ES2041684T3 - Sistema de bucle de enclavamiento de fase. - Google Patents

Sistema de bucle de enclavamiento de fase.

Info

Publication number
ES2041684T3
ES2041684T3 ES198787304767T ES87304767T ES2041684T3 ES 2041684 T3 ES2041684 T3 ES 2041684T3 ES 198787304767 T ES198787304767 T ES 198787304767T ES 87304767 T ES87304767 T ES 87304767T ES 2041684 T3 ES2041684 T3 ES 2041684T3
Authority
ES
Spain
Prior art keywords
signal
phase
digital
analog
signals
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 - Lifetime
Application number
ES198787304767T
Other languages
English (en)
Inventor
Alvin Reuben Balaban
Walter Heinrich Demmer
Chandrakant Bhailalbhai Patel
Leopold Albert Harwood
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 Licensing Corp
Original Assignee
RCA Licensing 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 RCA Licensing Corp filed Critical RCA Licensing Corp
Application granted granted Critical
Publication of ES2041684T3 publication Critical patent/ES2041684T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/44—Colour synchronisation
    • H04N9/45—Generation or recovery of colour sub-carriers
    • 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
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/087—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using at least two phase detectors or a frequency and phase detector in the loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Processing Of Color Television Signals (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Coloring (AREA)
  • Synchronizing For Television (AREA)

Abstract

SE DESCRIBE UN CIRCUITO DE SINCRONIZACION DE FASE QUE PUEDE UTILIZARSE EN SISTEMAS DIGITALES CON INESTABILIDAD EN LA FRECUENCIA DE LA SEÑAL DE RELOJ. EL CIRCUITO TIENE UN OSCILADOR ANALOGICO (342) CUYA FRECUENCIA SE DETERMINA POR UNA SEÑAL DE CONTROL ANALOGICA. LA SEÑAL OSCILATORIA SE DIGITALIZA (344) Y COMPARA EN FASE (338) CON UNA SEÑAL DE REFERENCIA DIGITAL, CONVIRTIENDOSE LA SALIDA DIGITAL DEL COMPARADOR DE FASE (340) EN UNA SEÑAL ANALOGICA QUE SUMINISTRA LA SEÑAL DE CONTROL DE OSCILADOR. EN LA APLICACION DEL INVENTO A UN RECEPTOR DIGITAL DE TELEVISION QUE TIENE UN RELOJ DE BLOQUEO DE LINEA, EL CIRCUITO DE SINCRONIZACION DE FASE (350) REGENERA DOS SEÑALES DE SUBPORTADORA (COS,SIN) EN CUADRATURA DE FASE, QUE SE UTILIZAN PARA DESMODULAR SINCRONICAMENTE LOS COMPONENTES DE LA SEÑAL DE CROMINANCIA (CB) DE LAS SEÑALES COMPUESTAS DE VIDEO EN DOS SEÑALES DE INFORMACION DE COLOR (I,Q). EL OSCILADOR ANALOGICO DE VOLTAJE CONTROLADO (342) DEL CIRCUITO DE SINCRONIZACION DE FASE (350) GENERA UNA SEÑAL INDEPENDIENTE DE CUALQUIER INESTABILIDAD DE FRECUENCIA EN LA SEÑAL DE RELOJ DE BLOQUEO DE LINEA. EL CONVERTIDOR ANALOGICO-DIGITAL (344) DIGITALIZA ESTA SEÑAL PARA OBTENER UNA DE LAS SEÑALES DE SUBPORTADORA DE LA QUE SE GENERA LA SEÑAL EN CUADRATURA, POR EJEMPLO DE UNA MEMORIA ROM (348). LAS DOS SEÑALES DE INFORMACION DE COLOR (I,Q) SE OBTIENEN MULTIPLICANDO (332,334) LAS SEÑALES DE CROMINANCIA POR LA PRIMERA Y SEGUNDA SEÑALES SUBPORTADORAS. EL COMPARADOR DE FASE (336) DETERMINA LA FASE DEL VECTOR SUMA DE LAS DOS SEÑALES DE INFORMACION DE COLOR Y LA COMPARA CON UN VALOR DESEADO DE FASE A FIN DE GENERAR UNA SEÑAL DE DIFERENCIA DE FASE. ESTA SE FILTRA (338) Y SE APLICA AL CONVERTIDOR DIGITAL-ANALOGICO (340), EL CUAL PROPORCIONA LA SEÑAL DE CONTROL DE FRECUENCIA PARA EL OSCILADOR ANALOGICO (342). UN FILTRO DE SEGUIMIENTO (346) PUEDE INSERTARSE EN EL PUERTO DE SALIDA DEL CONVERTIDOR ANALOGICO-DIGITAL (344) PARA POSIBILITAR QUE SU RESOLUCION DE CUANTIFICACION SE REDUZCA SIN QUE SE VEA AFECTADO EL FUNCIONAMIENTO DEL CIRCUITO DE SINCRONIZACION DE FASE.
ES198787304767T 1986-05-30 1987-05-29 Sistema de bucle de enclavamiento de fase. Expired - Lifetime ES2041684T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/868,567 US4686560A (en) 1986-05-30 1986-05-30 Phase locked loop system including analog and digital components

Publications (1)

Publication Number Publication Date
ES2041684T3 true ES2041684T3 (es) 1993-12-01

Family

ID=25351933

Family Applications (1)

Application Number Title Priority Date Filing Date
ES198787304767T Expired - Lifetime ES2041684T3 (es) 1986-05-30 1987-05-29 Sistema de bucle de enclavamiento de fase.

Country Status (10)

Country Link
US (1) US4686560A (es)
EP (1) EP0247891B1 (es)
JP (1) JPS6310823A (es)
KR (1) KR960001313B1 (es)
AT (1) ATE91832T1 (es)
AU (1) AU597665B2 (es)
CA (1) CA1257381A (es)
DE (1) DE3786605T2 (es)
ES (1) ES2041684T3 (es)
FI (1) FI89433C (es)

Families Citing this family (28)

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Publication number Priority date Publication date Assignee Title
US4694327A (en) * 1986-03-28 1987-09-15 Rca Corporation Digital phase locked loop stabilization circuitry using a secondary digital phase locked loop
MY102145A (en) * 1986-08-26 1992-04-30 Nippon Denki Home Electronics Digital color demodulator.
US4858142A (en) * 1987-08-05 1989-08-15 Tektronix, Inc. Digitizer effective resolution measurement system using sinewave parameter estimation
US4817150A (en) * 1987-08-31 1989-03-28 Rca Licensing Corporation Oscillator frequency control arrangement for a stereo decoder
NL8800557A (nl) * 1988-03-07 1989-10-02 Philips Nv Kleurentelevisiestandaardidentificatieschakeling.
JPH0770994B2 (ja) * 1989-01-12 1995-07-31 松下電器産業株式会社 位相同期回路
DE3910703A1 (de) * 1989-04-03 1990-10-04 Philips Patentverwaltung Hybrider phasenregelkreis
JP2896901B2 (ja) * 1989-05-26 1999-05-31 アールシーエー トムソン ライセンシング コーポレーション 位相固定された副搬送波再生回路
DE4108415A1 (de) * 1991-03-15 1992-09-17 Thomson Brandt Gmbh Schaltung zum erzeugen eines farbtraegers aus dem farbsynchronsignal
JP3241079B2 (ja) * 1992-02-24 2001-12-25 株式会社日立製作所 ディジタル位相同期回路
JP2850643B2 (ja) * 1992-06-09 1999-01-27 松下電器産業株式会社 ディジタル色信号復調装置
DE4336240A1 (de) * 1993-10-23 1995-04-27 Sel Alcatel Ag Schaltungsanordnung für einen digitalen Phasenkomparator
US5832048A (en) * 1993-12-30 1998-11-03 International Business Machines Corporation Digital phase-lock loop control system
EP0710033A3 (en) * 1994-10-28 1999-06-09 Matsushita Electric Industrial Co., Ltd. MPEG video decoder having a high bandwidth memory
GB2295935B (en) * 1994-12-09 1999-05-12 Plessey Semiconductors Ltd Oscillatory signal generator arrangement
JP3320576B2 (ja) * 1994-12-22 2002-09-03 株式会社東芝 発振回路
US6097440A (en) * 1995-11-17 2000-08-01 Sony Corporation Synchronous processing device
JP3304036B2 (ja) * 1996-04-22 2002-07-22 モトローラ株式会社 ディジタル映像処理装置のクロック発生回路
US5786865A (en) * 1996-06-28 1998-07-28 Zilog, Inc. Apparatus and method for digital amplitude and phase detection
US5760617A (en) * 1996-08-20 1998-06-02 Analog Devices, Incorporated Voltage-to-frequency converter
US5796392A (en) 1997-02-24 1998-08-18 Paradise Electronics, Inc. Method and apparatus for clock recovery in a digital display unit
US6704382B1 (en) 1997-07-11 2004-03-09 Tellabs Operations, Inc. Self-sweeping autolock PLL
US6330034B1 (en) * 1997-10-31 2001-12-11 Texas Instruments Incorporated Color phase-locked loop for video decoder
WO2000043849A2 (de) * 1999-01-21 2000-07-27 Infineon Technologies Ag Elektronischer phasenregelkreis (pll)
DE10033109C2 (de) * 2000-07-07 2002-06-20 Infineon Technologies Ag Taktsignalgenerator
TW200727591A (en) * 2006-01-06 2007-07-16 Realtek Semiconductor Corp Phase lock loop (PLL) for rapid lock-in
DE102006007094B3 (de) * 2006-02-15 2007-08-16 Infineon Technologies Ag Verfahren zur Synchronisation eines Taktsignals auf ein Referenzsignal und Phasenregelkreis
US8274317B2 (en) * 2009-12-21 2012-09-25 Electronics And Telecommunications Research Institute Phase-locked loop circuit comprising voltage-controlled oscillator having variable gain

