KR970010207B1 - Auto / ris / gamma correction apparatus in response to a video signal - Google Patents

Auto / ris / gamma correction apparatus in response to a video signal Download PDF

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Publication number
KR970010207B1
KR970010207B1 KR89000222A KR890000222A KR970010207B1 KR 970010207 B1 KR970010207 B1 KR 970010207B1 KR 89000222 A KR89000222 A KR 89000222A KR 890000222 A KR890000222 A KR 890000222A KR 970010207 B1 KR970010207 B1 KR 970010207B1
Authority
KR
South Korea
Prior art keywords
ris
auto
response
video signal
gamma correction
Prior art date
Application number
KR89000222A
Other languages
English (en)
Other versions
KR890012488A (ko
Inventor
Toshinobu Haruki
Original Assignee
Sanyo Electric Co
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 JP63004344A external-priority patent/JPH01180189A/ja
Priority claimed from JP63043711A external-priority patent/JP2527592B2/ja
Application filed by Sanyo Electric Co filed Critical Sanyo Electric Co
Publication of KR890012488A publication Critical patent/KR890012488A/ko
Application granted granted Critical
Publication of KR970010207B1 publication Critical patent/KR970010207B1/ko

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/71—Circuitry for evaluating the brightness variation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/75—Circuitry for compensating brightness variation in the scene by influencing optical camera components
    • 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
    • H04N23/82—Camera processing pipelines; Components thereof for controlling camera response irrespective of the scene brightness, e.g. gamma correction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Devices (AREA)
  • Exposure Control For Cameras (AREA)
KR89000222A 1988-01-12 1989-01-11 Auto / ris / gamma correction apparatus in response to a video signal KR970010207B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP63-4344 1988-01-12
JP63004344A JPH01180189A (ja) 1988-01-12 1988-01-12 撮像装置
JP63-43711 1988-02-15
JP63043711A JP2527592B2 (ja) 1988-02-25 1988-02-25 撮像装置

Publications (2)

Publication Number Publication Date
KR890012488A KR890012488A (ko) 1989-08-26
KR970010207B1 true KR970010207B1 (en) 1997-06-23

Family

ID=26338093

Family Applications (1)

Application Number Title Priority Date Filing Date
KR89000222A KR970010207B1 (en) 1988-01-12 1989-01-11 Auto / ris / gamma correction apparatus in response to a video signal

Country Status (6)

Country Link
US (3) US5036400A (ko)
EP (1) EP0326825B1 (ko)
KR (1) KR970010207B1 (ko)
AU (1) AU607033B2 (ko)
CA (1) CA1333821C (ko)
DE (1) DE68905930T2 (ko)

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JP3106006B2 (ja) * 1992-06-24 2000-11-06 キヤノン株式会社 電子スチルカメラ
JP2547941B2 (ja) * 1992-07-27 1996-10-30 インターナショナル・ビジネス・マシーンズ・コーポレイション 内容を検索基準とするナビゲーション機構を提供する方法及びそのための装置
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JP3495410B2 (ja) * 1994-03-16 2004-02-09 ペンタックス株式会社 データシンボル読み取り装置
JPH0823473A (ja) * 1994-07-05 1996-01-23 Canon Inc 撮像装置
US5539459A (en) * 1995-05-18 1996-07-23 Polaroid Corporation Optimal tone scale mapping in electronic cameras
US5926562A (en) * 1995-06-23 1999-07-20 Fuji Photo Film Co., Ltd. Image processing method using reference values to determine exposure state
US5745808A (en) * 1995-08-21 1998-04-28 Eastman Kodak Company Camera exposure control system using variable-length exposure tables
US5933199A (en) * 1995-09-15 1999-08-03 Lg Electronics Inc. Gamma correction circuit using analog multiplier
US6151073A (en) * 1996-03-28 2000-11-21 Fotonation, Inc. Intelligent camera flash system
JPH09284784A (ja) * 1996-04-12 1997-10-31 Sony Corp カラー撮像装置
US5734426A (en) * 1996-11-15 1998-03-31 Omnivision Technologies, Inc. Method of automatic exposure control in a MOS imaging array
JP3113835B2 (ja) 1997-03-14 2000-12-04 松下電器産業株式会社 撮像装置
US6906745B1 (en) 1998-04-23 2005-06-14 Micron Technology, Inc. Digital exposure circuit for an image sensor
KR100284305B1 (ko) * 1998-10-28 2001-03-02 김영환 이미지 센서에서 녹색 화소의 평균값을 이용하여 화면의 밝기를조절하기 위한 장치 및 방법
US6999126B2 (en) * 2001-09-17 2006-02-14 Mazzapica C Douglas Method of eliminating hot spot in digital photograph
US6970199B2 (en) * 2001-10-05 2005-11-29 Eastman Kodak Company Digital camera using exposure information acquired from a scene
JP3814514B2 (ja) * 2001-10-23 2006-08-30 キヤノン株式会社 画像表示装置、画像処理方法及びプログラム
JP2004048561A (ja) * 2002-07-15 2004-02-12 Fuji Photo Film Co Ltd 撮像装置及び測光装置
JP4269699B2 (ja) * 2003-01-24 2009-05-27 株式会社ニコン 電子カメラ
CN1299231C (zh) * 2004-06-11 2007-02-07 清华大学 活体虹膜图像采集方法及采集装置
CN100373927C (zh) * 2005-03-21 2008-03-05 王美娟 数字摄影装置的自动曝光方法
US8554011B2 (en) * 2011-06-07 2013-10-08 Microsoft Corporation Automatic exposure correction of images
US10321068B2 (en) 2017-09-13 2019-06-11 The United States Of America As Represented By The Secretary Of The Navy Image-based auto-iris

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FR2462692A1 (fr) * 1979-02-28 1981-02-13 Nippon Kogaku Kk Dispositif de mesure multiple du champ objet d'un appareil de prise de vues
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JPS5741079A (en) * 1980-08-26 1982-03-06 Asahi Optical Co Ltd Automatic television camera exposure device by division of picture
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JPH0771209B2 (ja) * 1986-06-13 1995-07-31 三洋電機株式会社 オ−トフォ−カス回路
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CA1309166C (en) * 1988-05-20 1992-10-20 Toshinobu Haruki Image sensing apparatus having automatic iris function of automatically adjusting exposure in response to video signal
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Also Published As

Publication number Publication date
AU607033B2 (en) 1991-02-21
US5079622A (en) 1992-01-07
DE68905930D1 (de) 1993-05-19
DE68905930T2 (de) 1993-07-22
KR890012488A (ko) 1989-08-26
EP0326825B1 (en) 1993-04-14
AU2835889A (en) 1989-07-13
CA1333821C (en) 1995-01-03
EP0326825A1 (en) 1989-08-09
US5065247A (en) 1991-11-12
US5036400A (en) 1991-07-30

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