ES2041683T3 - Convertidor de analogico a digital multiplexado por division de frecuencias. - Google Patents

Convertidor de analogico a digital multiplexado por division de frecuencias.

Info

Publication number
ES2041683T3
ES2041683T3 ES198787303969T ES87303969T ES2041683T3 ES 2041683 T3 ES2041683 T3 ES 2041683T3 ES 198787303969 T ES198787303969 T ES 198787303969T ES 87303969 T ES87303969 T ES 87303969T ES 2041683 T3 ES2041683 T3 ES 2041683T3
Authority
ES
Spain
Prior art keywords
signals
digital
closed loop
video signals
reference 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 - Lifetime
Application number
ES198787303969T
Other languages
English (en)
Inventor
Alvin Reuben Balaban
Leopold Albert Harwood
Chandrakant Bhailalbhai Patel
Walter Heinrich Demmer
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 ES2041683T3 publication Critical patent/ES2041683T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/44—Colour synchronisation
    • H04N9/455—Generation of colour burst signals; Insertion of colour burst signals in colour picture signals or separation of colour burst signals from colour picture signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Analogue/Digital Conversion (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Picture Signal Circuits (AREA)
  • Color Television Systems (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Laser Beam Processing (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

EN LA FORMA DESCRITA DEL INVENTO, UN RECEPTOR DE TELEVISION DIGITAL QUE TIENE UN RELOJ (CK) INCLUYE UN PRIMER BUCLE CERRADO DE FASE DIGITAL (232-252) QUE REGENERA LA FASE DE CUADRATURA RELATIVA A LAS SEÑALES SUBPORTADORAS QUE SE USAN PARA DEMODULAR SINCRONICAMENTE (232,234) LOSCOMPONENTES DE LA SEÑAL DE CROMINANCIA DE SEÑALES DE VIDEO COMPUESTAS EN SEÑALES DE INFORMACION DE COLOR. CUANDO SEÑALES DE VIDEO NO STANDARD SE PROCESAN POR EL RECEPTOR, LA FRECUENCIA ESTABILIZADA EN LA SEÑAL DE RELOJ PUEDE PROVOCAR QUE LA INFORMACION DE COLOR SEA DISTORSIONADA. PARA COMPENSAR ESTA DISTORSION, UN SEGUNDO BUCLE CERRADO DE FASE (300) SE SINCRONIZA A UNA SEÑAL DE REFERENCIA GENERADA POR UN OSCILADOR ANALOGO (310). LA SEÑAL DE REFERENCIA ANALOGA SE SUMA LINEALMENTE (314) A SEÑALES DE VIDEO ANALOGAS DE BANDA DE BASE. LAS SEÑALES COMBINADAS SE DIGITALIZAN MEDIANTE UN CONVERTIDOR ANALOGICO DIGITAL (211) Y SE FILTRAN ENTONCES POR FILTROS DE PASO BAJO Y FILTROS DE PASO DE BANDA (301,304) PARA DESARROLLAR LAS SEÑALES DIGITALES QUE REPRESENTAN LAS SEÑALES DE VIDEO Y LA SEÑAL DE REFERENCIA RESPECTIVAMENTE. LA SEÑAL DE REFERENCIA DIGITAL SE USA PARA SINCRONIZAR EL SEGUNDO BUCLE CERRADO DE FASE (300), LAS SEÑALES DE CONTROL DEL CUAL SE USAN PARA COMPENSAR (328) EL PRIMER BUCLE CERRADO DE FASE (232-252) PARA LAS INESTABILIDADES DE FRECUENCIA EN LAS SEÑALES DE RELOJ. MAS GENERALMENTE, EL INVENTO CONTEMPLA EL USO DE UN CONVERTIDOR ANALOGICO DIGITAL PARA DIGITALIZAR SEÑALES ANALOGICAS COMBINADAS QUE OCUPAN BANDAS DE FRECUENCIA DIFERENTES, ESTANDO SEPARADAS LAS SEÑALES DIGITALIZADAS POR FILTRADO ANTES DE SER SUMINISTRADAS A LOS RESPECTIVOS CIRCUITOS DE UTILIZACION O PROCESO.
ES198787303969T 1986-05-02 1987-05-01 Convertidor de analogico a digital multiplexado por division de frecuencias. Expired - Lifetime ES2041683T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/858,720 US4703340A (en) 1986-05-02 1986-05-02 Frequency division multiplexed analog to digital converter

Publications (1)

Publication Number Publication Date
ES2041683T3 true ES2041683T3 (es) 1993-12-01

Family

ID=25329003

Family Applications (1)

Application Number Title Priority Date Filing Date
ES198787303969T Expired - Lifetime ES2041683T3 (es) 1986-05-02 1987-05-01 Convertidor de analogico a digital multiplexado por division de frecuencias.