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057260B2 (ja) * 1976-04-19 1985-12-13 日本電気株式会社 不規則制御位相同期装置
GB2059711B (en) * 1979-09-12 1983-07-20 British Broadcasting Corp Digital demodulation or modulation of television chrominance signals
DE3027828A1 (de) * 1980-07-23 1982-03-04 Deutsche Itt Industries Gmbh, 7800 Freiburg Frequenz/phasenregelschleife
US4380742A (en) * 1980-08-04 1983-04-19 Texas Instruments Incorporated Frequency/phase locked loop circuit using digitally controlled oscillator
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
NL8103437A (nl) * 1981-07-21 1983-02-16 Philips Nv Synchroniseerschakeling voor een televisie-ontvanger.
US4415918A (en) * 1981-08-31 1983-11-15 Rca Corporation Digital color television signal demodulator
US4500909A (en) * 1982-01-21 1985-02-19 Victor Company Of Japan, Ltd. Synchronizing signal generating apparatus
US4447826A (en) * 1982-03-18 1984-05-08 Rca Corporation Digital television receiver automatic chroma control system
NL8204936A (nl) * 1982-12-22 1984-07-16 Philips Nv Demodulatieschakeling voor een gedigitaliseerd chrominantiesignaal.
DE3314973C1 (de) * 1983-04-26 1984-07-19 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Schaltungsanordnung zur Erzeugung einer stabilen festen Frequenz
DE3345142C1 (de) * 1983-12-14 1985-02-14 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover Schaltung zur Zeitkompression oder Zeitexpansion eines Videosignals
DE3432313A1 (de) * 1984-09-03 1986-03-13 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung zum synchronisieren eines signals
DE3432314A1 (de) * 1984-09-03 1986-03-13 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung zum ableiten digitaler farbsignale aus einem analogen fernsehsignal

Also Published As

Publication number Publication date
DE3786605D1 (de) 1993-08-26
AU597665B2 (en) 1990-06-07
EP0247891A3 (en) 1989-07-05
JPS6310823A (ja) 1988-01-18
DE3786605T2 (de) 1994-02-17
US4686560A (en) 1987-08-11
KR870011755A (ko) 1987-12-26
KR960001313B1 (ko) 1996-01-25
EP0247891A2 (en) 1987-12-02
EP0247891B1 (en) 1993-07-21
FI872259A0 (fi) 1987-05-22
FI872259A7 (fi) 1987-12-01
CA1257381A (en) 1989-07-11
FI89433C (fi) 1993-09-27
FI89433B (fi) 1993-06-15
AU7339687A (en) 1987-12-03
ATE91832T1 (de) 1993-08-15

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