DE3780998D1 - Schaltung zur schwarzwertkorrektur fuer videokamera. - Google Patents

Schaltung zur schwarzwertkorrektur fuer videokamera.

Info

Publication number
DE3780998D1
DE3780998D1 DE8787104885T DE3780998T DE3780998D1 DE 3780998 D1 DE3780998 D1 DE 3780998D1 DE 8787104885 T DE8787104885 T DE 8787104885T DE 3780998 T DE3780998 T DE 3780998T DE 3780998 D1 DE3780998 D1 DE 3780998D1
Authority
DE
Germany
Prior art keywords
circuit
video camera
value correction
black value
black
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
DE8787104885T
Other languages
English (en)
Other versions
DE3780998T2 (de
Inventor
Hiroyuki Shouji
Eiji Tamura
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of DE3780998D1 publication Critical patent/DE3780998D1/de
Application granted granted Critical
Publication of DE3780998T2 publication Critical patent/DE3780998T2/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
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
    • 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
    • H04N23/81—Camera processing pipelines; Components thereof for suppressing or minimising disturbance in the image signal generation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Studio Devices (AREA)
  • Color Television Image Signal Generators (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
DE8787104885T 1986-04-08 1987-04-02 Schaltung zur schwarzwertkorrektur fuer videokamera. Expired - Lifetime DE3780998T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61080887A JPH0797830B2 (ja) 1986-04-08 1986-04-08 ビデオカメラの黒レベル補正回路

Publications (2)

Publication Number Publication Date
DE3780998D1 true DE3780998D1 (de) 1992-09-17
DE3780998T2 DE3780998T2 (de) 1992-12-24

Family

ID=13730855

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787104885T Expired - Lifetime DE3780998T2 (de) 1986-04-08 1987-04-02 Schaltung zur schwarzwertkorrektur fuer videokamera.

Country Status (7)

Country Link
US (1) US4786969A (de)
EP (1) EP0240937B1 (de)
JP (1) JPH0797830B2 (de)
KR (1) KR950006234B1 (de)
DE (1) DE3780998T2 (de)
HK (1) HK81095A (de)
SG (1) SG30626G (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6437174U (de) * 1987-08-28 1989-03-06
JPH01106677A (ja) * 1987-10-20 1989-04-24 Sony Corp 電荷転送素子の出力回路
US5010395A (en) * 1988-04-20 1991-04-23 Olympus Optical Co., Ltd. Solid state imaging apparatus
JPH02135981A (ja) * 1988-11-17 1990-05-24 Matsushita Electric Ind Co Ltd 受像機制御装置
US4912558A (en) * 1988-12-27 1990-03-27 Eastman Kodak Company Optical image to video transfer system having enhanced resolution and contrast for dark areas of the image
US5003564A (en) * 1989-04-04 1991-03-26 Rca Licensing Corporation Digital signal clamp circuitry
US4965669A (en) * 1989-04-12 1990-10-23 Rca Licensing Corporation Apparatus for digitally controlling the D.C. value of a processed signal
NL8901307A (nl) * 1989-05-25 1990-12-17 Philips Nv Omzetinrichting voor een foto-, dia- respektievelijk filmnegatief-televisie-omzetting.
US4984085A (en) * 1989-08-03 1991-01-08 Allen-Bradley Company, Inc. Image processor with dark current compensation
US5119224A (en) * 1989-12-14 1992-06-02 Fiber Options Corporation Apparatus and method for fiber optics communication with dark current correction
JPH03270567A (ja) * 1990-03-20 1991-12-02 Fuji Photo Film Co Ltd 画像信号補正方法
US5047863A (en) * 1990-05-24 1991-09-10 Polaroid Corporation Defect correction apparatus for solid state imaging devices including inoperative pixel detection
DE4117020C2 (de) * 1990-05-25 1993-12-02 Asahi Optical Co Ltd Steuervorrichtung für einen Bildsensor
JP2640042B2 (ja) * 1991-01-22 1997-08-13 三洋電機株式会社 オートフォーカスカメラ
US5329111A (en) * 1991-06-27 1994-07-12 Omron Corporation Image reader with adjustable contrast range
JP3153918B2 (ja) * 1991-09-30 2001-04-09 ソニー株式会社 固体撮像装置および遮光検出装置
US5410365A (en) * 1992-04-02 1995-04-25 Sony Corporation Video camera with coarse analog and fine digital black level adjustment
JP3221967B2 (ja) * 1993-03-31 2001-10-22 富士写真フイルム株式会社 撮像装置
US5659355A (en) * 1994-10-31 1997-08-19 Eastman Kodak Company CCD dark mean level correction circuit employing digital processing and analog subtraction requiring no advance knowledge of dark mean level
US7140766B2 (en) * 1999-08-04 2006-11-28 Given Imaging Ltd. Device, system and method for temperature sensing in an in-vivo device
JP3808349B2 (ja) * 2001-01-12 2006-08-09 三菱電機株式会社 黒レベル補正装置
US8436905B2 (en) * 2002-09-20 2013-05-07 Bae Systems Information And Electronic Systems Integration Inc. Front lens shutter mount for uniformity correction
KR100822849B1 (ko) * 2006-10-11 2008-04-17 주식회사 후후 카메라 블랙 레벨 보상 장치 및 그 방법

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6048955B2 (ja) * 1977-02-28 1985-10-30 ソニー株式会社 ホワイトバランス調整装置
NL175777C (nl) * 1977-05-27 1984-12-17 Nederlanden Staat Schakeling voor de eliminatie van de achtergrondhelderheidsvariatie van een videosignaal.
JPS57200965U (de) * 1981-06-15 1982-12-21
JPS5928769A (ja) * 1982-08-10 1984-02-15 Sony Corp スチルビデオカメラ
JPS59178080A (ja) * 1983-03-29 1984-10-09 Sony Corp 黒レベルの自動設定回路
JPS6043972A (ja) * 1983-08-22 1985-03-08 Sony Corp 映像の黒レベル再生回路
JPS60251778A (ja) * 1984-05-29 1985-12-12 Seiko Instr & Electronics Ltd ビデオ信号増幅回路

Also Published As

Publication number Publication date
SG30626G (en) 1995-09-01
JPS62236273A (ja) 1987-10-16
EP0240937B1 (de) 1992-08-12
KR870010737A (ko) 1987-11-30
US4786969A (en) 1988-11-22
EP0240937A2 (de) 1987-10-14
HK81095A (de) 1995-06-01
EP0240937A3 (en) 1989-04-26
JPH0797830B2 (ja) 1995-10-18
KR950006234B1 (ko) 1995-06-12
DE3780998T2 (de) 1992-12-24

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee