CA2095226A1 - Appareil pour engendrer un signal ds-3 a partir de la composante donnees d'un signal sts-1 - Google Patents

Appareil pour engendrer un signal ds-3 a partir de la composante donnees d'un signal sts-1

Info

Publication number
CA2095226A1
CA2095226A1 CA2095226A CA2095226A CA2095226A1 CA 2095226 A1 CA2095226 A1 CA 2095226A1 CA 2095226 A CA2095226 A CA 2095226A CA 2095226 A CA2095226 A CA 2095226A CA 2095226 A1 CA2095226 A1 CA 2095226A1
Authority
CA
Canada
Prior art keywords
signal
fifo
sts
measuring circuit
output clock
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
CA2095226A
Other languages
English (en)
Other versions
CA2095226C (fr
Inventor
Robert W. Hamlin, Jr.
Daniel C. Upp
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.)
Transwitch Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2095226A1 publication Critical patent/CA2095226A1/fr
Application granted granted Critical
Publication of CA2095226C publication Critical patent/CA2095226C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F5/00—Methods or arrangements for data conversion without changing the order or content of the data handled
    • G06F5/06—Methods or arrangements for data conversion without changing the order or content of the data handled for changing the speed of data flow, i.e. speed regularising or timing, e.g. delay lines, FIFO buffers; over- or underrun control therefor
    • G06F5/10—Methods or arrangements for data conversion without changing the order or content of the data handled for changing the speed of data flow, i.e. speed regularising or timing, e.g. delay lines, FIFO buffers; over- or underrun control therefor having a sequence of storage locations each being individually accessible for both enqueue and dequeue operations, e.g. using random access memory
    • G06F5/12—Means for monitoring the fill level; Means for resolving contention, i.e. conflicts between simultaneous enqueue and dequeue operations
    • G06F5/14—Means for monitoring the fill level; Means for resolving contention, i.e. conflicts between simultaneous enqueue and dequeue operations for overflow or underflow handling, e.g. full or empty flags
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/07—Synchronising arrangements using pulse stuffing for systems with different or fluctuating information rates or bit rates
    • H04J3/076—Bit and byte stuffing, e.g. SDH/PDH desynchronisers, bit-leaking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/05—Electric or magnetic storage of signals before transmitting or retransmitting for changing the transmission rate
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2205/00—Indexing scheme relating to group G06F5/00; Methods or arrangements for data conversion without changing the order or content of the data handled
    • G06F2205/06—Indexing scheme relating to groups G06F5/06 - G06F5/16
    • G06F2205/061—Adapt frequency, i.e. clock frequency at one side is adapted to clock frequency, or average clock frequency, at the other side; Not pulse stuffing only

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

L'appareil reçoit une composante données à intervalles d'un signal STS-1 et en dérive un signal de données DS-3 sans intervalles. L'appareil comprend un système premier entré, premier sorti (FIFO) (20) destiné à recevoir la composante données (12) du signal STS-1, un circuit de mesure (40) possédant à titre d'entrées un signal d'horloge d'entrée associé au signal STS-1 et le signal d'horloge de sortie de l'appareil pour mesurer efficacement la relative saturation du FIFO, ainsi qu'un oscillateur à quartz commandé en tension (VCXO) (90) destiné à recevoir un signal de commande envoyé par le circuit de mesure et à générer le signal d'horloge de sortie de l'appareil en fonction de ce signal, les données présentes dans le FIFO étant extraites de celui-ci sous forme de signal DS-3 en fonction de la fréquence du signal d'horloge de sortie. Le FIFO est de préférence une mémoire vive sur un octet, et le circuit de mesure est constitué de deux compteurs, d'une porte OU exclusif, et d'un filtre passe-bas. On obtient un système en boucle fermée en renvoyant le signal d'horloge de sortie à l'un des compteurs du circuit de mesure.
CA002095226A 1990-10-31 1991-10-31 Appareil pour engendrer un signal ds-3 a partir de la composante donnees d'un signal sts-1 Expired - Fee Related CA2095226C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US606,482 1990-10-31
US07/606,482 US5157655A (en) 1990-10-31 1990-10-31 Apparatus for generating a ds-3 signal from the data component of an sts-1 payload signal
PCT/US1991/008208 WO1992008304A1 (fr) 1990-10-31 1991-10-31 Appareil generateur d'un signal ds-3 a partir de la composante donnees d'un signal de charge utile sts-1

Publications (2)

Publication Number Publication Date
CA2095226A1 true CA2095226A1 (fr) 1992-05-01
CA2095226C CA2095226C (fr) 2000-06-27

Family

ID=24428161

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002095226A Expired - Fee Related CA2095226C (fr) 1990-10-31 1991-10-31 Appareil pour engendrer un signal ds-3 a partir de la composante donnees d'un signal sts-1

Country Status (3)

Country Link
US (1) US5157655A (fr)
CA (1) CA2095226C (fr)
WO (1) WO1992008304A1 (fr)

