ES2075150T3 - Sistema procesador de audioseñales. - Google Patents

Sistema procesador de audioseñales.

Info

Publication number
ES2075150T3
ES2075150T3 ES90303779T ES90303779T ES2075150T3 ES 2075150 T3 ES2075150 T3 ES 2075150T3 ES 90303779 T ES90303779 T ES 90303779T ES 90303779 T ES90303779 T ES 90303779T ES 2075150 T3 ES2075150 T3 ES 2075150T3
Authority
ES
Spain
Prior art keywords
sound
signal
video
carrier
processing system
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
ES90303779T
Other languages
English (en)
Inventor
Mark Francis Rumreich
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.)
Technicolor USA Inc
Original Assignee
Thomson Consumer Electronics Inc
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 Thomson Consumer Electronics Inc filed Critical Thomson Consumer Electronics Inc
Application granted granted Critical
Publication of ES2075150T3 publication Critical patent/ES2075150T3/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
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
    • H04N5/62—Intercarrier circuits, i.e. heterodyning sound and vision carriers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Circuits Of Receivers In General (AREA)
  • Selective Calling Equipment (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Noise Elimination (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Superheterodyne Receivers (AREA)
  • Television Signal Processing For Recording (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

EN UN SISTEMA DE PROCESAMIENTO DE SEÑAL DE TELEVISION, LA SEÑAL DE IMAGEN SE DETECTA MEDIANTE UN DETECTOR DE CUASI-SINCRONISMO (60) EN EL QUE LA ONDA PORTADORA DE IMAGEN TIENE AMPLITUD LIMITADA (98) Y CAJA DE VIDEO FILTRADA (110) PARA INSERTARSE EN EL MEZCLADOR DE VIDEO PARA DERIVAR LA SEÑAL DE VIDEO COMPUESTA. EL CANAL DE SONIDO CONSTA DE UN CIRCUITO SINTONIZADO RESONANTE PARALELO (80) QUE FORMA UN FILTRO DE PASO DE BANDA CON UN PASO DE BANDA CENTRADO EN LA FRECUENCIA DE LA ONDA PORTADORA DE SONIDO. LA ONDA PORTADORA DE SONIDO MODULADO SE ALIMENTA EN UN DETECTOR DE SONIDO (84) QUE SE ALIMENTA TAMBIEN POR LA MISMA SEÑAL DE LA ONDA PORTADORA DE IMAGEN FILTRADA PROPORCIONADA POR LA CAJA DE VIDEO (110) PARA SUMINISTRAR LA SEÑAL DE SONIDO DE LA ONDA INTERPORTADORA DE 4.5 MHZ.
ES90303779T 1989-04-13 1990-04-09 Sistema procesador de audioseñales. Expired - Lifetime ES2075150T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/337,710 US4974087A (en) 1989-04-13 1989-04-13 Parallel sound if with reference carrier derived from quasi-synchronous video detector

Publications (1)

Publication Number Publication Date
ES2075150T3 true ES2075150T3 (es) 1995-10-01

Family

ID=23321685

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90303779T Expired - Lifetime ES2075150T3 (es) 1989-04-13 1990-04-09 Sistema procesador de audioseñales.

Country Status (15)

Country Link
US (1) US4974087A (es)
EP (1) EP0392772B1 (es)
JP (1) JP2814290B2 (es)
KR (1) KR0163952B1 (es)
CN (1) CN1024243C (es)
AT (1) ATE126416T1 (es)
AU (1) AU625120B2 (es)
CA (1) CA2010669C (es)
DE (1) DE69021427T2 (es)
DK (1) DK0392772T3 (es)
ES (1) ES2075150T3 (es)
FI (1) FI97668C (es)
MY (1) MY105274A (es)
PT (1) PT93746B (es)
TR (1) TR27599A (es)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5177613A (en) * 1990-02-26 1993-01-05 Thomson Consumer Electronics, Inc. Quasi-parallel if with shared saw filter
US5142370A (en) * 1990-08-23 1992-08-25 Thomson Consumer Electronics, Inc. Interrupting the video if signal path during fm radio mode in a television receiver
US5305109A (en) * 1992-09-08 1994-04-19 Samsung Electronics Co., Ltd. Parallel untuned video if amplifiers supplied signals from TV 1st detector via respective input filters
DE4315128A1 (de) * 1993-05-07 1994-11-10 Philips Patentverwaltung Schaltungsanordnung zum Demodulieren der Tonsignale in einem Fernsehsignal
US5337091A (en) * 1993-07-01 1994-08-09 Samsung Electronics Co., Ltd. Video IF amplifier with auxiliary IF amplifier for intercarrier sound & AFT
DE4332161A1 (de) * 1993-09-22 1995-03-23 Thomson Brandt Gmbh Hochfrequenzempfänger
US5418578A (en) * 1993-12-27 1995-05-23 Harris Corporation Precorrecting an aural carrier signal in a common amplifier system
KR0151414B1 (ko) * 1993-12-30 1998-10-15 김광호 영상처리 시스템의 자동이득 조절회로
JP3612224B2 (ja) 1998-11-27 2005-01-19 アルプス電気株式会社 テレビジョン信号受信チューナー
EP1005155B1 (en) * 1998-11-27 2005-03-16 Alps Electric Co., Ltd. Television signal receiving tuner
SG92689A1 (en) * 2000-03-27 2002-11-19 Koninkl Philips Electronics Nv Automatic gain control
KR100446945B1 (ko) * 2002-12-03 2004-09-01 엘지이노텍 주식회사 일정한 출력 레벨을 갖는 무조정 튜너
US8330873B2 (en) * 2007-03-14 2012-12-11 Larry Silver Signal demodulator with overmodulation protection
US8902365B2 (en) * 2007-03-14 2014-12-02 Lance Greggain Interference avoidance in a television receiver
US8477248B2 (en) 2007-07-09 2013-07-02 Sigmatel, Inc. System and method of demodulating audio signals
CN104469082A (zh) * 2014-12-12 2015-03-25 成都中远信电子科技有限公司 一种小型家用液晶显示器标清图像放大器