Country Status (10)

Country Link
US (1) US4703340A (es)
EP (1) EP0245060B1 (es)
JP (1) JP2587633B2 (es)
KR (1) KR950004116B1 (es)
AT (1) ATE91584T1 (es)
AU (1) AU597969B2 (es)
CA (1) CA1246206A (es)
DE (1) DE3786488T2 (es)
ES (1) ES2041683T3 (es)
FI (1) FI84127C (es)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5227794A (en) * 1991-12-23 1993-07-13 Ford Motor Company Frequency multiplexed analog-digital conversion
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
US5327132A (en) * 1992-11-23 1994-07-05 Ford Motor Company Composite signal generation and decoding in digital signal processing automotive audio system
KR950003284B1 (ko) * 1993-03-12 1995-04-07 삼성전자 주식회사 영상신호의 주파수변조(fm) 장치 및 그 자동조정 방법
US5808691A (en) * 1995-12-12 1998-09-15 Cirrus Logic, Inc. Digital carrier synthesis synchronized to a reference signal that is asynchronous with respect to a digital sampling clock
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
US5796392A (en) * 1997-02-24 1998-08-18 Paradise Electronics, Inc. Method and apparatus for clock recovery in a digital display unit
JPH10336487A (ja) * 1997-06-02 1998-12-18 Sony Corp アナログ／ディジタル変換回路
US6380980B1 (en) * 1997-08-25 2002-04-30 Intel Corporation Method and apparatus for recovering video color subcarrier signal
US6330034B1 (en) * 1997-10-31 2001-12-11 Texas Instruments Incorporated Color phase-locked loop for video decoder
DE10111402B4 (de) * 2001-03-09 2006-01-19 Harman Becker Automotive Systems (Becker Division) Gmbh Verfahren und Phasenregelkreis zur Synchronisation auf einen in einem Nutzsignal enthaltenen Hilfsträger
US7080169B2 (en) * 2001-12-11 2006-07-18 Emulex Design & Manufacturing Corporation Receiving data from interleaved multiple concurrent transactions in a FIFO memory having programmable buffer zones
US20070206712A1 (en) * 2002-03-11 2007-09-06 Stefan Gierl Phase-locked loop for synchronization with a subcarrier contained in an intelligence signal
US7330217B1 (en) * 2004-10-20 2008-02-12 Cirrus Logic, Inc. Chroma phase error correction circuitry and methods and systems utilizing the same
US8212942B2 (en) * 2010-04-14 2012-07-03 Newport Media, Inc. All digital front-end architecture for television with sigma-delta ADC input

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4514760A (en) * 1983-02-17 1985-04-30 Rca Corporation Digital television receiver with time-multiplexed analog-to-digital converter
US4562456A (en) * 1983-10-17 1985-12-31 Rca Corporation Analog-to-digital conversion apparatus including a circuit to substitute calculated values when the dynamic range of the converter is exceeded
JPS60111591A (ja) * 1983-11-21 1985-06-18 Victor Co Of Japan Ltd カラ−映像信号の記録方法及び記録再生方法
US4626894A (en) * 1984-10-04 1986-12-02 Rca Corporation Signal filtering system having adaptively cascaded filter stages for developing a variable bandwidth frequency characteristic
AU594649B2 (en) * 1984-10-19 1990-03-15 Stephens, John D. Fetal anatomic sex assignment by ultrasonography during early pregnancy
US4635102A (en) * 1984-10-24 1987-01-06 Rca Corporation Chroma signal amplitude control apparatus

Also Published As

Publication number Publication date
AU7216487A (en) 1987-11-05
KR870011799A (ko) 1987-12-26
AU597969B2 (en) 1990-06-14
EP0245060A2 (en) 1987-11-11
ATE91584T1 (de) 1993-07-15
DE3786488D1 (de) 1993-08-19
FI84127C (fi) 1991-10-10
JP2587633B2 (ja) 1997-03-05
DE3786488T2 (de) 1994-02-10
FI84127B (fi) 1991-06-28
CA1246206A (en) 1988-12-06
EP0245060A3 (en) 1990-10-10
FI871806A (fi) 1987-11-03
KR950004116B1 (ko) 1995-04-25
JPS62272696A (ja) 1987-11-26
US4703340A (en) 1987-10-27
EP0245060B1 (en) 1993-07-14
FI871806A0 (fi) 1987-04-24

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