ES8403686A1 - Un circuito de grabar y reproducir senales de croma en un aparato de grabacion y reproduccion magneticas. - Google Patents

Un circuito de grabar y reproducir senales de croma en un aparato de grabacion y reproduccion magneticas.

Info

Publication number
ES8403686A1
ES8403686A1 ES517934A ES517934A ES8403686A1 ES 8403686 A1 ES8403686 A1 ES 8403686A1 ES 517934 A ES517934 A ES 517934A ES 517934 A ES517934 A ES 517934A ES 8403686 A1 ES8403686 A1 ES 8403686A1
Authority
ES
Spain
Prior art keywords
circuit
frequency
signal
chroma signal
recording
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
Application number
ES517934A
Other languages
English (en)
Other versions
ES517934A0 (es
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 JP56195687A external-priority patent/JPS5897992A/ja
Priority claimed from JP57022703A external-priority patent/JPS58141090A/ja
Priority claimed from JP57081402A external-priority patent/JPS58198981A/ja
Priority claimed from JP57150763A external-priority patent/JPS5941992A/ja
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of ES517934A0 publication Critical patent/ES517934A0/es
Publication of ES8403686A1 publication Critical patent/ES8403686A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/923—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback using preemphasis of the signal before modulation and deemphasis of the signal after demodulation
    • 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
    • H04N9/793—Processing of colour television signals in connection with recording for controlling the level of the chrominance signal, e.g. by means of automatic chroma control circuits
    • H04N9/7933—Processing of colour television signals in connection with recording for controlling the level of the chrominance signal, e.g. by means of automatic chroma control circuits the level control being frequency-dependent
    • 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
    • H04N9/793—Processing of colour television signals in connection with recording for controlling the level of the chrominance signal, e.g. by means of automatic chroma control circuits
    • H04N9/7933—Processing of colour television signals in connection with recording for controlling the level of the chrominance signal, e.g. by means of automatic chroma control circuits the level control being frequency-dependent
    • H04N9/7936—Processing of colour television signals in connection with recording for controlling the level of the chrominance signal, e.g. by means of automatic chroma control circuits the level control being frequency-dependent by using a preemphasis network at the recording side and a deemphasis network at the reproducing side
    • 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
    • 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
    • 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
    • H04N9/87—Regeneration of colour television signals
    • H04N9/898—Regeneration of colour television signals using frequency multiplication of the reproduced colour signal carrier with another auxiliary reproduced signal, e.g. a pilot signal carrier

Abstract

3(57)CIRCUITO DE GRABAR Y REPRODUCIR SEÑALES DE CROMA EN APARATOS DE VIDEO.EL CIRCUITO COMPRENDE: UN CIRCUITO DE GRABAR SEÑALES DE CROMA, QUE INCLUYE BASICAMENTE UN PRIMER CIRCUITO DE CONTROL AUTOMATICO DE COLOR (11) Y UN PRIMER CONVERTIDOR DE FRECUENCIA (12) CONECTADO A CONTINUACION DE ESTE; Y UN CIRCUITO REPRODUCTOR DE SEÑALES DE CROMA, QUE INCLUYE BASICAMENTE UN SEGUNDO CIRCUITO (26) DE CONTROL AUTOMATICO DE COLOR, UN SEGUNDO CONVERTIDOR DE FRECUENCIA (27) CONECTADO A CONTINUACION DEL MISMO, UN FILTRO DE PEINE (29) CONECTADO A CONTINUACION DEL SEGUNDO CONVERTIDOR DE FRECUENCIA,Y UN CIRCUITO DE DESACENTUACION (23) CONECTADO A CONTINUACION DEL FILTRO DE PEINE.
ES517934A 1981-12-07 1982-12-06 Un circuito de grabar y reproducir senales de croma en un aparato de grabacion y reproduccion magneticas. Expired ES8403686A1 (es)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP56195687A JPS5897992A (ja) 1981-12-07 1981-12-07 クロマ信号の再生装置
JP57022703A JPS58141090A (ja) 1982-02-17 1982-02-17 磁気記録装置
JP57081402A JPS58198981A (ja) 1982-05-17 1982-05-17 クロマ信号記録再生装置
JP57150763A JPS5941992A (ja) 1982-09-01 1982-09-01 クロマ信号記録再生回路

Publications (2)

Publication Number Publication Date
ES517934A0 ES517934A0 (es) 1984-03-16
ES8403686A1 true ES8403686A1 (es) 1984-03-16

Family

ID=27457816

Family Applications (1)

Application Number Title Priority Date Filing Date
ES517934A Expired ES8403686A1 (es) 1981-12-07 1982-12-06 Un circuito de grabar y reproducir senales de croma en un aparato de grabacion y reproduccion magneticas.