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5235517A (en) * 1975-09-12 1977-03-18 Matsushita Electric Ind Co Ltd Tv receiver
US4237485A (en) * 1978-01-19 1980-12-02 Matsushita Electric Industrial Co., Ltd. Buzz cancelling system for television receiver
US4199787A (en) * 1978-11-17 1980-04-22 Rca Corporation Intercarrier sound system
DE2919904C2 (de) * 1979-05-17 1981-12-17 Standard Elektrik Lorenz Ag, 7000 Stuttgart Fernsehempfänger mit Tonsignalverarbeitung nach dem Differenzträgerverfahren mit parallel angeordneten Verstärkern für Bild- und Tonzwischenfrequenz
US4263611A (en) * 1979-08-29 1981-04-21 Rca Corporation Television signal processing system
US4353093A (en) * 1981-05-11 1982-10-05 Rca Corporation Impulse noise reduction system for TV receivers
JPS58104578A (ja) * 1981-12-16 1983-06-22 Sony Corp テレビジヨン受像機の音声回路
US4470070A (en) * 1982-08-30 1984-09-04 Rca Corporation Frequency translation phase-locked loop television sound detection system
US4514763A (en) * 1982-10-29 1985-04-30 Rca Corporation Sound signal and impulse noise detector for television receivers
JPS5966281A (ja) * 1982-10-06 1984-04-14 Mitsubishi Electric Corp 音声第１検波装置
US4513323A (en) * 1982-11-30 1985-04-23 Rca Corporation Buzz reduction for intercarrier type television sound detection
US4602288A (en) * 1983-11-21 1986-07-22 Zenith Electronics Corporation Intermediate frequency saw filter with nyquist phase modulation correction
US4660088A (en) * 1983-11-29 1987-04-21 Rca Corporation Quasi-parallel television if suitable for stereo sound reception
JPS60117882A (ja) * 1983-11-29 1985-06-25 Mitsubishi Electric Corp テレビジヨン受像機
JPS61230484A (ja) * 1985-04-04 1986-10-14 Alps Electric Co Ltd Ｃａｔｖコンバ−タ
US4639786A (en) * 1985-10-23 1987-01-27 Rca Corporation Television sound signal processor
US4718086A (en) * 1986-03-27 1988-01-05 Rca Corporation AGC in sound channel of system for processing a scrambled video signal
US4716464A (en) * 1986-04-30 1987-12-29 Rca Corporation Single channel if for video and audio
US4742293A (en) * 1987-04-06 1988-05-03 Hughes Aircraft Company Pseudo-memory circuit for testing for stuck open faults

Also Published As

Publication number Publication date
AU5314190A (en) 1990-10-18
EP0392772A3 (en) 1991-12-04
CN1046429A (zh) 1990-10-24
FI901759A0 (fi) 1990-04-06
MY105274A (en) 1994-09-30
FI97668C (fi) 1997-01-27
PT93746A (pt) 1991-10-31
DE69021427T2 (de) 1996-04-04
DE69021427D1 (de) 1995-09-14
DK0392772T3 (da) 1995-09-18
CA2010669C (en) 1999-12-28
ATE126416T1 (de) 1995-08-15
CA2010669A1 (en) 1990-10-13
KR0163952B1 (ko) 1999-01-15
AU625120B2 (en) 1992-07-02
JP2814290B2 (ja) 1998-10-22
TR27599A (tr) 1995-06-13
US4974087A (en) 1990-11-27
EP0392772B1 (en) 1995-08-09
KR900017373A (ko) 1990-11-16
FI97668B (fi) 1996-10-15
JPH02288779A (ja) 1990-11-28
EP0392772A2 (en) 1990-10-17
CN1024243C (zh) 1994-04-13
PT93746B (pt) 1997-10-31

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