expired GB2080076B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT23104/80A IT1151019B (it) 1980-06-30 1980-06-30 Circuito di temporizzazione per la ricezione di segnali pcm

Publications (2)

Publication Number Publication Date
GB2080076A GB2080076A (en) 1982-01-27
GB2080076B true GB2080076B (en) 1984-05-31

Family

ID=11203820

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8120098A Expired GB2080076B (en) 1980-06-30 1981-06-30 Improvements in or relating to timing circuits for pcm reception

Country Status (6)

Country Link
US (1) US4394758A (enExample)
BR (1) BR8103929A (enExample)
DE (1) DE3125723C2 (enExample)
FR (1) FR2488466A1 (enExample)
GB (1) GB2080076B (enExample)
IT (1) IT1151019B (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3212450A1 (de) * 1982-04-02 1983-10-13 Siemens AG, 1000 Berlin und 8000 München Synchronisiereinrichtung einer digitalsignal-demultiplexeinrichung
DE3215975C1 (en) * 1982-04-29 1990-12-20 Siemens Ag Multi-channel directional ratio system - combines available channels on transmitting side in digital form in time-multiplexing framework
FR2657741B1 (fr) * 1990-01-29 1992-04-03 Cit Alcatel Interface de restructuration de trames pour trains numeriques multiplexes par multiplexage temporel d'affluents numeriques a differents debits.
US5251210A (en) * 1991-11-01 1993-10-05 Ibm Corporation Method and apparatus for transforming low bandwidth telecommunications channels into a high bandwidth telecommunication channel
US5539783A (en) * 1995-05-18 1996-07-23 Hazeltine Corporation Non-coherent synchronization signal detector
US6647028B1 (en) 1997-09-30 2003-11-11 Cisco Technology, Inc. System and method for recovering and restoring lost data in a N-channel coherent data transmission system

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB974742A (en) * 1960-02-12 1964-11-11 Nippon Electric Co A synchronising system for a time division multiplex code modulation system
FR2291654A1 (fr) * 1974-11-14 1976-06-11 Trt Telecom Radio Electr Systeme de transmission multiplex
FR2296973A1 (fr) * 1974-12-31 1976-07-30 Telecommunications Sa Systeme de transmission numerique permettant le transfert de voies composantes entre voies multiplexees
IT1037256B (it) * 1975-04-14 1979-11-10 Sits Soc It Telecom Siemens Rete di transito per sistemi di telecomunicazioni a divisione di tempo
FR2320023A1 (fr) * 1975-07-28 1977-02-25 Constr Telephoniques Procede et dispositif de resynchronisation d'informations entrantes structurees en trames
CH621445A5 (enExample) * 1976-09-09 1981-01-30 Gretag Ag
US4095051A (en) * 1976-12-15 1978-06-13 Bell Telephone Laboratories, Incorporated Demultiplexer circuit
US4133978A (en) * 1977-08-25 1979-01-09 General Electric Company Circuit for separating a composite stream of data and clock pulses
NL176420C (nl) * 1977-09-29 1985-04-01 Nederlanden Staat Synchronisatieinrichting voor het afgeven van een met een in een inkomend digitaal signaal aanwezig synchronisatieteken overeenkomend synchronisatiesignaal.
DE2900970C3 (de) * 1977-11-24 1982-04-08 Siemens AG, 1000 Berlin und 8000 München Prüfsignalgenerator
US4224473A (en) * 1978-05-31 1980-09-23 Digital Communications Corporation TDMA Multiplexer-demultiplexer with multiple ports
CH643696A5 (en) * 1979-02-08 1984-06-15 Siemens Ag Albis Synchronisation device for a PCM system
DE2936938C2 (de) * 1979-09-12 1987-01-08 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zum Ausgleich der Phasenunterschiede zwischen dem Streckentakt auf einer mit einer PCM-Vermittlungsstelle verbindenden PCM-Zeitmultiplexleitung und dem Amtstakt dieser Vermittlungsstelle
IT1207258B (it) * 1979-10-11 1989-05-17 Sits Soc It Telecom Siemens Disposizione circuitale atta a riconoscere la parola di allineamento, di particolare applicazione nella sezione ricevente di un multiplatore disegnali digitali.

Also Published As

Publication number Publication date
FR2488466A1 (fr) 1982-02-12
DE3125723A1 (de) 1982-03-11
DE3125723C2 (de) 1987-02-12
IT1151019B (it) 1986-12-17
US4394758A (en) 1983-07-19
GB2080076A (en) 1982-01-27
FR2488466B1 (enExample) 1984-04-20
BR8103929A (pt) 1982-03-09
IT8023104A0 (it) 1980-06-30

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Legal Events

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

Effective date: 19920630