TW373170B - Tracking servo circuit - Google Patents

Tracking servo circuit

Info

Publication number
TW373170B
TW373170B TW085105059A TW85105059A TW373170B TW 373170 B TW373170 B TW 373170B TW 085105059 A TW085105059 A TW 085105059A TW 85105059 A TW85105059 A TW 85105059A TW 373170 B TW373170 B TW 373170B
Authority
TW
Taiwan
Prior art keywords
servo
error signal
tracking error
signal
center level
Prior art date
Application number
TW085105059A
Other languages
English (en)
Inventor
Hidenobu Noda
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
Application granted granted Critical
Publication of TW373170B publication Critical patent/TW373170B/zh

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to 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
    • G11B7/094—Methods and circuits for servo offset compensation
    • 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
    • G11B7/0948—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 specially adapted for detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts
    • 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
    • G11B7/0901—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 for track following only
    • G11B7/0903—Multi-beam tracking systems
TW085105059A 1995-04-28 1996-04-27 Tracking servo circuit TW373170B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7106496A JPH08306054A (ja) 1995-04-28 1995-04-28 トラッキングサーボ回路

Publications (1)

Publication Number Publication Date
TW373170B true TW373170B (en) 1999-11-01

Family

ID=14435054

Family Applications (1)

Application Number Title Priority Date Filing Date
TW085105059A TW373170B (en) 1995-04-28 1996-04-27 Tracking servo circuit

Country Status (8)

Country Link
US (1) US5703849A (zh)
EP (1) EP0740293B1 (zh)
JP (1) JPH08306054A (zh)
KR (1) KR100423919B1 (zh)
CN (1) CN1082221C (zh)
DE (1) DE69624616T2 (zh)
MY (1) MY112967A (zh)
TW (1) TW373170B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6618334B1 (en) 1999-11-04 2003-09-09 Sanyo Electric Co., Ltd. Optical disk recording/reproducing device employing waveform correction of laser output signal

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3550836B2 (ja) * 1995-10-19 2004-08-04 ソニー株式会社 光学装置におけるトラッキングサーボ装置及びトラッキングサーボ方法
JPH1091983A (ja) * 1996-09-12 1998-04-10 Sony Corp 光学式ディスク装置およびトラッキングエラー信号算出回路
EP1710792B1 (en) * 1998-02-13 2013-04-10 Yamaha Corporation Servo-balance adjusting technique for optical disk recording
US7218582B2 (en) * 2002-12-13 2007-05-15 Matsushita Electric Industrial Co., Ltd. Optical disc drive
CN100433148C (zh) * 2002-12-13 2008-11-12 松下电器产业株式会社 光盘装置
JP2005135460A (ja) * 2003-10-28 2005-05-26 Toshiba Corp 光ディスク装置
US7830757B2 (en) * 2007-03-27 2010-11-09 Philips & Lite-On Digital Solutions Corporation Tracking control method for reading/writing optical disk
JP4806393B2 (ja) * 2007-12-14 2011-11-02 オンセミコンダクター・トレーディング・リミテッド 駆動信号生成回路

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0679378B2 (ja) * 1986-12-15 1994-10-05 ソニー株式会社 光学式記録再生装置のトラツキングサ−ボ回路
JPH0821214B2 (ja) * 1987-02-27 1996-03-04 パイオニア株式会社 デイスク再生方式
JP2695446B2 (ja) * 1988-08-31 1997-12-24 キヤノン株式会社 光学的情報記録再生装置
JP2742443B2 (ja) * 1989-04-27 1998-04-22 オリンパス光学工業株式会社 トラッキングサーボループのループゲイン調整装置
JPH0335432A (ja) * 1989-06-30 1991-02-15 Nippon Columbia Co Ltd フォーカスサーボ回路
JP2985248B2 (ja) * 1990-07-17 1999-11-29 ソニー株式会社 スピンドルサーボ装置
JPH04337526A (ja) * 1991-05-14 1992-11-25 Nippon Columbia Co Ltd フォーカスサーボ回路
JPH05144019A (ja) * 1991-11-15 1993-06-11 Taiyo Yuden Co Ltd コンパクトデイスク装置のスレツド暴走防止回路
JPH06162544A (ja) * 1992-11-13 1994-06-10 Sony Corp トラッキングサーボ回路
KR100230238B1 (ko) * 1994-07-30 1999-11-15 윤종용 광 디스크의 포커싱 서보 장치

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6618334B1 (en) 1999-11-04 2003-09-09 Sanyo Electric Co., Ltd. Optical disk recording/reproducing device employing waveform correction of laser output signal

Also Published As

Publication number Publication date
MY112967A (en) 2001-10-31
EP0740293A2 (en) 1996-10-30
KR100423919B1 (ko) 2004-12-30
DE69624616D1 (de) 2002-12-12
KR960038849A (ko) 1996-11-21
CN1147127A (zh) 1997-04-09
EP0740293A3 (en) 1998-02-11
US5703849A (en) 1997-12-30
CN1082221C (zh) 2002-04-03
JPH08306054A (ja) 1996-11-22
EP0740293B1 (en) 2002-11-06
DE69624616T2 (de) 2003-07-03

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