KR920001972A - 휘도/색신호 전처리장치 - Google Patents

휘도/색신호 전처리장치 Download PDF

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Publication number
KR920001972A
KR920001972A KR1019900009099A KR900009099A KR920001972A KR 920001972 A KR920001972 A KR 920001972A KR 1019900009099 A KR1019900009099 A KR 1019900009099A KR 900009099 A KR900009099 A KR 900009099A KR 920001972 A KR920001972 A KR 920001972A
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KR
South Korea
Prior art keywords
signal
digital
luminance
signals
analog
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KR1019900009099A
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English (en)
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KR0170630B1 (ko
Inventor
정태윤
Original Assignee
강진구
삼성전자 주식회사
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Application filed by 강진구, 삼성전자 주식회사 filed Critical 강진구
Priority to KR1019900009099A priority Critical patent/KR0170630B1/ko
Priority to JP3058234A priority patent/JP3034067B2/ja
Priority to US07/670,233 priority patent/US5220413A/en
Publication of KR920001972A publication Critical patent/KR920001972A/ko
Application granted granted Critical
Publication of KR0170630B1 publication Critical patent/KR0170630B1/ko

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
    • 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
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/08—Separation of synchronising signals from picture 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
    • H04N9/642—Multi-standard receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
    • H04N9/78—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter
    • 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

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

Abstract

내용 없음

Description

휘도/색신호 전처리장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 의한 휘도/색신호 전처리장치의 개요도.
제2도는 본 발명에 의한 휘도/색신호 전처리장치에 채용된 PLL부의 개요도.
제3도는 본 발명에 의한 휘도/색신호 전처리장치에 채용된 휘도 및 색신호분리부의 개요도.

Claims (3)

  1. 복합영상신호 형태로 입력되는 NTSC신호를 일정 주파수로 표본화하여 디지틀신호로 변환하는 아날로그/디지틀 변환부(10)와, 상기 NTSC신호에서 수평 동기 신호를 분리하는 수평동기 분리부(20)와, 상기 수평동기분리부(20)에서 출력되는 수평동기 신호에 고정된 클럭신호를 상기 아날로그/디지틀 변환부(10)로 전송하는 PLL부(30)와, 상기 아날로그/디지틀 변환부(10)에서 전송되는 디지틀 신호를 휘도와 색신호로 분리하는 휘도 및 색신호 분리부(40)를 포함하여 구성됨을 특징으로 하는 휘도/색신호 전처리장치.
  2. 제1항에 있어서, PLL부(30)는 상기 수평동기 분리부(20)에서 분리된 수평동기신호를 듀티 50%의 15.734kHz 신호로 변환시키는 멀티 바이브레이터(30a)와, 13.5MHz의 발진주파수를 858 분주하여 그 분주주파수인 15.734kHz를 출력하는 분주기(30b)와, 상기 멀티 바이브레이터(30a)와 분주기(30b)의 출력 신호 위상을 비교하여 그 비교값을 출력하는 위상비교기(30c)와, 상기 위상비교기(30c)에서 출력되는 비교값을 필터링하는 저역통과필터(30d)와, 상기 분주기(30d)에 13.5MHz의 발진주파수를 전송하고 저역통과필터(30d)에서 필터링된 신호를 동기화시켜 13.5MHz의 클럭신호를 아날로그/디지틀 변환부(10)로 전송하는 VCO(30e)를 구비함을 특징으로 하는 휘도/색신호 전처리장치.
  3. 제1항에 있어서, 휘도 및 색신호 분리부(40)는 상기 PLL부(30)에서 발생하는 13.5MHz의 클럴신호에 아날로그/디지틀 변환부(10)의 디지틀 신호를 동기시켜 메모리하는 1,2라인메모리(40a,40b)와, 상기 아날로그/디지틀 변환부(10)와, 1,2라인메모리(40a,40b)의 출력단에서 전송되는 각각의 디지틀 데이타에 응답하여 휘도 및 색신호를 빗살형으로 필터링된 신호로 분리하기 위한 빗살형 필터(40c)와, 상기 빗살형 필터(40c)에서 필터링된 신호중 색도 신호를 통과시키는 대역통과필터(40d)와, 상기 제1라인메모리(40a)에서 출력되는 신호를 일정시간 지연시키는 지연부(40e)와, 상기 대역통과필터(40d)와 지연부(40e)에서 각각 출력되는 신호를 합산하는 합산부(40f)와, 상기 대역통과필터(40d)를 통과한 색도신호를 Cos, Sin의 신호성분을 각각 합하여 출력하는 제1,2멀티 플라이어(40g, 40h)와, 상기 합산부(40f) 및 제1,2멀티 플라이어(40g,40h)의 출력단에서 각각 전송되는 신호를 필터링하여 휘도(Y)와 색도(R-Y, B-Y)신호를 출력하는 제1,2,3저역통과필터(40i, 40j, 40k)를 구비함을 특징으로 하는 휘도/색신호 전처리장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900009099A 1990-06-20 1990-06-20 휘도/색신호 전처리장치 KR0170630B1 (ko)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019900009099A KR0170630B1 (ko) 1990-06-20 1990-06-20 휘도/색신호 전처리장치
JP3058234A JP3034067B2 (ja) 1990-06-20 1991-02-28 輝度／色信号前処理装置
US07/670,233 US5220413A (en) 1990-06-20 1991-03-15 Device for a compatible luminance/chrominance separation between different standard video signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019900009099A KR0170630B1 (ko) 1990-06-20 1990-06-20 휘도/색신호 전처리장치

