NO953288L - Fremgangsmåte til synkronisering av utgangsfrekvensene til en taktgenerator - Google Patents

Fremgangsmåte til synkronisering av utgangsfrekvensene til en taktgenerator

Info

Publication number
NO953288L
NO953288L NO953288A NO953288A NO953288L NO 953288 L NO953288 L NO 953288L NO 953288 A NO953288 A NO 953288A NO 953288 A NO953288 A NO 953288A NO 953288 L NO953288 L NO 953288L
Authority
NO
Norway
Prior art keywords
frequency
output
synchronizing
dpll
clock generator
Prior art date
Application number
NO953288A
Other languages
English (en)
Other versions
NO953288D0 (no
Inventor
Jochen Egbers
Rainer Goerge
Karl-Eckhardt Huhn
Nikolaus Riehm
Original Assignee
Deutsche Telephonwerk Kabel
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 Deutsche Telephonwerk Kabel filed Critical Deutsche Telephonwerk Kabel
Publication of NO953288D0 publication Critical patent/NO953288D0/no
Publication of NO953288L publication Critical patent/NO953288L/no

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/07—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop using several loops, e.g. for redundant clock signal generation

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

En fremgangsmåte til synkronisering av utgangs- frekvensene til en taktgenerator f.eks. i tele- kommunikasjonsanlegg på eksterne inngangs- frekvenser med høy nøyaktighet benytter en relativt unøyaktig arbeidsfrekvens (FWORJC) som grunn- frekvens for taktgeneratoren. Ved hjelp av en frekvenssyntetisator blir grunnfrekvensen omformet til en nøyaktig frekvens. De eksterne inngangs- frekvenser (FE) blir ved hjelp av en innstillbar frekvensanalysator (FB) omformet til en norm- frekvens (FNOR), den av en digital faselåst sløye (DPLL) avgitte signalfrekvens (SIP) reguleres synkront til normfrekvensen (FNOR) og en frekvensdeler (FT) genererer de systeminterne ut- gangsfrekvenser (FÅ), idet en forkoblet analog faselåst sløyfe (APLL) på signalfrekvensen (SIP) utfører korreksjoner som tjener til forhindring av tidssprang i utgangsfrekvensene (FÅ).
NO953288A 1994-08-24 1995-08-22 Fremgangsmåte til synkronisering av utgangsfrekvensene til en taktgenerator NO953288L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4431415A DE4431415C2 (de) 1994-08-24 1994-08-24 Verfahren zum Synchronisieren der Ausgangsfrequenzen eines Taktgenerators

Publications (2)

Publication Number Publication Date
NO953288D0 NO953288D0 (no) 1995-08-22
NO953288L true NO953288L (no) 1996-02-26

Family

ID=6527342

Family Applications (1)

Application Number Title Priority Date Filing Date
NO953288A NO953288L (no) 1994-08-24 1995-08-22 Fremgangsmåte til synkronisering av utgangsfrekvensene til en taktgenerator

Country Status (7)

Country Link
EP (1) EP0698968B1 (no)
AT (1) ATE192612T1 (no)
CZ (1) CZ286319B6 (no)
DE (2) DE4431415C2 (no)
FI (1) FI953991A (no)
NO (1) NO953288L (no)
SK (1) SK281836B6 (no)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5960331A (en) * 1996-07-01 1999-09-28 Harris Corporation Device and method for maintaining synchronization and frequency stability in a wireless telecommunication system
DE19722114C2 (de) * 1997-05-27 2003-04-30 Bosch Gmbh Robert Taktsignal-Bereitstellungsvorrichtung und -verfahren
DE60331698D1 (de) 2003-04-02 2010-04-22 Christopher Julian Travis Numerisch gesteuerter Oszillator und Verfahren zum Erzeugen eines Ereignis-Taktes

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4131861A (en) * 1977-12-30 1978-12-26 International Business Machines Corporation Variable frequency oscillator system including two matched oscillators controlled by a phase locked loop
DE2938228C2 (de) * 1979-09-21 1982-02-25 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren und Schaltung zur Synchronisation
US4598257A (en) * 1983-05-31 1986-07-01 Siemens Corporate Research & Support, Inc. Clock pulse signal generator system
US4672299A (en) * 1986-05-23 1987-06-09 American Telephone And Telegraph Co. Clock control circuit for phase control
US4953185A (en) * 1988-10-05 1990-08-28 Motorola Inc. Clock recovery and hold circuit for digital TDM mobile radio
DE4001065A1 (de) * 1989-01-23 1990-08-02 Siemens Ag Synchronisiereinrichtung fuer einen redundanten blockcode
DE4018911A1 (de) * 1990-06-13 1992-01-02 Ant Nachrichtentech Verfahren zur rahmensynchronisation bei zeitvarianter codierter phasenumtastung
US5184350A (en) * 1991-04-17 1993-02-02 Raytheon Company Telephone communication system having an enhanced timing circuit
US5144254A (en) * 1991-09-30 1992-09-01 Wilke William G Dual synthesizer including programmable counters which are controlled by means of calculated input controls
US5353311A (en) * 1992-01-09 1994-10-04 Nec Corporation Radio transmitter
DE4218132C2 (de) * 1992-06-02 1994-05-19 Ant Nachrichtentech Verfahren zur Taktrückgewinnung und Synchronisation

Also Published As

Publication number Publication date
FI953991A0 (fi) 1995-08-24
EP0698968B1 (de) 2000-05-03
DE59508248D1 (de) 2000-06-08
DE4431415A1 (de) 1996-02-29
ATE192612T1 (de) 2000-05-15
FI953991A (fi) 1996-02-25
NO953288D0 (no) 1995-08-22
CZ286319B6 (cs) 2000-03-15
EP0698968A1 (de) 1996-02-28
CZ215895A3 (en) 1996-04-17
SK281836B6 (sk) 2001-08-06
DE4431415C2 (de) 1997-01-23
SK103495A3 (en) 1996-05-08

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Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application