JP4933640B2 - 光情報記録媒体 - Google Patents
光情報記録媒体 Download PDFInfo
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- JP4933640B2 JP4933640B2 JP2010134198A JP2010134198A JP4933640B2 JP 4933640 B2 JP4933640 B2 JP 4933640B2 JP 2010134198 A JP2010134198 A JP 2010134198A JP 2010134198 A JP2010134198 A JP 2010134198A JP 4933640 B2 JP4933640 B2 JP 4933640B2
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 20
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Classifications
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- 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
- G11B7/007—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
- G11B7/00745—Sectoring or header formats within a track
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10009—Improvement or modification of read or write signals
- G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
- G11B20/10055—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter using partial response filtering when writing the signal to the medium or reading it therefrom
- G11B20/1012—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter using partial response filtering when writing the signal to the medium or reading it therefrom partial response PR(1,2,2,2,1)
-
- 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
- G11B7/013—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 for discrete information, i.e. where each information unit is stored in a distinct discrete location, e.g. digital information formats within a data block or sector
-
- 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
- G11B7/24—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
- G11B7/24085—Pits
- G11B7/24088—Pits for storing more than two values, i.e. multi-valued recording for data or prepits
-
- 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
-
- 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
- G11B7/013—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 for discrete information, i.e. where each information unit is stored in a distinct discrete location, e.g. digital information formats within a data block or sector
- G11B2007/0133—Details of discrete information structures, e.g. shape or dimensions of pits, prepits
-
- 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
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
- G11B7/261—Preparing a master, e.g. exposing photoresist, electroforming
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
- Manufacturing Optical Record Carriers (AREA)
Description
上記プリピット群により構成されるマークのうち、長さが最小となる最小マークと、上記プリピット群により構成されるスペースのうち、長さが最小となる最小スペースとの平均長さは、上記情報記録層に記録された情報を再生するための再生光学系の解像限界以下であり、上記超解像膜は、上記プリピット群により記録された情報を上記再生光学系により再生可能とする膜であり、上記プリピット群は、上記再生光の入射面に対して、上記スペースより、上記マークが凹んで形成されるインピット形式である。
本発明の一実施の形態に係る光情報記録媒体(多層超解像光情報記録媒体)1の構成について説明する。
次に、図2、図3を用い、中間層30、基板50に設けられているプリピット群31・51の構成について説明する。
次に、従来の多層再生専用情報記録媒体に、超解像技術を適応させる際の問題点について、以下説明する。まず、マークエッジ記録方式を採用した光情報記録媒体のプリピットの記録形式及び情報記録層の構成の違いによる再生特性の違いについて説明し、次に、マークエッジを採用しないモノトーン記録方式(=マークポジション記録方式)を採用した光情報記録媒体の再生特性について説明する。
(単層の情報記録層と、多層の情報記録層との再生信号の評価実験)
最初に、図8〜図10を用いて、多層超解像光情報記録媒体の各情報記録層における再生特性は、各情報記録層を分離する中間層の膜厚等が適切であれば、同様にして作製した情報記録層が単層からなる光情報記録媒体の結果から想定が可能であることを示す。
