FR2371090A1 - Systeme de synchronisation d'un maitre oscillateur - Google Patents

Systeme de synchronisation d'un maitre oscillateur

Info

Publication number
FR2371090A1
FR2371090A1 FR7734181A FR7734181A FR2371090A1 FR 2371090 A1 FR2371090 A1 FR 2371090A1 FR 7734181 A FR7734181 A FR 7734181A FR 7734181 A FR7734181 A FR 7734181A FR 2371090 A1 FR2371090 A1 FR 2371090A1
Authority
FR
France
Prior art keywords
synchronization system
oscillator
master oscillator
reference signal
synchronization
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
FR7734181A
Other languages
English (en)
Other versions
FR2371090B1 (fr
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.)
RCA Corp
Original Assignee
RCA Corp
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
Priority claimed from GB4754676A external-priority patent/GB1589278A/en
Application filed by RCA Corp filed Critical RCA Corp
Publication of FR2371090A1 publication Critical patent/FR2371090A1/fr
Application granted granted Critical
Publication of FR2371090B1 publication Critical patent/FR2371090B1/fr
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
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/197—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
    • H03L7/199—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division with reset of the frequency divider or the counter, e.g. for assuring initial synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/06—Generation of synchronising signals
    • H04N5/067—Arrangements or circuits at the transmitter end
    • H04N5/073—Arrangements or circuits at the transmitter end for mutually locking plural sources of synchronising signals, e.g. studios or relay stations

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Synchronizing For Television (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

Système de synchronisation d'oscillateur comportant au moins deux signaux de sortie de fréquences sensiblement différentes à partir d'un unique signal de référence externe. Le système de synchronisation selon l'invention comporte essentiellement un oscillateur 10 engendrant une certaine fréquence de sortie à partir de la première, une source de signal de référence externe appliquée à la borne 33, un détecteur de phase 14 agissant sur l'oscillateur 10 par l'intermédiaire d'un moyen de couplage 16 et des moyens de commande 18, 20 qui permettent de réinitialiser le diviseur 12. L'invention s'applique essentiellement pour la synchronisation des différents signaux dans un système de télevision couleurs.
FR7734181A 1976-11-15 1977-11-14 Systeme de synchronisation d'un maitre oscillateur Granted FR2371090A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4754676A GB1589278A (en) 1976-11-15 1976-11-15 Master oscillator synchronising system
US05/776,711 US4092672A (en) 1976-11-15 1977-03-11 Master oscillator synchronizing system

Publications (2)

Publication Number Publication Date
FR2371090A1 true FR2371090A1 (fr) 1978-06-09
FR2371090B1 FR2371090B1 (fr) 1981-08-21

Family

ID=26266075

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7734181A Granted FR2371090A1 (fr) 1976-11-15 1977-11-14 Systeme de synchronisation d'un maitre oscillateur

Country Status (7)

Country Link
US (1) US4092672A (fr)
JP (1) JPS5915219B2 (fr)
CA (1) CA1088636A (fr)
DE (1) DE2751021C3 (fr)
FR (1) FR2371090A1 (fr)
IT (1) IT1087050B (fr)
NL (1) NL7712506A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2407505A1 (fr) * 1977-10-26 1979-05-25 Siemens Ag Montage pour reduire le temps de synchronisation en phase d'un circuit de regulation de phase sur la position de phase de signaux d'entree
FR2552955A1 (fr) * 1983-09-29 1985-04-05 Tektronix Inc Procede de commande de la frequence d'un oscillateur et circuit de commande a boucle d'asservissement de phase
EP0403093A2 (fr) * 1989-06-16 1990-12-19 Hewlett-Packard Company Procédé et dispositif pour synchroniser le balayage de plusieurs instruments

