ES2136336T3 - Demodulador de señales de color para receptores de television tipo pal y secam. - Google Patents

Demodulador de señales de color para receptores de television tipo pal y secam.

Info

Publication number
ES2136336T3
ES2136336T3 ES96104608T ES96104608T ES2136336T3 ES 2136336 T3 ES2136336 T3 ES 2136336T3 ES 96104608 T ES96104608 T ES 96104608T ES 96104608 T ES96104608 T ES 96104608T ES 2136336 T3 ES2136336 T3 ES 2136336T3
Authority
ES
Spain
Prior art keywords
signals
demodulated
pal
signal
secam
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
ES96104608T
Other languages
English (en)
Inventor
Ikuo Osawa
Keijiro Ueki
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
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
Priority claimed from JP07198495A external-priority patent/JP3244398B2/ja
Priority claimed from JP07198595A external-priority patent/JP3253482B2/ja
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Application granted granted Critical
Publication of ES2136336T3 publication Critical patent/ES2136336T3/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
    • H04N9/642—Multi-standard receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
    • H04N11/12—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only
    • H04N11/14—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system
    • H04N11/16—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system the chrominance signal alternating in phase, e.g. PAL-system

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

LAS SEÑALES DE TELEVISION DE TIPO PAL SUMINISTRAN UNA SEÑAL B-Y QUE SE DEMODULAN MEDIANTE PRIMER DEMODULADOR (2) Y UNA SEÑAL R-Y QUE SE DEMODULA MEDIANTE UN SEGUNDO DEMODULADOR (3). UN IMPULSO ADICIONAL QUE TIENE UNA TENSION DADA SE AÑADE A LA SEÑAL B-Y DEMODULADA EN UN PUNTO DADO. POR OTRA PARTE, LAS SEÑALES DE TELEVISION DE TIPO SECAM SUMINISTRAN SEÑALES R-Y Y B-Y QUE SON SECUENCIALMENTE DEMODULADAS MEDIANTE UN DEMODULADOR SECAM (104) PARA CADA LINEA HORIZONTAL. UN IMPULSO ADICIONAL QUE TIENE UNA TENSION DADA SE AÑADE A LA SEÑAL B-Y DEMODULADA EN UN PUNTO DADO. PARA AMBAS SEÑALES DE TELEVISION PAL Y SECAM, LAS SEÑALES DEMODULADAS SON RETARDADAS MEDIANTE UN PRIMER Y UN SEGUNDO CCD''S (8, 9) POR UN PERIODO DE BARRIDO HORIZONTAL. SE SUMINISTRAN UN PRIMER Y UN SEGUNDO CIRCUITO ALC PARA REGULAR EL NIVEL DE TENSION DEL IMPULSO ADICIONAL A SU NIVEL INICIAL. SE SUMINISTRAN UN PRIMER Y UN SEGUNDO SUMADOR (14, 15) PARA AÑADIR LAS SEÑALES RETARDADAS REGULADAS EN NIVEL A LAS SEÑALES NO RETARDADAS PARASUMINISTRAR SEÑALES DE DIFERENCIA DE COLOR DEMODULADAS APROPIADAMENTE B-Y Y R-Y. EN EL SISTEMA PAL, NINGUNO DE LOS COMPONENTE INNECESARIOS DEBIDO A LA DESVIACION DE FASE EN LA SEÑAL DE LA PORTADORA PUEDE CANCELARSE APROPIADAMENTE. EN EL SISTEMA SECAM, EL NIVEL DE LAS SEÑALES DE DIFERENCIA DE COLOR EN UNA LINEA HORIZONTAL FORMADA POR LAS SEÑALES RETARDADAS PUEDE IGUALARSE CON EL NIVEL DE LAS SEÑALES DE DIFERENCIA DE COLOR EN LAS SEÑALES NO RETARDADAS.
ES96104608T 1995-03-29 1996-03-22 Demodulador de señales de color para receptores de television tipo pal y secam. Expired - Lifetime ES2136336T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP07198495A JP3244398B2 (ja) 1995-03-29 1995-03-29 Ｐａｌ方式の色信号復調回路
JP07198595A JP3253482B2 (ja) 1995-03-29 1995-03-29 色信号復調回路

Publications (1)

Publication Number Publication Date
ES2136336T3 true ES2136336T3 (es) 1999-11-16

Family

ID=26413108

Family Applications (1)

Application Number Title Priority Date Filing Date
ES96104608T Expired - Lifetime ES2136336T3 (es) 1995-03-29 1996-03-22 Demodulador de señales de color para receptores de television tipo pal y secam.

Country Status (5)

Country Link
EP (1) EP0735779B1 (es)
KR (1) KR100406451B1 (es)
CN (1) CN1100445C (es)
DE (1) DE69604107T2 (es)
ES (1) ES2136336T3 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007097019A (ja) * 2005-09-30 2007-04-12 Sanyo Electric Co Ltd 遅延回路及びそれを用いた映像信号処理回路
JP2007097020A (ja) * 2005-09-30 2007-04-12 Sanyo Electric Co Ltd 遅延回路及びそれを用いた映像信号処理回路
CN106855583B (zh) * 2015-12-09 2020-02-21 比亚迪股份有限公司 用于图像传感器的方法和装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0364225B1 (en) * 1988-10-12 1996-03-27 Canon Kabushiki Kaisha Color signal processing apparatus
US5272522A (en) * 1990-04-30 1993-12-21 Thomson Consumer Electronics, Inc. Video signal processing circuits
KR940001436B1 (ko) * 1991-08-20 1994-02-23 삼성전자 주식회사 색상조절회로

Also Published As

Publication number Publication date
DE69604107D1 (de) 1999-10-14
KR960036811A (ko) 1996-10-28
EP0735779B1 (en) 1999-09-08
EP0735779A1 (en) 1996-10-02
KR100406451B1 (ko) 2004-03-18
DE69604107T2 (de) 2000-04-13
CN1139863A (zh) 1997-01-08
CN1100445C (zh) 2003-01-29

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