JP4755743B2 - デジタル利得可制御型増幅器及び光ディスク読み取り装置 - Google Patents

デジタル利得可制御型増幅器及び光ディスク読み取り装置 Download PDF

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Publication number
JP4755743B2
JP4755743B2 JP28473299A JP28473299A JP4755743B2 JP 4755743 B2 JP4755743 B2 JP 4755743B2 JP 28473299 A JP28473299 A JP 28473299A JP 28473299 A JP28473299 A JP 28473299A JP 4755743 B2 JP4755743 B2 JP 4755743B2
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JP
Japan
Prior art keywords
output
current source
switches
current
control
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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 - Fee Related
Application number
JP28473299A
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English (en)
Japanese (ja)
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JP2000201037A5 (enExample
JP2000201037A (ja
Inventor
ドトリシュ ピエール
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Vantiva SA
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Thomson Multimedia SA
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Publication of JP2000201037A publication Critical patent/JP2000201037A/ja
Publication of JP2000201037A5 publication Critical patent/JP2000201037A5/ja
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Publication of JP4755743B2 publication Critical patent/JP4755743B2/ja
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0088—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using discontinuously variable devices, e.g. switch-operated
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0941—Methods and circuits for servo gain or phase compensation during operation

Landscapes

  • Analogue/Digital Conversion (AREA)
  • Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)
JP28473299A 1998-10-06 1999-10-05 デジタル利得可制御型増幅器及び光ディスク読み取り装置 Expired - Fee Related JP4755743B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9812495 1998-10-06
FR9812495A FR2784820B1 (fr) 1998-10-06 1998-10-06 Dispositif amplificateur a gain commandable numeriquement et appareil lecteur de disques optiques incorporant un tel dispositif

Publications (3)

Publication Number Publication Date
JP2000201037A JP2000201037A (ja) 2000-07-18
JP2000201037A5 JP2000201037A5 (enExample) 2006-11-24
JP4755743B2 true JP4755743B2 (ja) 2011-08-24

Family

ID=9531240

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28473299A Expired - Fee Related JP4755743B2 (ja) 1998-10-06 1999-10-05 デジタル利得可制御型増幅器及び光ディスク読み取り装置

Country Status (6)

Country Link
US (1) US6184752B1 (enExample)
EP (1) EP0993110B1 (enExample)
JP (1) JP4755743B2 (enExample)
CN (1) CN1158651C (enExample)
DE (1) DE69931231T2 (enExample)
FR (1) FR2784820B1 (enExample)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6756576B1 (en) * 2000-08-30 2004-06-29 Micron Technology, Inc. Imaging system having redundant pixel groupings
FR2820907A1 (fr) * 2001-02-13 2002-08-16 St Microelectronics Sa Circuit de normalisation a tension d'erreur reduite
JP3857123B2 (ja) * 2001-12-14 2006-12-13 シャープ株式会社 受光アンプ回路及びそれを用いた光ディスク記録再生装置
KR100524949B1 (ko) * 2003-02-27 2005-11-01 삼성전자주식회사 광디스크의 배속에 따라 증폭이득을 제어하는 광신호변환장치 및 그의 증폭이득 제어방법
JP4068590B2 (ja) * 2004-05-06 2008-03-26 株式会社東芝 電流電圧変換回路
JP2006279703A (ja) * 2005-03-30 2006-10-12 Matsushita Electric Ind Co Ltd 可変利得増幅器並びにそれを用いたミキサ及び直交変調器
CN100527609C (zh) * 2005-10-26 2009-08-12 威盛电子股份有限公司 可变增益放大电路及相关方法
JP4883674B2 (ja) * 2006-01-05 2012-02-22 株式会社山武 受光アンプ
US7643573B2 (en) * 2006-03-17 2010-01-05 Cirrus Logic, Inc. Power management in a data acquisition system
JP5924924B2 (ja) 2011-12-15 2016-05-25 キヤノン株式会社 電子回路
JP5812959B2 (ja) * 2011-12-15 2015-11-17 キヤノン株式会社 撮像装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940760A (en) * 1975-03-21 1976-02-24 Analog Devices, Inc. Digital-to-analog converter with current source transistors operated accurately at different current densities
US4064506A (en) * 1976-04-08 1977-12-20 Rca Corporation Current mirror amplifiers with programmable current gains
US4250461A (en) * 1979-04-20 1981-02-10 Rca Corporation Current mirror amplifier
US4439673A (en) * 1981-08-27 1984-03-27 Sprague Electric Company Two terminal integrated circuit light-sensor
US4485301A (en) * 1982-02-01 1984-11-27 Sprague Electric Company Linear two-terminal integrated circuit photo sensor
JPS61285808A (ja) * 1985-06-11 1986-12-16 Sharp Corp 電流増幅回路
JPH0348506A (ja) * 1989-04-19 1991-03-01 Nec Corp 電流可変回路
JP2882163B2 (ja) * 1992-02-26 1999-04-12 日本電気株式会社 比較器
JP2988795B2 (ja) * 1992-05-29 1999-12-13 シャープ株式会社 受光増幅装置
US5373253A (en) * 1993-09-20 1994-12-13 International Business Machines Corporation Monolithic current mirror circuit employing voltage feedback for β-independent dynamic range
WO1996007927A2 (en) 1994-09-01 1996-03-14 Philips Electronics N.V. Transconductance amplifier having a digitally variable transconductance as well as a variable gain stage and an automatic gain control circuit comprising such a variable gain stage
FR2733098B1 (fr) * 1995-04-11 1997-07-04 Sgs Thomson Microelectronics Amplificateur de courant
JPH1093436A (ja) * 1996-09-19 1998-04-10 Oki Electric Ind Co Ltd デジタル・アナログ変換回路
DE19644996A1 (de) 1996-10-30 1998-05-07 Thomson Brandt Gmbh Eingangssignalverstärker
US5753903A (en) * 1996-11-05 1998-05-19 Medar, Inc. Method and system for controlling light intensity in a machine vision system

Also Published As

Publication number Publication date
FR2784820A1 (fr) 2000-04-21
DE69931231D1 (de) 2006-06-14
US6184752B1 (en) 2001-02-06
CN1158651C (zh) 2004-07-21
EP0993110A1 (en) 2000-04-12
EP0993110B1 (en) 2006-05-10
CN1250209A (zh) 2000-04-12
JP2000201037A (ja) 2000-07-18
DE69931231T2 (de) 2007-02-22
FR2784820B1 (fr) 2000-12-08

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