KR100613797B1 - 광 기록 매체 - Google Patents

광 기록 매체 Download PDF

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Publication number
KR100613797B1
KR100613797B1 KR1020000005741A KR20000005741A KR100613797B1 KR 100613797 B1 KR100613797 B1 KR 100613797B1 KR 1020000005741 A KR1020000005741 A KR 1020000005741A KR 20000005741 A KR20000005741 A KR 20000005741A KR 100613797 B1 KR100613797 B1 KR 100613797B1
Authority
KR
South Korea
Prior art keywords
recording
layer
dielectric layer
magneto
signal
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
KR1020000005741A
Other languages
English (en)
Korean (ko)
Other versions
KR20000057954A (ko
Inventor
미우라히로시
이께다이쯔로
사까이히로유끼
Original Assignee
소니 가부시끼 가이샤
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 소니 가부시끼 가이샤 filed Critical 소니 가부시끼 가이샤
Publication of KR20000057954A publication Critical patent/KR20000057954A/ko
Application granted granted Critical
Publication of KR100613797B1 publication Critical patent/KR100613797B1/ko
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier
    • G11B11/10578—Servo format, e.g. prepits, guide tracks, pilot signals
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24073—Tracks
    • G11B7/24079—Width or depth
    • 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
    • G11B7/0938—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 servo format, e.g. guide tracks, pilot signals
KR1020000005741A 1999-02-09 2000-02-08 광 기록 매체 Expired - Fee Related KR100613797B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11031551A JP2000231744A (ja) 1999-02-09 1999-02-09 光記録媒体
JP1999-031551 1999-02-09

Publications (2)

Publication Number Publication Date
KR20000057954A KR20000057954A (ko) 2000-09-25
KR100613797B1 true KR100613797B1 (ko) 2006-08-22

Family

ID=12334335

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020000005741A Expired - Fee Related KR100613797B1 (ko) 1999-02-09 2000-02-08 광 기록 매체

Country Status (4)

Country Link
EP (1) EP1028414A1 (enExample)
JP (1) JP2000231744A (enExample)
KR (1) KR100613797B1 (enExample)
TW (1) TW464840B (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003233937A (ja) 2002-02-06 2003-08-22 Sony Corp 光学記録再生方法及び光記録媒体
TWI404894B (zh) * 2009-12-22 2013-08-11 Ind Tech Res Inst 照明系統

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5554451A (en) * 1991-09-27 1996-09-10 Brother Kogyo Kabushiki Kaisha Optical data recording medium
US5635267A (en) * 1992-09-17 1997-06-03 Matsushita Electric Industrial Co., Ltd. Optical information recording medium of phase change type having variably grooved tracks depending on their radial locations
US5863702A (en) * 1995-03-28 1999-01-26 Toray Industries, Inc. Optical recording media
US5764619A (en) * 1995-04-07 1998-06-09 Matsushita Electric Industrial Co., Ltd. Optical recording medium having two separate recording layers
US6118752A (en) * 1995-07-07 2000-09-12 Matsushita Electric Industrial Co., Ltd. Optical information recording medium offset pre-pit array indicating identification information
JPH11134720A (ja) * 1997-08-28 1999-05-21 Matsushita Electric Ind Co Ltd 光学的情報記録媒体及びその記録再生方法

Also Published As

Publication number Publication date
TW464840B (en) 2001-11-21
JP2000231744A (ja) 2000-08-22
EP1028414A1 (en) 2000-08-16
KR20000057954A (ko) 2000-09-25

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