KR880009516A - 휘도 신호 형성 회로 - Google Patents

휘도 신호 형성 회로 Download PDF

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Publication number
KR880009516A
KR880009516A KR1019880000055A KR880000055A KR880009516A KR 880009516 A KR880009516 A KR 880009516A KR 1019880000055 A KR1019880000055 A KR 1019880000055A KR 880000055 A KR880000055 A KR 880000055A KR 880009516 A KR880009516 A KR 880009516A
Authority
KR
South Korea
Prior art keywords
luminance signal
luminance
forming circuit
signal forming
gamma characteristic
Prior art date
Application number
KR1019880000055A
Other languages
English (en)
Other versions
KR960016851B1 (ko
Inventor
도시하루 곤도
Original Assignee
오오가 노리오
소니 가부시끼 가이샤
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 오오가 노리오, 소니 가부시끼 가이샤 filed Critical 오오가 노리오
Publication of KR880009516A publication Critical patent/KR880009516A/ko
Application granted granted Critical
Publication of KR960016851B1 publication Critical patent/KR960016851B1/ko

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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
    • H04N5/20—Circuitry for controlling amplitude response
    • H04N5/202—Gamma control
    • 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
    • H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
    • H04N9/69—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits for modifying the colour signals by gamma correction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80—Camera processing pipelines; Components thereof
    • H04N23/84—Camera processing pipelines; Components thereof for processing colour signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/10—Circuitry of solid-state image sensors [SSIS]; Control thereof for transforming different wavelengths into image signals
    • H04N25/11—Arrangement of colour filter arrays [CFA]; Filter mosaics
    • H04N25/13—Arrangement of colour filter arrays [CFA]; Filter mosaics characterised by the spectral characteristics of the filter elements
    • H04N25/135—Arrangement of colour filter arrays [CFA]; Filter mosaics characterised by the spectral characteristics of the filter elements based on four or more different wavelength filter elements
    • H04N25/136—Arrangement of colour filter arrays [CFA]; Filter mosaics characterised by the spectral characteristics of the filter elements based on four or more different wavelength filter elements using complementary colours

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Processing Of Color Television Signals (AREA)
  • Color Television Image Signal Generators (AREA)
  • Picture Signal Circuits (AREA)
  • Studio Devices (AREA)

Abstract

내용 없음.

Description

휘도 신호 형성 회로
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 1 도는 본 발명의 실시예를 도시하는 블록도.

Claims (1)

  1. 보색 필터를 가지는 카메라의 출력신호를 매트릭스 청산해서 제1의 휘도 신호를 만듬과 동시에, 상기 제1 및 제2의 휘도 신호의 평균 레벨이 클때엔, 상기 제1의 휘도 신호를 제1의 감마 특성을 가지게 해서 도출하고, 상기 제1 및 제2의 휘도 신호의 평균레벨이 작을 때에는 상기 제2의 휘도 신호를 상기 제1의 감마 특성보다 완만한 제2의 감마 특성을 가지게 해서 도출되도록 한 것을 특징으로 하는 휘도 신호 형성 회로.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019880000055A 1987-01-09 1988-01-08 휘도 신호 형성 회로 KR960016851B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2868 1987-01-09
JP62002868A JPH0810940B2 (ja) 1987-01-09 1987-01-09 輝度信号形成回路
JP62-2868 1987-01-09

Publications (2)

Publication Number Publication Date
KR880009516A true KR880009516A (ko) 1988-09-15
KR960016851B1 KR960016851B1 (ko) 1996-12-21

Family

ID=11541336

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880000055A KR960016851B1 (ko) 1987-01-09 1988-01-08 휘도 신호 형성 회로

Country Status (6)

