DE69132425T2 - Optische Platte - Google Patents

Optische Platte

Info

Publication number
DE69132425T2
DE69132425T2 DE69132425T DE69132425T DE69132425T2 DE 69132425 T2 DE69132425 T2 DE 69132425T2 DE 69132425 T DE69132425 T DE 69132425T DE 69132425 T DE69132425 T DE 69132425T DE 69132425 T2 DE69132425 T2 DE 69132425T2
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
DE69132425T
Other languages
English (en)
Other versions
DE69132425D1 (de
Inventor
Isao Satoh
Sadao Mizuno
Noboru Itoh
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.)
Panasonic Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of DE69132425D1 publication Critical patent/DE69132425D1/de
Publication of DE69132425T2 publication Critical patent/DE69132425T2/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
    • 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
    • G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • G11B7/1369—Active plates, e.g. liquid crystal panels or electrostrictive elements
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
    • G11B7/13925—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means
    • 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
    • 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
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • G11B7/00454—Recording involving phase-change effects
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
DE69132425T 1990-04-20 1991-04-19 Optische Platte Expired - Lifetime DE69132425T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10615790 1990-04-20
JP32871590 1990-11-27

Publications (2)

Publication Number Publication Date
DE69132425D1 DE69132425D1 (de) 2000-10-26
DE69132425T2 true DE69132425T2 (de) 2001-03-08

Family

ID=26446323

Family Applications (3)

Application Number Title Priority Date Filing Date
DE69132425T Expired - Lifetime DE69132425T2 (de) 1990-04-20 1991-04-19 Optische Platte
DE69132426T Expired - Lifetime DE69132426T2 (de) 1990-04-20 1991-04-19 System zur Aufzeichnung/Wiedergabe von Information auf/von eine(r) aufzeichnungsfähige(n) optische(n) Platte
DE69132579T Expired - Lifetime DE69132579T2 (de) 1990-04-20 1991-04-19 Verfahren zur Aufzeichnung/Wiedergabe von Information auf/von eine(r)aufzeichnungsfähige(n)optische(n) Platte

Family Applications After (2)

Application Number Title Priority Date Filing Date
DE69132426T Expired - Lifetime DE69132426T2 (de) 1990-04-20 1991-04-19 System zur Aufzeichnung/Wiedergabe von Information auf/von eine(r) aufzeichnungsfähige(n) optische(n) Platte
DE69132579T Expired - Lifetime DE69132579T2 (de) 1990-04-20 1991-04-19 Verfahren zur Aufzeichnung/Wiedergabe von Information auf/von eine(r)aufzeichnungsfähige(n)optische(n) Platte

Country Status (4)

Country Link
US (1) US5148421A (de)
EP (4) EP0862166B1 (de)
KR (1) KR970011407B1 (de)
DE (3) DE69132425T2 (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5235581A (en) 1990-08-09 1993-08-10 Matsushita Electric Industrial Co., Ltd. Optical recording/reproducing apparatus for optical disks with various disk substrate thicknesses
WO1993010528A1 (en) * 1991-11-20 1993-05-27 Sony Corporation Optical disk
JP2807589B2 (ja) * 1992-02-13 1998-10-08 シャープ株式会社 光源ユニット及び該光源ユニットを使用した光学ヘッド
JPH0636517A (ja) * 1992-07-16 1994-02-10 Matsushita Electric Ind Co Ltd 光情報記録再生装置
JP2532818B2 (ja) 1993-02-01 1996-09-11 松下電器産業株式会社 対物レンズおよび光ヘッド装置
US5815293A (en) * 1993-02-01 1998-09-29 Matsushita Electric Industrial Co., Ltd. Compound objective lens having two focal points
CN100369134C (zh) * 1993-08-04 2008-02-13 松下电器产业株式会社 聚焦控制方法和光盘装置
US5729510A (en) * 1994-01-19 1998-03-17 Kabushiki Kaisha Toshiba Optical head used for recording on optical recording medium having various thicknesses, warpage and the like
JP3240846B2 (ja) * 1994-08-12 2001-12-25 松下電器産業株式会社 光ヘッド
JP3519804B2 (ja) * 1994-11-10 2004-04-19 オリンパス株式会社 光ピックアップ装置
DE69632493T2 (de) * 1995-02-02 2005-05-12 Pioneer Electronic Corp. Optisches Abtastgerät und Identifizierungsgerät zum Identifizieren des Typs eines optischen Aufzeichnungsmediums
US5625609A (en) * 1995-03-13 1997-04-29 International Business Machines Corporation Multiple data layer optical disk drive system with fixed aberration correction and optimum interlayer spacing
US5742441A (en) * 1995-04-07 1998-04-21 Discovision Associates Method and apparatus for aligning an objective lens
US5708633A (en) * 1995-06-07 1998-01-13 Discovision Associates Method and apparatus for manufacturing information storage devices
KR19990028735A (ko) * 1995-07-05 1999-04-15 모리슨 그랜트 광 저장 시스템
JPH09115178A (ja) * 1995-10-17 1997-05-02 Toshiba Corp 光ヘッド装置およびその製造方法
DE19611904A1 (de) * 1996-03-26 1997-10-02 Thomson Brandt Gmbh Gerät zum Lesen und/oder Beschreiben optischer Aufzeichnungsträger
US6016301A (en) * 1996-04-01 2000-01-18 Sony Corporation Optical pickup device and optical disc reproducing apparatus
JPH10106019A (ja) * 1996-09-24 1998-04-24 Nec Corp ２波長分離型光ヘッド
JPH10172243A (ja) * 1996-12-11 1998-06-26 Sony Corp 円盤状記録媒体および円盤状記録媒体再生装置
JP2000030257A (ja) * 1998-07-08 2000-01-28 Taiyo Yuden Co Ltd 光情報媒体とその記録方法
US6839306B1 (en) * 2000-07-28 2005-01-04 Terastar Corporation Optical near-field second surface recording
AU2003242514A1 (en) * 2002-07-11 2004-02-02 Glud And Marstrand A/S A compensated optical storage medium

