DE68905930T2 - Automatische irisblenden- und gamma-korrektur-einrichtung in abhaengigkeit von einem videosignal. - Google Patents

Automatische irisblenden- und gamma-korrektur-einrichtung in abhaengigkeit von einem videosignal.

Info

Publication number
DE68905930T2
DE68905930T2 DE8989100476T DE68905930T DE68905930T2 DE 68905930 T2 DE68905930 T2 DE 68905930T2 DE 8989100476 T DE8989100476 T DE 8989100476T DE 68905930 T DE68905930 T DE 68905930T DE 68905930 T2 DE68905930 T2 DE 68905930T2
Authority
DE
Germany
Prior art keywords
video signal
correction device
gamma correction
device depending
automatic iris
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
DE8989100476T
Other languages
English (en)
Other versions
DE68905930D1 (de
Inventor
Toshinobu Ing Haruki
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
Priority claimed from JP63004344A external-priority patent/JPH01180189A/ja
Priority claimed from JP63043711A external-priority patent/JP2527592B2/ja
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Publication of DE68905930D1 publication Critical patent/DE68905930D1/de
Application granted granted Critical
Publication of DE68905930T2 publication Critical patent/DE68905930T2/de
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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Devices (AREA)
  • Exposure Control For Cameras (AREA)
DE8989100476T 1988-01-12 1989-01-12 Automatische irisblenden- und gamma-korrektur-einrichtung in abhaengigkeit von einem videosignal. Expired - Lifetime DE68905930T2 (de)

Applications Claiming Priority (2)

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

Publications (2)

Publication Number Publication Date
DE68905930D1 DE68905930D1 (de) 1993-05-19
DE68905930T2 true DE68905930T2 (de) 1993-07-22

Family

ID=26338093

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8989100476T Expired - Lifetime DE68905930T2 (de) 1988-01-12 1989-01-12 Automatische irisblenden- und gamma-korrektur-einrichtung in abhaengigkeit von einem videosignal.

Country Status (6)

Country Link
US (3) US5079622A (de)
EP (1) EP0326825B1 (de)
KR (1) KR970010207B1 (de)
AU (1) AU607033B2 (de)
CA (1) CA1333821C (de)
DE (1) DE68905930T2 (de)