次に、プリピット記録方式別、及びプリピットの密度別の再生専用の多層光情報記録媒体における各情報記録層の再生優劣を確認するために、上記結論に従い、以下の実験用光ディスクである単層光情報記録媒体300A・300B・400A・400B・500A・500b・600A・600Bを作製した。
次に、モノトーン記録方式を採用した多層超解像光情報記録媒体との再生特性の比較結果について、図15〜図17を用いて説明する。
10 カバー層(透光層)
20・120 第1情報記録層
23・43 超解像膜
30 中間層
31・51・51a プリピット群
32・52 マーク
33・53 スペース
40・40a・140 第2情報記録層
50・50a 基板
Claims (5)
- 再生光の入射側から順に、当該再生光の入射面を有する透光層と、2層以上の情報記録層と、基板とが配され、さらに、上記情報記録層をそれぞれに分離する中間層と、を備えた光情報記録媒体であって、
上記2層以上の情報記録層には、所定の変調方式で、マーク及びスペースとして情報が記録されており、
上記2層以上の情報記録層のそれぞれは、
上記マーク及びスペースを構成するプリピット群と、超解像膜とを備え、
上記プリピット群により構成されるマーク及びスペースは異なる長さを有し、
上記プリピット群により構成されるマークのうち、長さが最小となる最小マークと、上記プリピット群により構成されるスペースのうち、長さが最小となる最小スペースとの平
均長さは、上記情報記録層に記録された情報を再生するための再生光学系の解像限界以下であり、
上記超解像膜は、上記プリピット群により記録された情報を上記再生光学系により再生可能とする膜であり、
上記プリピット群は、上記再生光の入射面に対して、上記スペースより、上記マークが凹んで形成されるインピット形式であることを特徴とする光情報記録媒体。 - 上記再生光学系の再生光の波長をλ、開口数をNAとすると、
上記プリピット群における最小マークと、最小スペースとの平均長さが、λ/(5.7
6NA)以下であることを特徴とする請求項1に記載の光情報記録媒体。 - 上記2層以上の情報記録層のそれぞれは、上記プリピット群により記録されている情報を上記再生光学系により再生可能とするように構成された層であることを示す情報が、上記光情報記録媒体の種別を示すディスクタイプ識別情報に含まれており、
上記ディスクタイプ識別情報は、
上記マーク及びスペースとして記録されている情報と比べて、容易に検出可能な記録方式で、上記2層以上の情報記録層のうち何れか1層の情報記録層に記録されていることを特徴とする請求項1又は2に記載の光情報記録媒体。 - 上記容易に検出可能な記録方式は、パルスレーザー光を上記情報記録層に照射して形成されたものであり、10μm単位の幅で、長さが100μm単位からmm単位の複数のストライプにより示される情報の記録方式であることを特徴とする請求項3に記載の光情報記録媒体。
- 上記ディスクタイプ識別情報、及び上記光情報記録媒体の個々を識別する情報である個体識別番号が記録される半径位置は、情報の再生にトラッキングが必要となる情報記録領域より内周側にあることを特徴とする請求項3又は4に記載の光情報記録媒体。
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010134198A JP4933640B2 (ja) | 2010-06-11 | 2010-06-11 | 光情報記録媒体 |
CN201180039353.7A CN103069489B (zh) | 2010-06-11 | 2011-06-10 | 光信息记录介质 |
PCT/JP2011/063405 WO2011155608A1 (ja) | 2010-06-11 | 2011-06-10 | 光情報記録媒体 |
CN201510527160.6A CN105139872B (zh) | 2010-06-11 | 2011-06-10 | 光信息记录介质再生装置 |
US13/702,613 US8699313B2 (en) | 2010-06-11 | 2011-06-10 | Optical information recording medium having super-resolution film |
CN201510525056.3A CN105185389B (zh) | 2010-06-11 | 2011-06-10 | 再生方法 |
CN201510526760.0A CN105139871B (zh) | 2010-06-11 | 2011-06-10 | 光信息记录介质再生装置 |
CN201510527147.0A CN105206288B (zh) | 2010-06-11 | 2011-06-10 | 光信息记录介质再生装置 |
US14/183,800 US8817587B2 (en) | 2010-06-11 | 2014-02-19 | Optical information recording medium having super-resolution film |
US14/328,826 US8913476B2 (en) | 2010-06-11 | 2014-07-11 | Optical information recording medium having super-resolution film |
US14/533,378 US9105278B2 (en) | 2010-06-11 | 2014-11-05 | Optical information recording medium having super-resolution film |
US14/788,916 US20150302882A1 (en) | 2010-06-11 | 2015-07-01 | Optical information recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010134198A JP4933640B2 (ja) | 2010-06-11 | 2010-06-11 | 光情報記録媒体 |
Publications (2)
Publication Number | Publication Date |
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JP2011258297A JP2011258297A (ja) | 2011-12-22 |
JP4933640B2 true JP4933640B2 (ja) | 2012-05-16 |
Family
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JP2010134198A Active JP4933640B2 (ja) | 2010-06-11 | 2010-06-11 | 光情報記録媒体 |
Country Status (4)
Country | Link |
---|---|
US (5) | US8699313B2 (ja) |
JP (1) | JP4933640B2 (ja) |
CN (5) | CN105139872B (ja) |