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52153705A (en) * 1976-06-17 1977-12-21 Teac Co Optical disc regenerator
JPS57130243A (en) * 1981-02-05 1982-08-12 Toshiba Corp Information storage medium
JPS59198537A (ja) * 1983-04-22 1984-11-10 Matsushita Electric Ind Co Ltd 光学的記録再生装置
US4561086A (en) * 1983-05-12 1985-12-24 Eastman Kodak Company Optical write/read unit with selective-transparency cover
JPS60243834A (ja) * 1984-05-18 1985-12-03 Matsushita Electric Ind Co Ltd 光学ヘツド
GB2166583B (en) * 1984-09-20 1988-06-29 Pioneer Electronic Corp Optical information recording and/or reproducing apparatus
GB2168166B (en) * 1984-10-25 1989-06-01 Olympus Optical Co Graded refractive index lens system
US4712207A (en) * 1985-03-18 1987-12-08 Rca Corporation Apparatus for erasing information on a reversible optical recording medium
JPS6266433A (ja) * 1985-09-19 1987-03-25 Mitsubishi Electric Corp 光学式ヘツド装置
JPH071560B2 (ja) * 1985-09-20 1995-01-11 オリンパス光学工業株式会社 光学式記録再生装置
US4892606A (en) * 1986-08-28 1990-01-09 Canon Kabushiki Kaisha Optical recording medium having space therein and method of manufacturing the same
JPS6396745A (ja) * 1986-10-13 1988-04-27 Matsushita Electric Ind Co Ltd 光学ヘツド
US5297132A (en) * 1986-10-29 1994-03-22 Dai Nippon Insatsu Kabushiki Kaisha Draw type optical recording medium
DE3855045T2 (de) * 1987-02-13 1996-06-13 Dow Chemical Co Medium für optische aufzeichnung
US4959824A (en) * 1987-07-31 1990-09-25 Minolta Camera Kabushiki Kaisha Optical information record/pickup head assembly
JP2655923B2 (ja) * 1990-01-22 1997-09-24 シャープ株式会社 光ヘッド装置
JPH03225650A (ja) * 1990-01-31 1991-10-04 Sony Corp 光ディスクシステム

Also Published As

Publication number Publication date
DE69132426D1 (de) 2000-10-26
EP0862166A1 (de) 1998-09-02
EP0452953A2 (de) 1991-10-23
DE69132579T2 (de) 2001-06-28
EP0862165B1 (de) 2000-09-20
EP0862166B1 (de) 2000-09-20
EP0862165A1 (de) 1998-09-02
DE69132426T2 (de) 2001-03-08
KR910018990A (ko) 1991-11-30
EP0855702A3 (de) 1998-09-02
EP0452953A3 (en) 1992-11-25
DE69132425D1 (de) 2000-10-26
KR970011407B1 (ko) 1997-07-10
EP0855702A2 (de) 1998-07-29
US5148421A (en) 1992-09-15
DE69132579D1 (de) 2001-05-10
EP0855702B1 (de) 2000-09-20

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Representative=s name: JUNG, SCHIRDEWAHN, GRUENBERG, SCHNEIDER PATENTANWAELTE

8328 Change in the person/name/address of the agent

Representative=s name: ADVOTEC. PATENT- UND RECHTSANWAELTE, 80538 MUENCHE

8327 Change in the person/name/address of the patent owner

Owner name: PANASONIC CORP., KADOMA, OSAKA, JP