ES2071635T3 - Circuito de procesamiento de la señal de crominancia y grabador de cinta de video con funcion de procesamiento de la señal de crominancia. - Google Patents

Circuito de procesamiento de la señal de crominancia y grabador de cinta de video con funcion de procesamiento de la señal de crominancia.

Info

Publication number
ES2071635T3
ES2071635T3 ES89117321T ES89117321T ES2071635T3 ES 2071635 T3 ES2071635 T3 ES 2071635T3 ES 89117321 T ES89117321 T ES 89117321T ES 89117321 T ES89117321 T ES 89117321T ES 2071635 T3 ES2071635 T3 ES 2071635T3
Authority
ES
Spain
Prior art keywords
signal
chrominance signal
circuit
phase change
frequency
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
ES89117321T
Other languages
English (en)
Inventor
Yuzou Yasuda
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
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Application granted granted Critical
Publication of ES2071635T3 publication Critical patent/ES2071635T3/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
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/83—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal
    • H04N9/84—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal the recorded signal showing a feature, which is different in adjacent track parts, e.g. different phase or frequency

Landscapes

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

Abstract

UN CIRCUITO DE PROCESAMIENTO DE SEÑAL DE CROMINANCIA DE MAGNETOSCOPIO COMPRENDE UN PRIMER CIRCUITO CONVERTIDOR DE FRECUENCIA (3) PARA CONVERTIR UNA FRECUENCIA DE UNA SEÑAL DE CROMINANCIA EN UNA SEÑAL DE VIDEO. EL CIRCUITO DE CONVERSION DE FRECUENCIA MULTIPLICA UNA SEÑAL DE CROMINANCIA INTRODUCIDA Y UNA SEÑAL DE CUATRO FASES DE UN CIRCUITO DE CAMBIO DE FASE (29). POR OTRA PARTE, UN SEGUNDO CIRCUITO CONVERTIDOR DE FRECUENCIA (17) GENERA UNA SEÑAL DE 4 (FSC (MAS MENOS) 40 FH) MULTIPLICANDO UNA SALIDA OSCILANTE DE 4FSC DE UN PRIMER CIRCUITO DE OSCILACION Y UNA SALIDA OSCILANTE DE 160 FH QUE SE OBTIENE DIVIDIENDO POR 1/2 UNA FRECUENCIA DE UNA SALIDA DE 320FH DE VCO (26), Y SOLAMENTE UNA SEÑAL DE 4 (FSC + 40 FH) SE EXTRAE POR MEDIO DE BPF (28) PARA APLICARLA AL CIRCUITO DE CAMBIO DE FASE (29). EL CIRCUITO DE CAMBIO DE FASE (29) DIVIDE UNA FRECUENCIA DE LA SEÑAL POR 1/4 Y CAMBIA LA SEÑAL RESULTANTE EN 90 CADA PERIODO HORIZONTAL. DADO QUE UNA ENTRADA PARA UN CIRCUITO DE CAMBIO DE FASE ( 29) ES 4 (FSC + 40FH), SE PUEDE UTILIZAR UN CIRCUITO DE CAMBIO DE FASE DE ALTA PRECISION.
ES89117321T 1988-09-19 1989-09-19 Circuito de procesamiento de la señal de crominancia y grabador de cinta de video con funcion de procesamiento de la señal de crominancia. Expired - Lifetime ES2071635T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63234126A JPH0720264B2 (ja) 1988-09-19 1988-09-19 ビデオテープレコーダ

Publications (1)

Publication Number Publication Date
ES2071635T3 true ES2071635T3 (es) 1995-07-01

Family

ID=16966043

Family Applications (1)

Application Number Title Priority Date Filing Date
ES89117321T Expired - Lifetime ES2071635T3 (es) 1988-09-19 1989-09-19 Circuito de procesamiento de la señal de crominancia y grabador de cinta de video con funcion de procesamiento de la señal de crominancia.

Country Status (6)

Country Link
US (1) US5083213A (es)
EP (1) EP0360230B1 (es)
JP (1) JPH0720264B2 (es)
KR (1) KR0121290B1 (es)
DE (1) DE68921397T2 (es)
ES (1) ES2071635T3 (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5621537A (en) * 1989-11-02 1997-04-15 Mitsubishi Denki Kabushiki Kaisha Color signal processing circuit in color VTR
JPH04124990A (ja) * 1990-09-15 1992-04-24 Hitachi Ltd 周波数信号処理回路
JPH05161162A (ja) * 1991-12-10 1993-06-25 Toshiba Corp 自動位相制御回路
JP3323611B2 (ja) * 1993-06-25 2002-09-09 株式会社日立製作所 Ｖｔｒ用周波数変換装置
EP0690633B1 (en) * 1994-06-30 2000-03-08 SANYO ELECTRIC Co., Ltd. Video signal reproduction apparatus for chrominance signals
US5987209A (en) * 1994-08-05 1999-11-16 Funai Electric Co., Ltd. Video signal receiver in which a reference signal is shared by a PLL circuit which sets the output frequency of a local RF-IF oscillator and by the chrominance signal generator
US6347179B1 (en) * 1994-08-05 2002-02-12 Funai Electric Co., Ltd. Video signal processor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4110761A (en) * 1975-12-12 1978-08-29 Hitachi, Ltd. Color signal processing apparatus for video signal recording and reproducing system
JPS5717292A (en) * 1980-07-04 1982-01-28 Hitachi Ltd Chroma signal processing reproducing device
US4490749A (en) * 1980-11-22 1984-12-25 Victor Company Of Japan, Ltd. Color video signal recording and/or reproducing system
US4754340A (en) * 1983-11-01 1988-06-28 Matsushita Electric Industrial Co., Ltd. Method of reproducing a chrominance signal from a previously low-range-converted chrominance signal using comb filtering and sampling
JPS60153079U (ja) * 1984-03-19 1985-10-12 三洋電機株式会社 カラ−映像信号記録再生装置
KR900006490B1 (ko) * 1984-10-12 1990-09-01 마쯔시다덴기산교 가부시기가이샤 색신호 처리장치
JP2503546B2 (ja) * 1987-11-02 1996-06-05 三菱電機株式会社 搬送色信号の周波数低域変換装置

Also Published As

Publication number Publication date
EP0360230A2 (en) 1990-03-28
KR0121290B1 (ko) 1997-11-17
US5083213A (en) 1992-01-21
DE68921397D1 (de) 1995-04-06
JPH0720264B2 (ja) 1995-03-06
EP0360230A3 (en) 1992-03-18
EP0360230B1 (en) 1995-03-01
KR900005810A (ko) 1990-04-14
DE68921397T2 (de) 1995-10-26
JPH0282788A (ja) 1990-03-23

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