WO (1) | WO2011155608A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108133716B (zh) * | 2013-06-07 | 2020-07-28 | 夏普株式会社 | 光信息记录介质以及再生方法 |
CN111755032B (zh) * | 2013-07-16 | 2021-07-16 | 夏普株式会社 | 再生装置 |
Family Cites Families (20)
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WO1999035644A1 (fr) * | 1998-01-12 | 1999-07-15 | Hitachi Maxell, Ltd. | Procede et dispositif de reproduction magneto-optique |
US6511788B1 (en) | 1999-02-12 | 2003-01-28 | Sony Corporation | Multi-layered optical disc |
JP4085503B2 (ja) | 1999-02-12 | 2008-05-14 | ソニー株式会社 | 多層光ディスク |
JP2001035012A (ja) | 1999-07-27 | 2001-02-09 | Victor Co Of Japan Ltd | 光記録媒体 |
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 |
JP2003331437A (ja) * | 2002-05-09 | 2003-11-21 | Hitachi Ltd | 光ヘッドおよび光ディスク装置 |
US7746749B2 (en) * | 2003-04-30 | 2010-06-29 | Samsung Electronics Co., Ltd. | Look-ahead maximum-likelihood data detector for optical disk drives |
KR100754166B1 (ko) * | 2004-05-17 | 2007-09-03 | 삼성전자주식회사 | 초해상 정보 저장매체 및 그 정보 기록 및/또는 재생기기 |
JP2006048737A (ja) * | 2004-07-30 | 2006-02-16 | Toshiba Corp | 信号処理装置 |
JP2006269040A (ja) | 2005-02-28 | 2006-10-05 | Sharp Corp | 光情報記録媒体、及び光情報記録媒体再生装置 |
JP4285451B2 (ja) * | 2005-07-06 | 2009-06-24 | 株式会社日立製作所 | 情報記録媒体、情報再生方法及び情報記録方法 |
JP4209416B2 (ja) * | 2005-09-29 | 2009-01-14 | シャープ株式会社 | 光情報記録媒体、及び光情報記録媒体再生装置 |
JP2007128590A (ja) * | 2005-11-02 | 2007-05-24 | Nec Corp | 光ディスク装置における評価、調整方法、及び光ディスク装置 |
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2010
- 2010-06-11 JP JP2010134198A patent/JP4933640B2/ja active Active
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2011
- 2011-06-10 CN CN201510527160.6A patent/CN105139872B/zh active Active
- 2011-06-10 WO PCT/JP2011/063405 patent/WO2011155608A1/ja active Application Filing
- 2011-06-10 CN CN201510526760.0A patent/CN105139871B/zh active Active
- 2011-06-10 CN CN201180039353.7A patent/CN103069489B/zh not_active Expired - Fee Related
- 2011-06-10 CN CN201510527147.0A patent/CN105206288B/zh active Active
- 2011-06-10 US US13/702,613 patent/US8699313B2/en active Active
- 2011-06-10 CN CN201510525056.3A patent/CN105185389B/zh active Active
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2014
- 2014-02-19 US US14/183,800 patent/US8817587B2/en not_active Expired - Fee Related
- 2014-07-11 US US14/328,826 patent/US8913476B2/en not_active Expired - Fee Related
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2015
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CN105185389B (zh) | 2018-06-08 |
US20150055445A1 (en) | 2015-02-26 |
CN103069489B (zh) | 2015-09-30 |
CN105139871B (zh) | 2018-06-29 |
CN103069489A (zh) | 2013-04-24 |
CN105139871A (zh) | 2015-12-09 |
US8699313B2 (en) | 2014-04-15 |
US20140169149A1 (en) | 2014-06-19 |
US20150302882A1 (en) | 2015-10-22 |
CN105139872A (zh) | 2015-12-09 |
US8817587B2 (en) | 2014-08-26 |
JP2011258297A (ja) | 2011-12-22 |
US20140321256A1 (en) | 2014-10-30 |
CN105206288B (zh) | 2018-06-29 |
US8913476B2 (en) | 2014-12-16 |
WO2011155608A1 (ja) | 2011-12-15 |
CN105139872B (zh) | 2018-06-29 |
US9105278B2 (en) | 2015-08-11 |
CN105185389A (zh) | 2015-12-23 |
CN105206288A (zh) | 2015-12-30 |
US20130142029A1 (en) | 2013-06-06 |
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