Publications (2)

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KR920001972A true KR920001972A (ko) 1992-01-30
KR0170630B1 KR0170630B1 (ko) 1999-03-20

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US (1) US5220413A (ko)
JP (1) JP3034067B2 (ko)
KR (1) KR0170630B1 (ko)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3263791B2 (ja) * 1992-09-30 2002-03-11 ソニー株式会社 Ｙｃ分離回路
US5483292A (en) * 1994-03-09 1996-01-09 Samsung Electronics Co., Ltd. Symbol clock regeneration in digital signal receivers for recovering digital data buried in NTSC TV signals
US5777679A (en) * 1996-03-15 1998-07-07 International Business Machines Corporation Video decoder including polyphase fir horizontal filter
US5786866A (en) 1996-10-15 1998-07-28 Fairchild Semiconductor Corporation Video color subcarrier signal generator
KR100268150B1 (ko) * 1997-05-29 2000-10-16 윤종용 복합 영상신호의 동기 신호 재생 회로
JP4638613B2 (ja) * 2001-01-30 2011-02-23 旭化成エレクトロニクス株式会社 Ｙ／ｃ分離回路
DE112004001627B4 (de) * 2003-08-29 2010-07-29 Mitsubishi Denki K.K. Videosignal-Verarbeitungsschaltung, Videosignal-Anzeigevorrichtung und Videosignal-Aufzeichnungsvorrichtung
US7492415B2 (en) * 2004-02-05 2009-02-17 Broadcom Corporation Method and system for data compression for storage of 3D comb filter data
CN102263964B (zh) * 2010-05-31 2014-04-09 北京创毅视讯科技有限公司 一种移动模拟电视图像稳定显示的方法和装置

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US4672488A (en) * 1984-08-22 1987-06-09 Wright Harold T Spindle hub-disc interface
US4916526A (en) * 1986-01-31 1990-04-10 Yves C. Faroudja Bandwidth control for chrominance and luminance paths in quadrature modulated color television system
JPH0832059B2 (ja) * 1987-03-09 1996-03-27 株式会社日立製作所 ディジタルテレビジョン信号処理装置
US4791488A (en) * 1987-08-12 1988-12-13 Rca Licensing Corporation Line-locked clock signal generation system
JP2601840B2 (ja) * 1987-09-30 1997-04-16 株式会社東芝 映像表示装置
US5012329A (en) * 1989-02-21 1991-04-30 Dubner Computer Systems, Inc. Method of encoded video decoding
US5028887A (en) * 1989-08-31 1991-07-02 Qualcomm, Inc. Direct digital synthesizer driven phase lock loop frequency synthesizer with hard limiter
US5021754A (en) * 1990-07-16 1991-06-04 Motorola, Inc. Fractional-N synthesizer having modulation spur compensation

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JP3034067B2 (ja) 2000-04-17
US5220413A (en) 1993-06-15
KR0170630B1 (ko) 1999-03-20
JPH05244636A (ja) 1993-09-21

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