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US4969045A (en) * 1988-05-20 1990-11-06 Sanyo Electric Co., Ltd. Image sensing apparatus having automatic iris function of automatically adjusting exposure in response to video signal
JPH031772A (ja) * 1989-05-30 1991-01-08 Sony Corp 撮像装置
US5111301A (en) * 1989-06-28 1992-05-05 Sanyo Electric Co., Ltd. Automatic exposure adjusting apparatus for automatically adjusting exposure by fuzzy inference
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JP2822256B2 (ja) * 1990-02-15 1998-11-11 ソニー株式会社 ビデオカメラの露光補正装置
FR2658686B1 (fr) * 1990-02-16 1992-06-19 Izs Procede de regulation automatique d'une camera a couplage de charge et camera pour sa mise en óoeuvre.
US5194960A (en) * 1990-03-05 1993-03-16 Konica Corporation Optical image signal control device
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US5223921A (en) * 1990-04-27 1993-06-29 Sanyo Electric Co., Ltd. White balance adjusting apparatus for automatically adjusting white balance on the basis of a color information signal obtained from an image-sensing device
JPH0440754A (ja) * 1990-06-07 1992-02-12 Matsushita Electric Ind Co Ltd 信号変換装置
EP0470769B1 (de) * 1990-08-08 1996-04-10 Canon Kabushiki Kaisha Elektronische Stehbild-Videokamera
JP2839202B2 (ja) * 1990-09-04 1998-12-16 株式会社日立製作所 撮像装置の自動露光制御装置及び方法
JP2766067B2 (ja) * 1990-10-31 1998-06-18 キヤノン株式会社 撮像装置
JPH04334177A (ja) * 1991-05-09 1992-11-20 Matsushita Electric Ind Co Ltd 逆光補正付撮像装置
US5831676A (en) * 1992-08-19 1998-11-03 Canon Kabushiki Kaisha Image pickup device using plural control parameters for exposure control
US5410225A (en) * 1991-08-30 1995-04-25 Aiwa Co., Ltd. Video camera and camera system employing aperture control
JP3170722B2 (ja) * 1991-09-03 2001-05-28 株式会社ニコン 露出演算装置
US5333011A (en) * 1991-12-05 1994-07-26 Sensormatic Electronics Corporation Electronic iris control for surveillance cameras
JP2725933B2 (ja) * 1992-01-31 1998-03-11 三洋電機株式会社 オートフォーカス装置
US5345264A (en) * 1992-02-27 1994-09-06 Sanyo Electric Co., Ltd. Video signal processing circuit for a video camera using a luminance signal
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
US5621462A (en) * 1992-08-18 1997-04-15 Canon Kabushiki Kaisha Image pickup device capable of controlling made pickup operation
US5654533A (en) * 1992-10-26 1997-08-05 Kabushiki Kaisha Tec Apparatus and method for reading two-dimensional symbols
EP0613294B1 (de) * 1993-02-24 1998-10-28 Matsushita Electric Industrial Co., Ltd. Vorrichtung zur Gradationskorrektur und Bildaufnahmegerät mit einer solchen Vorrichtung
DE69433374T2 (de) * 1993-09-17 2004-10-07 Canon Kk Bildaufnahmegerät
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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US4050085A (en) * 1969-06-04 1977-09-20 Hughes Aircraft Company Automatic light control system
GB2047415B (en) * 1979-02-28 1983-10-12 Nippon Kogaku Kk Photometric multi-metering device
US4306787A (en) * 1979-11-22 1981-12-22 Nippon Kogaku K.K. Exposure control apparatus for camera provided with multi metering device
JPS5741079A (en) * 1980-08-26 1982-03-06 Asahi Optical Co Ltd Automatic television camera exposure device by division of picture
US4443080A (en) * 1980-11-12 1984-04-17 Nippon Kogaku K.K. Exposure control apparatus based on multimetering system
JPS5797275A (en) * 1980-12-08 1982-06-16 Sony Corp Television camera
US4429969A (en) * 1981-04-10 1984-02-07 Nippon Kogaku K. K. Exposure control device of camera for flash exposure
JPS5820096A (ja) * 1981-07-29 1983-02-05 Toshiba Corp デイジタルガンマ補正回路
JPS5827472A (ja) * 1981-08-10 1983-02-18 Sony Corp 固体撮像装置の制御装置
JPS58130676A (ja) * 1982-01-29 1983-08-04 Toshiba Corp ガンマ補正回路
JPS5981992A (ja) * 1982-11-02 1984-05-11 Canon Inc カラ−撮像装置
US4546248A (en) * 1983-09-08 1985-10-08 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Wide dynamic range video camera
JPS60139080A (ja) * 1983-12-27 1985-07-23 Canon Inc 画像処理装置
JPS60167576A (ja) * 1984-01-31 1985-08-30 Canon Inc 撮像装置
US4719511A (en) * 1984-04-04 1988-01-12 Asahi Kogaku Kogyo Kabushiki Kaisha Exposure controlling method for television camera
US4675738A (en) * 1984-09-17 1987-06-23 Canon Kabushiki Kaisha Image pickup device
JPH0411432Y2 (de) * 1985-03-30 1992-03-23
JPH07118786B2 (ja) * 1985-11-08 1995-12-18 松下電器産業株式会社 撮像装置
JPH0771209B2 (ja) * 1986-06-13 1995-07-31 三洋電機株式会社 オ−トフォ−カス回路
JPS62296673A (ja) * 1986-06-16 1987-12-23 Matsushita Electric Works Ltd 自動絞り調整機能付きテレビカメラ
US4843476A (en) * 1986-11-25 1989-06-27 Matsushita Electric Industrial Co., Ltd. System for controlling the amount of light reaching an image pick-up apparatus based on a brightness/darkness ratio weighing
US4969045A (en) * 1988-05-20 1990-11-06 Sanyo Electric Co., Ltd. Image sensing apparatus having automatic iris function of automatically adjusting exposure in response to video signal
JPH02131085A (ja) * 1988-11-11 1990-05-18 Fuji Photo Film Co Ltd 電子スチルカメラ

Also Published As

Publication number Publication date
EP0326825A1 (de) 1989-08-09
AU2835889A (en) 1989-07-13
KR890012488A (ko) 1989-08-26
EP0326825B1 (de) 1993-04-14
DE68905930D1 (de) 1993-05-19
KR970010207B1 (en) 1997-06-23
US5065247A (en) 1991-11-12
CA1333821C (en) 1995-01-03
US5079622A (en) 1992-01-07
AU607033B2 (en) 1991-02-21
US5036400A (en) 1991-07-30

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