ES8502585A1 - Frequency control device to synchronise an oscillator with an external signal of very accurate mean frequency but having a high jitter - Google Patents

Frequency control device to synchronise an oscillator with an external signal of very accurate mean frequency but having a high jitter

Info

Publication number
ES8502585A1
ES8502585A1 ES523694A ES523694A ES8502585A1 ES 8502585 A1 ES8502585 A1 ES 8502585A1 ES 523694 A ES523694 A ES 523694A ES 523694 A ES523694 A ES 523694A ES 8502585 A1 ES8502585 A1 ES 8502585A1
Authority
ES
Spain
Prior art keywords
control device
frequency
oscillator
synchronise
external 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
ES523694A
Other languages
Spanish (es)
Other versions
ES523694A0 (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.)
Nokia Spain SA
Original Assignee
Alcatel Espana 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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES8502585A1 publication Critical patent/ES8502585A1/en
Publication of ES523694A0 publication Critical patent/ES523694A0/en
Granted legal-status Critical Current

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
    • H03L7/08—Details of the phase-locked loop
    • H03L7/14—Details of the phase-locked loop for assuring constant frequency when supply or correction voltages fail or are interrupted
    • H03L7/146—Details of the phase-locked loop for assuring constant frequency when supply or correction voltages fail or are interrupted by using digital means for generating the oscillator control signal
    • H03L7/148—Details of the phase-locked loop for assuring constant frequency when supply or correction voltages fail or are interrupted by using digital means for generating the oscillator control signal said digital means comprising a counter or a divider
    • 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
    • H03L7/08—Details of the phase-locked loop
    • H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
    • H03L7/113—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using frequency discriminator

Landscapes

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

Abstract

FREQUENCY CONTROL DEVICE OF A CLOCK ON A VERY EXACT SEN/EXTERNAL MEDIUM FREQUENCY BUT WITH A HIGH INSTABILITY. CONSISTS OF A PHASE COMPARATOR THAT RECEIVES THE REFERENCE SEN/AL; FROM A LOW PASS FILTER; AND OF A SWITCHING CIRCUIT THAT CONTROLLED THE OSCILLATOR CONTROLLED BY TENSION.DE APPLICATION IN DIGITAL TELEPHONE CENTRALS THAT USE MODULATION BY CODED PULSES. (Machine-translation by Google Translate, not legally binding)
ES523694A 1982-06-30 1983-06-29 A CLOCK FREQUENCY CONTROL DEVICE ON AN EXTERNAL SIGNAL. Granted ES523694A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8211451A FR2529733A1 (en) 1982-06-30 1982-06-30 DEVICE FOR FREQUENTLY SERVICING A CLOCK ON AN OUTER SIGNAL WITH HIGH AVERAGE FREQUENCY BUT HAVING IMPORTANT GIGE

Publications (2)

Publication Number Publication Date
ES8502585A1 true ES8502585A1 (en) 1984-10-01
ES523694A0 ES523694A0 (en) 1984-10-01

Family

ID=9275545

Family Applications (1)

Application Number Title Priority Date Filing Date
ES523694A Granted ES523694A0 (en) 1982-06-30 1983-06-29 A CLOCK FREQUENCY CONTROL DEVICE ON AN EXTERNAL SIGNAL.

Country Status (4)

Country Link
BE (1) BE897171A (en)
ES (1) ES523694A0 (en)
FR (1) FR2529733A1 (en)
GB (1) GB2122822B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3526363A1 (en) * 1985-07-19 1987-01-22 Siemens Ag METHOD FOR PRODUCING AN ADJUSTABLE FREQUENCY GENERATOR
GB2199708B (en) * 1986-11-01 1991-05-01 Storno As Digital automatic frequency control
US4817150A (en) * 1987-08-31 1989-03-28 Rca Licensing Corporation Oscillator frequency control arrangement for a stereo decoder
US4855683A (en) * 1987-11-18 1989-08-08 Bell Communications Research, Inc. Digital phase locked loop with bounded jitter
FR2624673A1 (en) * 1987-12-15 1989-06-16 Milon Jean Digitally controlled oscillator, using a switchable element, application to the production of devices for recovering the tempo and phase of a digital signal
DE3912838A1 (en) * 1989-04-19 1990-10-25 Thomson Brandt Gmbh PLL CIRCUIT FOR GENERATING A CLOCK SIGNAL IN A RECORDER
GB2239146A (en) * 1989-12-13 1991-06-19 Martin Greenwood Digital mobile communications clock extractor
US5517685A (en) * 1993-04-27 1996-05-14 Matsushita Electric Industrial Co., Ltd. PLL circuit having a multiloop, and FM receiving method and apparatus able to utilize the same
US5625358A (en) * 1993-09-13 1997-04-29 Analog Devices, Inc. Digital phase-locked loop utilizing a high order sigma-delta modulator
US5483201A (en) * 1993-09-30 1996-01-09 At&T Corp. Synchronization circuit using a high speed digital slip counter
JP3275222B2 (en) * 1994-03-04 2002-04-15 富士通株式会社 Phase locked oscillator
US5732002A (en) * 1995-05-23 1998-03-24 Analog Devices, Inc. Multi-rate IIR decimation and interpolation filters
EP0768756B1 (en) * 1995-10-13 2002-01-16 Pioneer Electronic Corporation Receiver and frequency synthesizer-tuner for the same
FR2755552B1 (en) * 1996-11-06 1999-01-08 Telediffusion Fse DEVICE FOR RECOGNIZING A NON-CONTINUOUS FREQUENCY INPUT CLOCK SIGNAL
US6124764A (en) * 1999-01-22 2000-09-26 Telefonaktiebolaget Lm Ericsson Stable low-power oscillator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3562661A (en) * 1969-01-15 1971-02-09 Ibm Digital automatic phase and frequency control system
GB1268322A (en) * 1970-10-19 1972-03-29 Mullard Ltd Automatic frequency control system
SE384956B (en) * 1975-06-17 1976-05-24 Ericsson Telefon Ab L M DEVICE FOR FREQUENCY CONTROL OF AN OSCILLATOR CIRCUIT
CH615789A5 (en) * 1976-06-24 1980-02-15 Oscilloquartz Sa
US4069462A (en) * 1976-12-13 1978-01-17 Data General Corporation Phase-locked loops
DE2743252A1 (en) * 1977-09-26 1979-04-05 Siemens Ag METHOD FOR SYNCHRONIZING OFFICE CLOCKS PROVIDED IN SWITCHING OFFICES OF A TELECOMMUNICATION NETWORK
GB2057214B (en) * 1979-08-27 1983-12-07 Rca Corp Tuning system

Also Published As

Publication number Publication date
FR2529733A1 (en) 1984-01-06
GB2122822B (en) 1986-10-01
GB8311449D0 (en) 1983-06-02
BE897171A (en) 1984-01-02
GB2122822A (en) 1984-01-18
ES523694A0 (en) 1984-10-01

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