WO2008129885A1 - 出力制御回路、および撮像装置 - Google Patents

出力制御回路、および撮像装置 Download PDF

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Publication number
WO2008129885A1
WO2008129885A1 PCT/JP2008/050828 JP2008050828W WO2008129885A1 WO 2008129885 A1 WO2008129885 A1 WO 2008129885A1 JP 2008050828 W JP2008050828 W JP 2008050828W WO 2008129885 A1 WO2008129885 A1 WO 2008129885A1
Authority
WO
WIPO (PCT)
Prior art keywords
voltage value
value
judgments
output signal
section
Prior art date
Application number
PCT/JP2008/050828
Other languages
English (en)
French (fr)
Inventor
Masami Funabashi
Original Assignee
Panasonic Corporation
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 Panasonic Corporation filed Critical Panasonic Corporation
Priority to US12/595,786 priority Critical patent/US20100110231A1/en
Priority to JP2009510797A priority patent/JPWO2008129885A1/ja
Publication of WO2008129885A1 publication Critical patent/WO2008129885A1/ja

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
    • H04N5/18—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit
    • H04N5/185—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit for the black level
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
    • H04N25/63—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to dark current

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Picture Signal Circuits (AREA)

Abstract

　格納部(101)は、デジタル値を格納する。補正部(102)は、格納部(101)に格納されたデジタル値に応じて増幅回路(2)のオフセット電圧を制御する。判定部(103)は、増幅回路(2)からの出力信号(S2)の電圧値と基準電圧値との高低関係を判定する。調整部(104)は、判定部(103)によるｋ回の判定結果のうち出力信号の電圧値が基準電圧値よりも高いと判定された回数が出力信号の電圧値が基準電圧値よりも低いと判定された回数よりも多い場合には格納部(101)のデジタル値に正の値を加算する。一方、調整部(104)は、出力信号の電圧値が基準電圧値よりも低いと判定された回数が出力信号の電圧値が基準電圧値よりも高いと判定された回数よりも多い場合には格納部(101)のデジタル値に負の値を加算する。
PCT/JP2008/050828 2007-04-13 2008-01-22 出力制御回路、および撮像装置 WO2008129885A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/595,786 US20100110231A1 (en) 2007-04-13 2008-01-22 Output control circuit and imaging device
JP2009510797A JPWO2008129885A1 (ja) 2007-04-13 2008-01-22 出力制御回路、および撮像装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-106274 2007-04-13
JP2007106274 2007-04-13

Publications (1)

Publication Number Publication Date
WO2008129885A1 true WO2008129885A1 (ja) 2008-10-30

Family

ID=39875415

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/050828 WO2008129885A1 (ja) 2007-04-13 2008-01-22 出力制御回路、および撮像装置

Country Status (3)

Country Link
US (1) US20100110231A1 (ja)
JP (1) JPWO2008129885A1 (ja)
WO (1) WO2008129885A1 (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8305474B2 (en) * 2008-03-21 2012-11-06 STMicroelectronics (R&D) Ltd. Analog-to-digital conversion in image sensors
EP2104234B1 (en) * 2008-03-21 2011-08-31 STMicroelectronics Limited Analog-to-digital conversion in image sensors
JP2011071730A (ja) * 2009-09-25 2011-04-07 Toshiba Corp 黒レベル調整装置および黒レベル調整方法
WO2011148860A1 (ja) * 2010-05-24 2011-12-01 日本電気株式会社 信号処理方法、情報処理装置、及び信号処理プログラム
JP6649806B2 (ja) * 2016-03-02 2020-02-19 キヤノン株式会社 信号処理装置、撮像装置及び制御装置、信号処理方法及び制御方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0646287A (ja) * 1992-07-24 1994-02-18 Matsushita Electric Ind Co Ltd 映像信号フィードバッククランプ回路
JPH0738777A (ja) * 1993-07-16 1995-02-07 Sony Corp ディジタル・ペデスタル・クランパ
JP2000156796A (ja) * 1998-11-19 2000-06-06 Nec Corp 直流成分再生装置
JP2001057651A (ja) * 1999-08-18 2001-02-27 Mitsubishi Electric Corp 画像入力装置
JP2001282220A (ja) * 2000-03-29 2001-10-12 Nec Viewtechnology Ltd 映像判別回路及び自動画質調整装置
JP2003348464A (ja) * 2002-05-30 2003-12-05 Sony Corp 撮像信号処理方法、撮像信号処理装置、撮像装置
JP2004180070A (ja) * 2002-11-28 2004-06-24 Renesas Technology Corp データスライス装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6940548B2 (en) * 1998-07-15 2005-09-06 Texas Instruments Incorporated Analog optical black clamping circuit for a charge coupled device having wide programmable gain range
US6750910B1 (en) * 1998-07-15 2004-06-15 Texas Instruments Incorporated Optical black and offset correction in CCD signal processing
US6166668A (en) * 1999-06-01 2000-12-26 Motorola, Inc. Method and apparatus for providing DC offset correction and hold capability
US6356217B1 (en) * 2000-02-29 2002-03-12 Motorola, Inc. Enhanced DC offset correction through bandwidth and clock speed selection
US7259787B2 (en) * 2003-03-27 2007-08-21 Eastman Kodak Company Digital black clamp circuit in electronic imaging systems
US7750955B2 (en) * 2004-08-31 2010-07-06 Canon Kabushiki Kaisha Image signal processing apparatus, image signal processing method and camera using the image signal processing apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0646287A (ja) * 1992-07-24 1994-02-18 Matsushita Electric Ind Co Ltd 映像信号フィードバッククランプ回路
JPH0738777A (ja) * 1993-07-16 1995-02-07 Sony Corp ディジタル・ペデスタル・クランパ
JP2000156796A (ja) * 1998-11-19 2000-06-06 Nec Corp 直流成分再生装置
JP2001057651A (ja) * 1999-08-18 2001-02-27 Mitsubishi Electric Corp 画像入力装置
JP2001282220A (ja) * 2000-03-29 2001-10-12 Nec Viewtechnology Ltd 映像判別回路及び自動画質調整装置
JP2003348464A (ja) * 2002-05-30 2003-12-05 Sony Corp 撮像信号処理方法、撮像信号処理装置、撮像装置
JP2004180070A (ja) * 2002-11-28 2004-06-24 Renesas Technology Corp データスライス装置

Also Published As

Publication number Publication date
JPWO2008129885A1 (ja) 2010-07-22
US20100110231A1 (en) 2010-05-06

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