KR100892823B1 - 광디스크 장치 및 자기 디스크 장치 - Google Patents

광디스크 장치 및 자기 디스크 장치 Download PDF

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Publication number
KR100892823B1
KR100892823B1 KR1020077020469A KR20077020469A KR100892823B1 KR 100892823 B1 KR100892823 B1 KR 100892823B1 KR 1020077020469 A KR1020077020469 A KR 1020077020469A KR 20077020469 A KR20077020469 A KR 20077020469A KR 100892823 B1 KR100892823 B1 KR 100892823B1
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KR
South Korea
Prior art keywords
signal
state
side threshold
deviation
input
Prior art date
Application number
KR1020077020469A
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English (en)
Korean (ko)
Other versions
KR20070104459A (ko
Inventor
에이지 요코야마
Original Assignee
미쓰비시덴키 가부시키가이샤
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
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Application filed by 미쓰비시덴키 가부시키가이샤 filed Critical 미쓰비시덴키 가부시키가이샤
Publication of KR20070104459A publication Critical patent/KR20070104459A/ko
Application granted granted Critical
Publication of KR100892823B1 publication Critical patent/KR100892823B1/ko

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    • 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
    • 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
    • G11B7/0946—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 operation during external perturbations not related to the carrier or servo beam, e.g. vibration
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
    • 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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08541—Methods for track change, selection or preliminary positioning by moving the head involving track counting to determine position
    • 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
    • G11B7/095—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 discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0953—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 discs, e.g. for compensation of eccentricity or wobble to compensate for eccentricity of the disc or disc tracks

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  • Optical Recording Or Reproduction (AREA)
  • Feedback Control In General (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
KR1020077020469A 2005-03-09 2006-03-07 광디스크 장치 및 자기 디스크 장치 KR100892823B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JPJP-P-2005-00065102 2005-03-09
JP2005065102A JP3821828B1 (ja) 2005-03-09 2005-03-09 光ディスク装置

Publications (2)

Publication Number Publication Date
KR20070104459A KR20070104459A (ko) 2007-10-25
KR100892823B1 true KR100892823B1 (ko) 2009-04-10

Family

ID=36953301

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020077020469A KR100892823B1 (ko) 2005-03-09 2006-03-07 광디스크 장치 및 자기 디스크 장치

Country Status (5)

Country Link
JP (1) JP3821828B1 (ja)
KR (1) KR100892823B1 (ja)
CN (1) CN100541623C (ja)
TW (1) TWI317935B (ja)
WO (1) WO2006095707A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7245655B2 (ja) * 2019-01-10 2023-03-24 日立Astemo株式会社 サスペンション制御装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03235226A (ja) * 1990-02-13 1991-10-21 Marantz Japan Inc 光学式ピックアップレンズの振動ブレーキ回路
JPH11175984A (ja) 1997-12-11 1999-07-02 Hitachi Ltd 情報の記録あるいは再生を行う装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03235227A (ja) * 1990-02-13 1991-10-21 Marantz Japan Inc 光学式ピックアップのトラッキングに対する振動収束回路

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03235226A (ja) * 1990-02-13 1991-10-21 Marantz Japan Inc 光学式ピックアップレンズの振動ブレーキ回路
JPH11175984A (ja) 1997-12-11 1999-07-02 Hitachi Ltd 情報の記録あるいは再生を行う装置

Also Published As

Publication number Publication date
JP3821828B1 (ja) 2006-09-13
TW200639813A (en) 2006-11-16
CN101133446A (zh) 2008-02-27
KR20070104459A (ko) 2007-10-25
JP2006252627A (ja) 2006-09-21
WO2006095707A1 (ja) 2006-09-14
CN100541623C (zh) 2009-09-16
TWI317935B (en) 2009-12-01

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