WO2008143125A1 - 多層光ディスク - Google Patents

多層光ディスク Download PDF

Info

Publication number
WO2008143125A1
WO2008143125A1 PCT/JP2008/058923 JP2008058923W WO2008143125A1 WO 2008143125 A1 WO2008143125 A1 WO 2008143125A1 JP 2008058923 W JP2008058923 W JP 2008058923W WO 2008143125 A1 WO2008143125 A1 WO 2008143125A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical disc
multilayer optical
recording layer
reflectivity
recording
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.)
Ceased
Application number
PCT/JP2008/058923
Other languages
English (en)
French (fr)
Inventor
Yoshinori Ishikawa
Koji Mishima
Tsutomu Aoyama
Takashi Kikukawa
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.)
Hitachi Ltd
TDK Corp
Original Assignee
Hitachi Ltd
TDK 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 Hitachi Ltd, TDK Corp filed Critical Hitachi Ltd
Priority to EP08752783A priority Critical patent/EP2148331B1/en
Priority to US12/600,580 priority patent/US8233374B2/en
Priority to CN200880016388.7A priority patent/CN101681647B/zh
Publication of WO2008143125A1 publication Critical patent/WO2008143125A1/ja
Anticipated expiration legal-status Critical
Ceased 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
    • G11B7/2403—Layers; Shape, structure or physical properties thereof
    • G11B7/24035—Recording layers
    • G11B7/24038—Multiple laminated recording layers
    • 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
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
    • 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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08511—Methods for track change, selection or preliminary positioning by moving the head with focus pull-in only
    • 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
    • G11B2007/0009—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage
    • G11B2007/0013—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage for carriers having multiple discrete layers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/21—Circular sheet or circular blank

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Optical Head (AREA)

Abstract

　３層以上の記録層を有する多層光ディスクであって、所望の記録層へ容易にフォーカス引き込み可能な多層光ディスクにおいて、所望の記録層の反射率と他の記録層の反射率との比が前記他の記録層の反射率を基準として所定の値以上となるよう各記録層の反射率を設定する。
PCT/JP2008/058923 2007-05-17 2008-05-15 多層光ディスク Ceased WO2008143125A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08752783A EP2148331B1 (en) 2007-05-17 2008-05-15 Multilayer optical disc
US12/600,580 US8233374B2 (en) 2007-05-17 2008-05-15 Multilayer optical disc
CN200880016388.7A CN101681647B (zh) 2007-05-17 2008-05-15 多层光盘

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-131852 2007-05-17
JP2007131852A JP4839262B2 (ja) 2007-05-17 2007-05-17 多層光ディスク

Publications (1)

Publication Number Publication Date
WO2008143125A1 true WO2008143125A1 (ja) 2008-11-27

Family

ID=40031833

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/058923 Ceased WO2008143125A1 (ja) 2007-05-17 2008-05-15 多層光ディスク

Country Status (5)

Country Link
US (1) US8233374B2 (ja)
EP (1) EP2148331B1 (ja)
JP (1) JP4839262B2 (ja)
CN (1) CN101681647B (ja)
WO (1) WO2008143125A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2455938A4 (en) * 2009-07-17 2014-06-25 Sharp Kk RECORDING MEDIUM FOR OPTICAL INFORMATION

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4744630B2 (ja) * 2008-10-16 2011-08-10 パナソニック株式会社 光ディスク装置
JP2010140576A (ja) * 2008-12-15 2010-06-24 Hitachi Ltd 多層光ディスクおよび光ディスク装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004318938A (ja) * 2003-04-14 2004-11-11 Matsushita Electric Ind Co Ltd 光記録媒体
JP2006351120A (ja) * 2005-06-16 2006-12-28 Sony Corp Ｒｏｍディスクとその製造方法、及び光ディスク
WO2007040038A1 (ja) * 2005-09-30 2007-04-12 Nec Corporation 光学的情報記録媒体，ｂｃａ用情報記録装置，およびｂｃａ用情報記録方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000113507A (ja) 1998-10-09 2000-04-21 Matsushita Electric Ind Co Ltd 光ディスクの再生方法および記録再生方法
KR20050006887A (ko) * 2003-07-10 2005-01-17 삼성전자주식회사 포커스 오프셋을 저감할 수 있는 광픽업 및 이를 채용한광 기록 및/또는 재생기기
JP2006040446A (ja) * 2004-07-28 2006-02-09 Toshiba Corp 光ディスク及び情報再生装置
JPWO2006038633A1 (ja) * 2004-10-05 2008-05-15 松下電器産業株式会社 情報記録媒体、その製造方法、その処理装置並びにその使用準備方法、及び情報記録方法並びに情報記録装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004318938A (ja) * 2003-04-14 2004-11-11 Matsushita Electric Ind Co Ltd 光記録媒体
JP2006351120A (ja) * 2005-06-16 2006-12-28 Sony Corp Ｒｏｍディスクとその製造方法、及び光ディスク
WO2007040038A1 (ja) * 2005-09-30 2007-04-12 Nec Corporation 光学的情報記録媒体，ｂｃａ用情報記録装置，およびｂｃａ用情報記録方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ODS 2006 TECHNICAL DIGEST, vol. 041, 2006, pages 123 - 125
See also references of EP2148331A4

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2455938A4 (en) * 2009-07-17 2014-06-25 Sharp Kk RECORDING MEDIUM FOR OPTICAL INFORMATION

Also Published As

Publication number Publication date
JP2008287804A (ja) 2008-11-27
CN101681647A (zh) 2010-03-24
EP2148331B1 (en) 2013-01-02
CN101681647B (zh) 2012-04-04
US20100260026A1 (en) 2010-10-14
US8233374B2 (en) 2012-07-31
EP2148331A1 (en) 2010-01-27
EP2148331A4 (en) 2011-10-05
JP4839262B2 (ja) 2011-12-21

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