DE69514852T2 - Optische Scheibe - Google Patents

Optische Scheibe

Info

Publication number
DE69514852T2
DE69514852T2 DE69514852T DE69514852T DE69514852T2 DE 69514852 T2 DE69514852 T2 DE 69514852T2 DE 69514852 T DE69514852 T DE 69514852T DE 69514852 T DE69514852 T DE 69514852T DE 69514852 T2 DE69514852 T2 DE 69514852T2
Authority
DE
Germany
Prior art keywords
optical disc
disc
optical
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 - Lifetime
Application number
DE69514852T
Other languages
English (en)
Other versions
DE69514852D1 (de
Inventor
Hideharu Takeshima
Masae Kubo
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.)
Mitsubishi Chemical Media Co Ltd
Original Assignee
Mitsubishi Chemical 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 Mitsubishi Chemical Corp filed Critical Mitsubishi Chemical Corp
Application granted granted Critical
Publication of DE69514852D1 publication Critical patent/DE69514852D1/de
Publication of DE69514852T2 publication Critical patent/DE69514852T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G11B7/08—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
    • 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
    • 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
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10584—Record carriers characterised by the selection of the material or by the structure or form characterised by the form, e.g. comprising mechanical protection elements
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B13/00—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for
    • G11B13/04—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for magnetically or by magnetisation and optically or by radiation, for changing or sensing optical properties
    • 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
DE69514852T 1994-03-22 1995-03-22 Optische Scheibe Expired - Lifetime DE69514852T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7534594 1994-03-22

Publications (2)

Publication Number Publication Date
DE69514852D1 DE69514852D1 (de) 2000-03-09
DE69514852T2 true DE69514852T2 (de) 2000-10-26

Family

ID=13573578

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69514852T Expired - Lifetime DE69514852T2 (de) 1994-03-22 1995-03-22 Optische Scheibe

Country Status (4)

Country Link
US (1) US5583847A (de)
EP (1) EP0674309B1 (de)
DE (1) DE69514852T2 (de)
TW (1) TW325185U (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5949751A (en) * 1995-09-07 1999-09-07 Pioneer Electronic Corporation Optical recording medium and a method for reproducing information recorded from same
WO1997038421A1 (en) * 1996-04-10 1997-10-16 Hitachi Maxell, Ltd. Optical recording medium
JPH10106040A (ja) * 1996-09-26 1998-04-24 Canon Inc 光学的情報記録媒体および光学的情報記録再生装置
DE69703751T2 (de) * 1996-10-25 2001-04-19 Matsushita Electric Ind Co Ltd Optische Platte mit oszillierenden Stegen und Rillen
JPH1166626A (ja) * 1997-08-18 1999-03-09 Sony Corp 光ディスク及びその記録再生方法
DE60024972T2 (de) * 1999-09-08 2006-08-17 Mitsubishi Chemical Corp. Wiederbeschreibbare cd und deren herstellungsverfahren
JP3490356B2 (ja) * 1999-09-29 2004-01-26 シャープ株式会社 光記録媒体、並びに、光記録媒体用原盤およびその製造方法
DE60042895D1 (de) * 2000-02-28 2009-10-15 Fujitsu Ltd Optische platte
JP2001357534A (ja) 2000-04-10 2001-12-26 Victor Co Of Japan Ltd 情報記録媒体
US7054260B2 (en) * 2000-04-26 2006-05-30 Optical Disc Corporation Hybrid discs
KR100694036B1 (ko) * 2000-06-01 2007-03-12 삼성전자주식회사 그루브와 피트의 깊이가 다른 디스크 및 그 제조방법
JP4206620B2 (ja) * 2000-07-31 2009-01-14 日本ビクター株式会社 光情報記録媒体およびその記録再生装置
CN1220981C (zh) * 2001-10-15 2005-09-28 日本胜利株式会社 信息记录载体
JP3776430B2 (ja) * 2001-10-31 2006-05-17 オプティカル ディスク コーポレイション 光学式記録構造体における改良された３次元構成の配置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4750162A (en) * 1985-07-16 1988-06-07 Victor Company Of Japan, Ltd. Optical tracking system utilizing three photo-detectors
JP2693289B2 (ja) * 1991-08-09 1997-12-24 シャープ株式会社 光メモリ
JPH05109119A (ja) * 1991-10-14 1993-04-30 Sony Corp 光デイスク

Also Published As

Publication number Publication date
DE69514852D1 (de) 2000-03-09
EP0674309B1 (de) 2000-02-02
TW325185U (en) 1998-01-11
US5583847A (en) 1996-12-10
EP0674309A1 (de) 1995-09-27

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: MITSUBISHI KAGAKU MEDIA CO., LTD., TOKIO, JP