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2856211A1 (de) * 1978-12-27 1980-07-03 Licentia Gmbh Digitale phasenregelschaltung mit einer hilfsschaltung
JPS55112045A (en) * 1979-02-22 1980-08-29 Sony Corp Pll circuit
US4346407A (en) * 1980-06-16 1982-08-24 Sanders Associates, Inc. Apparatus for synchronization of a source of computer controlled video to another video source
JPS6051312B2 (ja) * 1981-03-20 1985-11-13 日本ビクター株式会社 水平走査周波数逓倍回路
US4464679A (en) * 1981-07-06 1984-08-07 Rca Corporation Method and apparatus for operating a microprocessor in synchronism with a video signal
US6356316B1 (en) * 1982-01-04 2002-03-12 Video Associates Labs, Inc. Microkeyer: microcomputer broadcast video overlay device and method
GB2148652B (en) * 1983-09-15 1987-09-09 Sinclair Res Ltd Television receivers
US4843469A (en) * 1987-04-13 1989-06-27 The Grass Valley Group, Inc. Rapid signal acquisition and phase averaged horizontal timing from composite sync
JP2975607B2 (ja) * 1989-03-16 1999-11-10 三洋電機株式会社 Ａｆｃ回路
US5745314A (en) * 1989-09-27 1998-04-28 Canon Kabushiki Kaisha Clock generating circuit by using the phase difference between a burst signal and the oscillation signal
DE3940860A1 (de) * 1989-12-11 1991-06-13 Thomson Brandt Gmbh Schaltungsanordnung zum erkennen eines fernsehsignals
US5528307A (en) * 1991-07-18 1996-06-18 Canon Kabushiki Kaisha Clock generator
KR100275753B1 (ko) * 1998-11-30 2000-12-15 윤종용 텔레비젼 시스템의 지터 보정장치 및 방법

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2052112A1 (de) * 1970-10-23 1972-04-27 Licentia Gmbh Schaltung zur Erzeugung eines Trägers
FR2291638A1 (fr) * 1974-11-14 1976-06-11 Hewlett Packard Co Oscillateur declenchable a bouche d'asservissement de phase

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL163694C (nl) * 1972-11-24 1980-09-15 Philips Nv Schakeling voor het opwekken van een stuursignaal voor de rasteruitgangstrap in een televisie-ontvanger, alsmede televisie-ontvanger, daarvan voorzien.
JPS52104856A (en) * 1976-02-27 1977-09-02 Fujitsu Ltd Phase synchronization
US4025951A (en) * 1976-06-09 1977-05-24 Gte Sylvania Incorporated Vertical synchronizing circuit having adjustable sync pulse window

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2052112A1 (de) * 1970-10-23 1972-04-27 Licentia Gmbh Schaltung zur Erzeugung eines Trägers
FR2291638A1 (fr) * 1974-11-14 1976-06-11 Hewlett Packard Co Oscillateur declenchable a bouche d'asservissement de phase

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2407505A1 (fr) * 1977-10-26 1979-05-25 Siemens Ag Montage pour reduire le temps de synchronisation en phase d'un circuit de regulation de phase sur la position de phase de signaux d'entree
FR2552955A1 (fr) * 1983-09-29 1985-04-05 Tektronix Inc Procede de commande de la frequence d'un oscillateur et circuit de commande a boucle d'asservissement de phase
EP0403093A2 (fr) * 1989-06-16 1990-12-19 Hewlett-Packard Company Procédé et dispositif pour synchroniser le balayage de plusieurs instruments
EP0403093A3 (fr) * 1989-06-16 1992-01-22 Hewlett-Packard Company Procédé et dispositif pour synchroniser le balayage de plusieurs instruments

Also Published As

Publication number Publication date
IT1087050B (it) 1985-05-31
US4092672A (en) 1978-05-30
DE2751021C3 (de) 1980-08-21
JPS5362450A (en) 1978-06-03
DE2751021A1 (de) 1978-05-24
JPS5915219B2 (ja) 1984-04-07
FR2371090B1 (fr) 1981-08-21
NL7712506A (nl) 1978-05-17
CA1088636A (fr) 1980-10-28
DE2751021B2 (de) 1979-12-06

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ST Notification of lapse