FR2445064A1 - Circuit electrique faisant fonction de boucle d'alignement de phase - Google Patents

Circuit electrique faisant fonction de boucle d'alignement de phase

Info

Publication number
FR2445064A1
FR2445064A1 FR7931502A FR7931502A FR2445064A1 FR 2445064 A1 FR2445064 A1 FR 2445064A1 FR 7931502 A FR7931502 A FR 7931502A FR 7931502 A FR7931502 A FR 7931502A FR 2445064 A1 FR2445064 A1 FR 2445064A1
Authority
FR
France
Prior art keywords
signal
adder
phase
alignment filter
alignment
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
FR7931502A
Other languages
English (en)
Other versions
FR2445064B1 (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.)
Sony Corp
Original Assignee
Sony 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
Application filed by Sony Corp filed Critical Sony Corp
Publication of FR2445064A1 publication Critical patent/FR2445064A1/fr
Application granted granted Critical
Publication of FR2445064B1 publication Critical patent/FR2445064B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/08—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using varactors, i.e. voltage variable reactive diodes
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H04N9/22—Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information
    • H04N9/24—Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information using means, integral with, or external to, the tube, for producing signal indicating instantaneous beam position
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0153—Electrical filters; Controlling thereof
    • H03H7/0161—Bandpass filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Filters And Equalizers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

L'invention concerne un circuit faisant fonction de boucle d'alignement de phase. Il comprend un additionneur 42 qui reçoit un signal d'entrée de fréquence fluctuante, un filtre d'alignement 43 qui est connecté à la sortie de l'additionneur et dont la fréquence centrale de bande passante peut être déplacée en réponse à une tension de commande afin de suivre les variations de la fréquence du signal d'entrée, un atténuateur 44 renvoyant à l'additionneur une version affaiblie du signal de sortie du filtre d'alignement, et un comparateur de phase 47 qui compare le signal de sortie de l'additionneur avec celui du filtre d'alignement afin de produire une tension de commande correspondante à destination du filtre d'alignement. Le circuit de l'invention peut être utilisé comme discriminateur de modulation de fréquence, auquel cas la tension de commande peut également constituer un signal démodulé. Le circuit peut aussi être utilisé pour commander la commutation des couleurs dans un tube à rayons cathodiques à repérage de faisceau, un signal ajusté alignant la phase du signal de repérage pouvant être obtenu d'une boucle de verrouillage de phase qui produit l'un des signaux d'entrée du comparateur de phase en réponse au signal de sortie du filtre d'alignement.
FR7931502A 1978-12-22 1979-12-21 Circuit electrique faisant fonction de boucle d'alignement de phase Granted FR2445064A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16381178A JPS5586212A (en) 1978-12-22 1978-12-22 Frequency tracking circuit

Publications (2)

Publication Number Publication Date
FR2445064A1 true FR2445064A1 (fr) 1980-07-18
FR2445064B1 FR2445064B1 (fr) 1983-12-30

Family

ID=15781151

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7931502A Granted FR2445064A1 (fr) 1978-12-22 1979-12-21 Circuit electrique faisant fonction de boucle d'alignement de phase

Country Status (10)

Country Link
US (1) US4263614A (fr)
JP (1) JPS5586212A (fr)
AT (1) AT384509B (fr)
AU (1) AU523101B2 (fr)
CA (1) CA1130450A (fr)
DE (1) DE2950468A1 (fr)
FR (1) FR2445064A1 (fr)
GB (1) GB2044026B (fr)
NL (1) NL191131C (fr)
SE (1) SE449810B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55133183A (en) * 1979-04-03 1980-10-16 Sony Corp Correction circuit for horizontal linearity
US4703231A (en) * 1984-06-26 1987-10-27 Matsushita Electric Industrial Co., Ltd. Flat type image display tube and display device using the same
JPH0787476B2 (ja) * 1988-10-07 1995-09-20 日本電気株式会社 復調装置
NL8901295A (nl) * 1989-05-24 1990-12-17 Philips Nv Werkwijze voor het bepalen van een weergeefparameter in een beeldbuis en werkwijze voor het verbeteren van een beeldweergave in een beeldbuis.
JP2954052B2 (ja) * 1996-11-28 1999-09-27 日本電気アイシーマイコンシステム株式会社 映像表示装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2099631A1 (fr) * 1970-07-28 1972-03-17 Philips Nv

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5222867A (en) * 1975-08-15 1977-02-21 Victor Co Of Japan Ltd Demodulation system for angle modulated wave signal
JPS6035786B2 (ja) * 1977-12-20 1985-08-16 ソニー株式会社 ビ−ムインデツクス方式のカラ−受像管
US4223344A (en) * 1977-12-21 1980-09-16 Sony Corporation Beam index color cathode ray tube
JPS5488725A (en) * 1977-12-26 1979-07-14 Sony Corp Color television receiver

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2099631A1 (fr) * 1970-07-28 1972-03-17 Philips Nv

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/78 *

Also Published As

Publication number Publication date
GB2044026A (en) 1980-10-08
NL7909297A (nl) 1980-06-24
DE2950468C2 (fr) 1991-03-14
SE7910617L (sv) 1980-08-27
NL191131B (nl) 1994-09-01
GB2044026B (en) 1983-04-20
US4263614A (en) 1981-04-21
JPS5586212A (en) 1980-06-28
JPS6258164B2 (fr) 1987-12-04
SE449810B (sv) 1987-05-18
FR2445064B1 (fr) 1983-12-30
AU5348279A (en) 1980-06-26
CA1130450A (fr) 1982-08-24
ATA806279A (de) 1987-04-15
DE2950468A1 (de) 1980-07-03
AU523101B2 (en) 1982-07-08
NL191131C (nl) 1995-02-01
AT384509B (de) 1987-11-25

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Legal Events

Date Code Title Description
ST Notification of lapse