ES254785A1 - Disposiciën de circuito - Google Patents

Disposiciën de circuito

Info

Publication number
ES254785A1
ES254785A1 ES0254785A ES254785A ES254785A1 ES 254785 A1 ES254785 A1 ES 254785A1 ES 0254785 A ES0254785 A ES 0254785A ES 254785 A ES254785 A ES 254785A ES 254785 A1 ES254785 A1 ES 254785A1
Authority
ES
Spain
Prior art keywords
synchronization signal
oscillator
circuit
gate circuit
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
ES0254785A
Other languages
English (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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES254785A1 publication Critical patent/ES254785A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/12—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D13/00—Circuits for comparing the phase or frequency of two mutually-independent oscillations
    • H03D13/005—Circuits for comparing the phase or frequency of two mutually-independent oscillations in which one of the oscillations is, or is converted into, a signal having a special waveform, e.g. triangular
    • 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
    • H03L7/101—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using an additional control signal to the controlled loop oscillator derived from a signal generated in the loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/12—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising
    • H04N5/126—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising whereby the synchronisation signal indirectly commands a frequency generator

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

Disposición de circuito para sincronizar un oscilador senoidal local con la ayuda de una señal de sincronización, comprendiendo la disposición un detector de fase simétrico propiamente dicho con un filtro asociado al mismo, al que son suministradas la señal de sincronización y una señal de comparación obtenida del oscilador local, debiendo ser comparada esta señal de comparación con la señal de sincronización dentro del así llamado rango de comparación, estando provisto un circuito de enganche separado que consiste de un circuito de compuerta, a cuyo terminal de entrada es suministrada la señal de sincronización y cuyo terminal de salida está acoplado directamente con el oscilador senoidal que debe ser sincronizado, estando dispuesto un detector de fase separado para controlar este circuito de compuerta de modo que este circuito es bloqueado durante la condición de sincronización y desbloqueado durante la condición no sincronizada, caracterizada por el hecho de que el detector defase, propiamente dicho, es capaz de producir, fuera del rango de comparación, una tensión de control de un valor tal que el oscilador, en unión con la señal de sincronización suministrada a través del circuito de compuerta, puede ser reajustado hasta que la diferencia de fase entre la señal de sincronización y la señal producida por el oscilador, es llevada nuevamente al rango de comparación, después de lo cual el circuito de compuerta es bloqueado por la tensión obtenida del detector de fase separado.
ES0254785A 1959-01-09 1960-01-05 Disposiciën de circuito Expired ES254785A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL235002 1959-01-09

Publications (1)

Publication Number Publication Date
ES254785A1 true ES254785A1 (es) 1960-03-01

Family

ID=19751507

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0254785A Expired ES254785A1 (es) 1959-01-09 1960-01-05 Disposiciën de circuito

Country Status (5)

Country Link
DE (1) DE1146526B (es)
ES (1) ES254785A1 (es)
FR (1) FR1244757A (es)
GB (1) GB899935A (es)
NL (2) NL113527C (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1279591A (es) * 1959-12-24
US3155773A (en) * 1960-03-09 1964-11-03 Nat Res Dev System for synchronously detecting signals in the presence of noise
GB1041716A (en) * 1962-06-25 1966-09-07 Hitachi Ltd Automatic frequency and phase control system
US3460052A (en) * 1967-08-02 1969-08-05 Information Dev Corp Oscillator phase and frequency synchronizing circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE965500C (de) * 1952-05-24 1957-06-13 Fernseh Gmbh Verfahren zur Synchronisierung eines Schwingungserzeugers
DE1804349U (de) * 1959-09-03 1960-01-21 Standard Elektrik Lorenz Ag Zeilenfanganordnung fuer fernsehempfaenger.

Also Published As

Publication number Publication date
GB899935A (en) 1962-06-27
DE1146526B (de) 1963-04-04
NL113527C (es)
FR1244757A (fr) 1960-10-28
NL235002A (es)

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