Country Status (7)

Country Link
US (1) US4524380A (es)
EP (1) EP0081198B1 (es)
KR (1) KR850001025B1 (es)
BR (1) BR8207076A (es)
CA (1) CA1201804A (es)
DE (1) DE3276562D1 (es)
ES (1) ES8403686A1 (es)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4612585A (en) * 1982-09-10 1986-09-16 Hitachi, Ltd. Chrominance signal recording and reproducing apparatus
JPS5997294A (ja) * 1982-11-27 1984-06-05 Toshiba Corp 映像信号記録再生装置
JPS59158684A (ja) * 1983-03-01 1984-09-08 Victor Co Of Japan Ltd 映像信号記録再生装置
JPS6030296A (ja) * 1983-07-29 1985-02-15 Victor Co Of Japan Ltd 映像信号記録装置及び映像信号記録再生装置
JPS6030295A (ja) * 1983-07-29 1985-02-15 Victor Co Of Japan Ltd 搬送色信号の記録再生装置
JPS60113301A (ja) * 1983-11-25 1985-06-19 Victor Co Of Japan Ltd 記録再生装置
JPS61191688U (es) * 1985-05-20 1986-11-28
JPS6218881A (ja) * 1985-07-18 1987-01-27 Fuji Photo Film Co Ltd フイ−ルド／フレ−ム変換方式
EP0253296B1 (en) * 1986-07-17 1992-12-02 Sanyo Electric Co., Ltd. Frequency converter for video tape recorder
JPS641393A (en) * 1987-06-23 1989-01-05 Victor Co Of Japan Ltd Voltage control type comb-line filter
DE3856426T2 (de) * 1987-10-08 2001-03-08 Victor Company Of Japan Videobandrecorder mit einer Schaltungsanordnung für die Phasenverschiebung des Farbträgers
JPH0734594B2 (ja) * 1987-11-27 1995-04-12 株式会社日立製作所 テレビジョン信号の記録再生装置
US5200834A (en) * 1988-03-30 1993-04-06 Nec Home Electronics Ltd. Magnetic recording and reproducing apparatus obtaining separate clock signals from brightness and color components of a video signal
KR920007491Y1 (ko) * 1989-12-31 1992-10-15 삼성전자 주식회사 고화질 영상 기록회로
JP2685996B2 (ja) * 1991-04-23 1997-12-08 ローム株式会社 Ｖｔｒの色信号処理回路
JPH05168041A (ja) * 1991-12-16 1993-07-02 Sony Corp 映像信号記録装置
CN1051899C (zh) * 1992-10-28 2000-04-26 三星电子株式会社 色同步脉冲检波系统
JP3290225B2 (ja) * 1993-01-13 2002-06-10 トウシバビデオプロダクツ プライベート リミテッド 自動利得調整回路
KR100188921B1 (ko) * 1994-07-26 1999-06-01 김광호 8밀리 비디오테이프레코더의 간이 하이-밴드 기록변조회로
JPH11186875A (ja) * 1997-12-24 1999-07-09 Sony Corp フイルタ回路
DE102004025645A1 (de) * 2004-05-24 2005-12-29 Jenoptik Laser, Optik, Systeme Gmbh Verfahren zur Reduzierung von Farbmoire in digitalen Bildern

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3816848A (en) * 1972-03-29 1974-06-11 Magnavox Co Automatic focus control for image pickup devices
FR2272562B1 (es) * 1974-05-21 1978-08-04 Thomson Brandt
JPS5247319A (en) * 1975-10-13 1977-04-15 Victor Co Of Japan Ltd Recording/reproducing system of color video signal
JPS5350919A (en) * 1976-10-20 1978-05-09 Sony Corp Video signal recorder unit
US4220964A (en) * 1977-11-21 1980-09-02 Sony Corporation Secam recording and reproducing system
FR2419632B1 (fr) * 1978-03-08 1986-02-28 Sanyo Electric Co Procede et dispositif d'enregistrement de signaux de chrominance " secam "
US4263612A (en) * 1979-08-01 1981-04-21 Rca Corporation Comb filter equalization circuit
US4240105A (en) * 1979-08-20 1980-12-16 Yves C. Faroudja Method and apparatus for separation of chrominance and luminance with adaptive comb filtering in a quadrature modulated color television system

Also Published As

Publication number Publication date
BR8207076A (pt) 1983-10-11
KR850001025B1 (ko) 1985-07-18
EP0081198A2 (en) 1983-06-15
EP0081198B1 (en) 1987-06-10
ES517934A0 (es) 1984-03-16
EP0081198A3 (en) 1984-08-22
US4524380A (en) 1985-06-18
DE3276562D1 (en) 1987-07-16
CA1201804A (en) 1986-03-11
KR840003177A (ko) 1984-08-13

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19990201