TW464840B - Optical recording medium - Google Patents

Optical recording medium Download PDF

Info

Publication number
TW464840B
TW464840B TW089101520A TW89101520A TW464840B TW 464840 B TW464840 B TW 464840B TW 089101520 A TW089101520 A TW 089101520A TW 89101520 A TW89101520 A TW 89101520A TW 464840 B TW464840 B TW 464840B
Authority
TW
Taiwan
Prior art keywords
layer
recording
magneto
dielectric layer
recording medium
Prior art date
Application number
TW089101520A
Other languages
English (en)
Chinese (zh)
Inventor
Hiroshi Miura
Etsuro Ikeda
Hiroyuki Sakai
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 TW464840B publication Critical patent/TW464840B/zh

Links

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
TW089101520A 1999-02-09 2000-01-28 Optical recording medium TW464840B (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
TW464840B true TW464840B (en) 2001-11-21

Family

ID=12334335

Family Applications (1)

Application Number Title Priority Date Filing Date
TW089101520A TW464840B (en) 1999-02-09 2000-01-28 Optical recording medium

Country Status (4)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI404894B (zh) * 2009-12-22 2013-08-11 Ind Tech Res Inst 照明系統

Families Citing this family (1)

* 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

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI404894B (zh) * 2009-12-22 2013-08-11 Ind Tech Res Inst 照明系統

Also Published As

Publication number Publication date
JP2000231744A (ja) 2000-08-22
EP1028414A1 (en) 2000-08-16
KR100613797B1 (ko) 2006-08-22
KR20000057954A (ko) 2000-09-25

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Legal Events

Date Code Title Description
GD4A Issue of patent certificate for granted invention patent
MM4A Annulment or lapse of patent due to non-payment of fees