Country Link
US (1) US4833527A (ko)
JP (1) JPH0810940B2 (ko)
KR (1) KR960016851B1 (ko)
DE (1) DE3800363C2 (ko)
GB (1) GB2200012B (ko)
HK (1) HK72494A (ko)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2614850B2 (ja) * 1986-09-25 1997-05-28 ソニー株式会社 撮像信号処理回路
US4903121A (en) * 1987-05-14 1990-02-20 Matsushita Electric Industrial Co., Ltd. Image pick up apparatus having pixel compensation circuit
US5283634A (en) * 1987-06-18 1994-02-01 Canon Kabushiki Kaisha Luminance signal correcting method
JPH01196978A (ja) * 1988-01-30 1989-08-08 Fuji Photo Film Co Ltd 書類撮影用ビデオカメラ
JP2594627B2 (ja) * 1988-02-26 1997-03-26 オリンパス光学工業株式会社 電子内視鏡装置
JPH02107091A (ja) * 1988-10-17 1990-04-19 Hitachi Ltd ビデオカメラの信号処理回路
US5581298A (en) * 1988-11-09 1996-12-03 Canon Kabushiki Kaisha Color signal processing apparatus using plural luminance signals
US5008741A (en) * 1989-04-07 1991-04-16 Tektronix, Inc. Method and apparatus for processing component signals to preserve high frequency intensity information
US5534948A (en) * 1989-08-15 1996-07-09 Rank Cintel Limited Method and apparatus for reducing the effect of alias components produced through non-linear digital signal processing, such as gamma correction, by selective attenuation
JP3035930B2 (ja) * 1989-10-19 2000-04-24 ソニー株式会社 カラー固体撮像装置
KR920006601Y1 (ko) * 1989-12-31 1992-09-21 삼성전자 주식회사 보색 필터 ccd를 이용한 원색 신호 출력회로
JPH044675A (ja) * 1990-04-23 1992-01-09 Canon Inc 電子カメラ
US5734424A (en) * 1990-08-08 1998-03-31 Canon Kabushiki Kaisha Image pickup apparatus capable of providing moving video signal and still video signal
JP3263924B2 (ja) * 1990-09-14 2002-03-11 ソニー株式会社 カラー撮像装置
JP2748678B2 (ja) * 1990-10-09 1998-05-13 松下電器産業株式会社 階調補正方法および階調補正装置
JP2547686B2 (ja) * 1991-06-21 1996-10-23 三洋電機株式会社 映像信号処理回路
CA2095756C (en) * 1992-08-14 2001-04-24 Albert D. Edgar Method and apparatus for linear color processing
JP3666886B2 (ja) * 1992-12-28 2005-06-29 キヤノン株式会社 撮像装置
US5345265A (en) * 1992-12-31 1994-09-06 Samsung Electronics Co., Ltd. Gamma correction circuit for a video camera
US6636646B1 (en) * 2000-07-20 2003-10-21 Eastman Kodak Company Digital image processing method and for brightness adjustment of digital images
JP4654545B2 (ja) * 2001-07-11 2011-03-23 パナソニック株式会社 単板式カラー撮像装置
US7583303B2 (en) * 2005-01-31 2009-09-01 Sony Corporation Imaging device element
JP4265546B2 (ja) * 2005-01-31 2009-05-20 ソニー株式会社 撮像装置、画像処理装置および画像処理方法
GB0503545D0 (en) * 2005-02-21 2005-03-30 E2V Tech Uk Ltd Low light level colour camera
CN101322416B (zh) * 2006-03-20 2010-10-13 索尼株式会社 图像信号处理装置及图像信号处理方法
CN103327219B (zh) * 2012-03-21 2016-12-14 浙江大华技术股份有限公司 一种视频图像对比度调整方法及装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2117909B1 (ko) * 1970-12-16 1976-12-03 Fernseh Gmbh
JPS60240282A (ja) * 1984-05-15 1985-11-29 Matsushita Electric Ind Co Ltd 映像信号合成装置
US4697208A (en) * 1985-06-13 1987-09-29 Olympus Optical Co., Ltd. Color image pickup device with complementary color type mosaic filter and gamma compensation means
AU599139B2 (en) * 1986-09-27 1990-07-12 Sony Corporation Luminance signal forming circuit

Also Published As

Publication number Publication date
JPS63171090A (ja) 1988-07-14
GB2200012B (en) 1990-12-05
JPH0810940B2 (ja) 1996-01-31
HK72494A (en) 1994-08-05
DE3800363C2 (de) 1999-04-22
KR960016851B1 (ko) 1996-12-21
GB8800314D0 (en) 1988-02-10
US4833527A (en) 1989-05-23
DE3800363A1 (de) 1988-07-21
GB2200012A (en) 1988-07-20

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