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Publication number Priority date Publication date Assignee Title
US5331641A (en) * 1990-07-27 1994-07-19 Transwitch Corp. Methods and apparatus for retiming and realignment of STS-1 signals into STS-3 type signal
DE4108429A1 (de) * 1991-03-15 1992-09-17 Philips Patentverwaltung Uebertragungssystem fuer die digitale synchrone hierarchie
DE4110933A1 (de) * 1991-04-04 1992-10-08 Philips Patentverwaltung Uebertragungssystem fuer die synchrone digitale hierachie
CA2078632C (fr) * 1991-09-19 1997-12-30 Tatsuhiko Nakagawa Methode et dispositif de traitement de signaux sts-1 pouvant empecher les equipements terminaux de declencher de fausses alarmes
US5390180A (en) * 1991-10-10 1995-02-14 Nec America, Inc. SONET DS-N desynchronizer
EP0536464B1 (fr) * 1991-10-10 1998-12-09 Nec Corporation Désynchroniseur Sonet DS-N
US5267236A (en) * 1991-12-16 1993-11-30 Alcatel Network Systems, Inc. Asynchronous parallel data formatter
JPH05199199A (ja) * 1992-01-20 1993-08-06 Fujitsu Ltd スタッフ同期制御方式
US5691976A (en) * 1992-04-02 1997-11-25 Applied Digital Access Performance monitoring and test system for a telephone network
US5479608A (en) * 1992-07-17 1995-12-26 Alcatel Network Systems, Inc. Group facility protection in a digital telecommunications system
US5285206A (en) * 1992-08-25 1994-02-08 Alcatel Network Systems, Inc. Phase detector for elastic store
US5404380A (en) * 1992-08-25 1995-04-04 Alcatel Network Systems, Inc. Desynchronizer for adjusting the read data rate of payload data received over a digital communication network transmitting payload data within frames
US5274635A (en) * 1992-11-18 1993-12-28 Stratacom, Inc. Method and apparatus for aligning a digital communication data stream across a cell network
EP0691768A1 (fr) * 1994-07-07 1996-01-10 International Business Machines Corporation Procédé et dispositif pour effectuer une discrimination relative dans le temps dans un réseau à haute vitesse
US5548534A (en) * 1994-07-08 1996-08-20 Transwitch Corporation Two stage clock dejitter circuit for regenerating an E4 telecommunications signal from the data component of an STS-3C signal
GB2303981A (en) * 1995-07-29 1997-03-05 Northern Telecom Ltd Broadcast video desynchroniser
US5982772A (en) * 1995-11-06 1999-11-09 Sun Microsystems, Inc. Cell interface block partitioning for segmentation and re-assembly engine
US6088413A (en) * 1997-05-09 2000-07-11 Alcatel Apparatus for reducing jitter in a desynchronizer
US6501809B1 (en) * 1999-03-19 2002-12-31 Conexant Systems, Inc. Producing smoothed clock and data signals from gapped clock and data signals
US6463111B1 (en) 2001-05-25 2002-10-08 Transwitch Corporaton Method and apparatus for desynchronizing a DS-3 signal and/or an E3 signal from the data portion of an STS-STM payload
US20030014763A1 (en) * 2001-06-29 2003-01-16 Chappell Christopher L. Method and apparatus facilitating synchronization in a broadband communications system
CN100449967C (zh) * 2001-12-22 2009-01-07 中兴通讯股份有限公司 一种从同步数字传送体系中恢复e3/t3支路信号的装置
US7227876B1 (en) 2002-01-28 2007-06-05 Pmc-Sierra, Inc. FIFO buffer depth estimation for asynchronous gapped payloads
US20040123004A1 (en) * 2002-12-19 2004-06-24 International Business Machines Corporation An improved fifo based controller circuit for slave devices attached to a cpu bus
US7349444B2 (en) * 2004-08-23 2008-03-25 Transwitch Corporation SONET/SDH SPE/virtual container retiming with adaptive dual pointer leak rate computation
CN101217329B (zh) * 2008-01-17 2011-05-25 中兴通讯股份有限公司 使用pdh的支路再定时系统
US8666011B1 (en) 2011-04-20 2014-03-04 Applied Micro Circuits Corporation Jitter-attenuated clock using a gapped clock reference
US8855258B1 (en) 2011-04-20 2014-10-07 Applied Micro Circuits Corporation Transmitters and receivers using a jitter-attenuated clock derived from a gapped clock reference

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4053715A (en) * 1976-03-22 1977-10-11 Trw Inc. Stuffing channel unit for telephone pcm system
US4159535A (en) * 1978-01-23 1979-06-26 Rockwell International Corporation Framing and elastic store circuit apparatus
US4513427A (en) * 1982-08-30 1985-04-23 Xerox Corporation Data and clock recovery system for data communication controller
US4551830A (en) * 1984-03-19 1985-11-05 Rockwell International Corporation Apparatus for providing loopback of signals where the signals being looped back have an overhead data format which is incompatible with a high speed intermediate carrier overhead format
US4685101A (en) * 1984-12-20 1987-08-04 Siemens Aktiengesellschaft Digital multiplexer for PCM voice channels having a cross-connect capability
US4674088A (en) * 1985-03-07 1987-06-16 Northern Telecom Limited Method and apparatus for detecting frame synchronization
CA1232693A (fr) * 1985-09-05 1988-02-09 Alan F. Graves Structure de multiplexage pour reseau
US4791652A (en) * 1987-06-04 1988-12-13 Northern Telecom Limited Synchronization of asynchronous data signals
US4833673A (en) * 1987-11-10 1989-05-23 Bell Communications Research, Inc. Time division multiplexer for DTDM bit streams
US5040170A (en) * 1988-12-09 1991-08-13 Transwitch Corporation System for cross-connecting high speed digital signals
US5033064A (en) * 1988-12-09 1991-07-16 Transwitch Corporation Clock dejitter circuit for regenerating DS1 signal
US4928275A (en) * 1989-05-26 1990-05-22 Northern Telecom Limited Synchronization of asynchronous data signals
CA1326719C (fr) * 1989-05-30 1994-02-01 Thomas E. Moore Circuit d'interface sonet monte entre un ds3 et 28vt1.5
US5052025A (en) * 1990-08-24 1991-09-24 At&T Bell Laboratories Synchronous digital signal to asynchronous digital signal desynchronizer

Also Published As

Publication number Publication date
WO1992008304A1 (fr) 1992-05-14
CA2095226C (fr) 2000-06-27
US5157655A (en) 1992-10-20

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