DE69830990D1 - Optische vorrichtung - Google Patents

Optische vorrichtung

Info

Publication number
DE69830990D1
DE69830990D1 DE69830990T DE69830990T DE69830990D1 DE 69830990 D1 DE69830990 D1 DE 69830990D1 DE 69830990 T DE69830990 T DE 69830990T DE 69830990 T DE69830990 T DE 69830990T DE 69830990 D1 DE69830990 D1 DE 69830990D1
Authority
DE
Germany
Prior art keywords
optical device
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 - Fee Related
Application number
DE69830990T
Other languages
English (en)
Other versions
DE69830990T2 (de
Inventor
Yoichi Tsuchiya
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Publication of DE69830990D1 publication Critical patent/DE69830990D1/de
Application granted granted Critical
Publication of DE69830990T2 publication Critical patent/DE69830990T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B7/24—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
    • 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
    • G11B7/24085—Pits
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
DE69830990T 1997-04-25 1998-04-23 Optische vorrichtung Expired - Fee Related DE69830990T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP10943297 1997-04-25
JP9109432A JPH10302320A (ja) 1997-04-25 1997-04-25 記録媒体および光ピックアップ装置
PCT/JP1998/001894 WO1998049680A1 (fr) 1997-04-25 1998-04-23 Support d'enregistrement et dispositif de lecture optique

Publications (2)

Publication Number Publication Date
DE69830990D1 true DE69830990D1 (de) 2005-09-01
DE69830990T2 DE69830990T2 (de) 2006-05-24

Family

ID=14510107

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69830990T Expired - Fee Related DE69830990T2 (de) 1997-04-25 1998-04-23 Optische vorrichtung

Country Status (8)

Country Link
US (1) US6262966B1 (de)
EP (1) EP0978830B1 (de)
JP (1) JPH10302320A (de)
KR (1) KR20010020231A (de)
CN (1) CN1252884A (de)
DE (1) DE69830990T2 (de)
TW (1) TW391000B (de)
WO (1) WO1998049680A1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3123500B2 (ja) 1998-03-12 2001-01-09 日本電気株式会社 光ディスク装置
IT247679Y1 (it) 1999-11-29 2002-09-09 Atop Innovation Spa Perfezionato disco ottico compatto, o cd.
JP4287580B2 (ja) * 1999-11-30 2009-07-01 Ｔｄｋ株式会社 光情報媒体の再生方法
JP2001229576A (ja) * 2000-02-10 2001-08-24 Sony Corp 光記録媒体及び光記録媒体製造用原盤
JP2001229546A (ja) * 2000-02-14 2001-08-24 Sony Corp 光記録媒体及び光記録媒体製造用原盤
TWI239002B (en) * 2000-03-10 2005-09-01 Sony Corp Optical recording/reproducing apparatus, optical head apparatus, optical disc drive apparatus, tracking control method for use therein, and optical disc
AU2001223952A1 (en) * 2000-12-15 2002-06-24 Atop Innovation S.P.A. Improved optical compact disc, or cd
JP2003173543A (ja) 2001-09-26 2003-06-20 Victor Co Of Japan Ltd 情報記録担体及び情報記録担体の再生方法及び情報記録担体の再生装置
KR20030030506A (ko) * 2001-10-11 2003-04-18 삼성전자주식회사 고밀도 광디스크
KR100896681B1 (ko) * 2001-12-18 2009-05-14 삼성전자주식회사 컴팩트 디스크에 데이터를 기록하는 방법 및 그 장치
JP3967691B2 (ja) * 2003-03-31 2007-08-29 株式会社東芝 情報記憶媒体と情報再生装置と情報記録再生装置
US20070030786A1 (en) * 2003-05-21 2007-02-08 Jansen Theodorus Petrus H G Method of storing rll encoded information to an optical disc with control of the frequency of the information with respect to the cut-off frequency of the optical system

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3002318B2 (ja) * 1992-01-20 2000-01-24 パイオニア株式会社 光ディスク及び光ディスク再生装置
JPH0689473A (ja) 1992-09-10 1994-03-29 Matsushita Electric Ind Co Ltd 光磁気記録媒体
JPH0887747A (ja) 1994-02-02 1996-04-02 Sanyo Electric Co Ltd ディスク及びディスク再生方法
US5477527A (en) * 1994-02-02 1995-12-19 Sanyo Electric Co., Ltd. High density optical disc and optical disc player
JPH0887770A (ja) * 1994-03-18 1996-04-02 Sanyo Electric Co Ltd 光学式情報再生装置及び方法
JP3268126B2 (ja) * 1994-07-06 2002-03-25 シャープ株式会社 光記録媒体
JPH08180492A (ja) 1994-12-26 1996-07-12 Sharp Corp 光ピックアップ
JP3210549B2 (ja) * 1995-05-17 2001-09-17 日本コロムビア株式会社 光情報記録媒体
JPH09147421A (ja) 1995-11-17 1997-06-06 Toray Ind Inc 光ディスク用基板および光記録媒体
WO1997033276A1 (fr) * 1996-03-06 1997-09-12 Kabushiki Kaisha Toshiba Appareil de mise au point et appareil optique dans lequel il est utilise

Also Published As

Publication number Publication date
EP0978830B1 (de) 2005-07-27
KR20010020231A (ko) 2001-03-15
EP0978830A1 (de) 2000-02-09
TW391000B (en) 2000-05-21
DE69830990T2 (de) 2006-05-24
CN1252884A (zh) 2000-05-10
EP0978830A4 (de) 2000-07-26
WO1998049680A1 (fr) 1998-11-05
JPH10302320A (ja) 1998-11-13
US6262966B1 (en) 2001-07-17

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee