FR2784820B1 - Dispositif amplificateur a gain commandable numeriquement et appareil lecteur de disques optiques incorporant un tel dispositif - Google Patents

Dispositif amplificateur a gain commandable numeriquement et appareil lecteur de disques optiques incorporant un tel dispositif

Info

Publication number
FR2784820B1
FR2784820B1 FR9812495A FR9812495A FR2784820B1 FR 2784820 B1 FR2784820 B1 FR 2784820B1 FR 9812495 A FR9812495 A FR 9812495A FR 9812495 A FR9812495 A FR 9812495A FR 2784820 B1 FR2784820 B1 FR 2784820B1
Authority
FR
France
Prior art keywords
optical disc
disc player
apparatus incorporating
digital controlled
controlled gain
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 - Fee Related
Application number
FR9812495A
Other languages
English (en)
French (fr)
Other versions
FR2784820A1 (fr
Inventor
Pierre Dautriche
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.)
Vantiva SA
Original Assignee
Thomson Multimedia SA
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 Thomson Multimedia SA filed Critical Thomson Multimedia SA
Priority to FR9812495A priority Critical patent/FR2784820B1/fr
Priority to EP99402282A priority patent/EP0993110B1/en
Priority to DE69931231T priority patent/DE69931231T2/de
Priority to CNB991194179A priority patent/CN1158651C/zh
Priority to JP28473299A priority patent/JP4755743B2/ja
Priority to US09/413,393 priority patent/US6184752B1/en
Publication of FR2784820A1 publication Critical patent/FR2784820A1/fr
Application granted granted Critical
Publication of FR2784820B1 publication Critical patent/FR2784820B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
FR9812495A 1998-10-06 1998-10-06 Dispositif amplificateur a gain commandable numeriquement et appareil lecteur de disques optiques incorporant un tel dispositif Expired - Fee Related FR2784820B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
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
EP99402282A EP0993110B1 (en) 1998-10-06 1999-09-17 Amplifier device with digitally controllable gain and optical disc read apparatus incorporating such a device
DE69931231T DE69931231T2 (de) 1998-10-06 1999-09-17 Verstärkervorrichtung mit digital steuerbarer Verstärkung und Lesegerät für optische Platten mit einer solchen Vorrichtung
CNB991194179A CN1158651C (zh) 1998-10-06 1999-09-22 可数控增益的放大器装置及安装此装置的光盘读取装置
JP28473299A 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
US09/413,393 US6184752B1 (en) 1998-10-06 1999-10-06 Amplifier device with digitally controllable gain and optical disc read apparatus incorporating such a device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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 (2)

Publication Number Publication Date
FR2784820A1 FR2784820A1 (fr) 2000-04-21
FR2784820B1 true FR2784820B1 (fr) 2000-12-08

Family

ID=9531240

Family Applications (1)

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

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
JP4755743B2 (ja) 2011-08-24

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Legal Events

Date Code Title Description
ST Notification of lapse