JPWO2007034950A1 - 高密度光ディスク及び再生・トラッキング制御方法 - Google Patents
高密度光ディスク及び再生・トラッキング制御方法 Download PDFInfo
- Publication number
- JPWO2007034950A1 JPWO2007034950A1 JP2007536585A JP2007536585A JPWO2007034950A1 JP WO2007034950 A1 JPWO2007034950 A1 JP WO2007034950A1 JP 2007536585 A JP2007536585 A JP 2007536585A JP 2007536585 A JP2007536585 A JP 2007536585A JP WO2007034950 A1 JPWO2007034950 A1 JP WO2007034950A1
- Authority
- JP
- Japan
- Prior art keywords
- optical
- pit
- optical disk
- pits
- tracking
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000000758 substrate Substances 0.000 claims description 2
- 239000010409 thin film Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
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
- 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
- G11B7/24—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
- G11B7/08—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
- G11B7/0901—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 for track following only
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
Claims (8)
- 光ディスクであって、ランド及びグルーブが形成されていないディスク基板に半径方向のサイズが光学解像限界以下であるピットのみが施されていることを特徴とする光ディスク。
- 請求項1に記載の光ディスクであって、接線方向のピット長も光学解像限界以下のピットを含み、非線形現象を用いた超解像再生をもたらす機能薄膜構造を付加したことを特徴とする光ディスク。
- 請求項1に記載の光ディスクにおいて、上記ピットによりピット列が形成され、該ピット列は、半径方向にグループ化されていることを特徴とする光ディスク。
- 請求項3に記載の光ディスクにおいて、グループ化されたピット列で構成されたトラックの幅及び間隔は、読み出しに用いる光のスポット径に対して、それぞれ30%から200%及び30%から200%であることを特徴とする光ディスク。
- 請求項3に記載の光ディスクにおいて、上記一つのグループの中に少なくとも二つ以上のピット列を含むことを特徴とする光ディスク。
- 請求項4に記載の光ディスクの制御方法において、レーザー光の半径方向への移動度を反射光又は透過光強度の変化として検出し、トラッキングエラー信号とすることを特徴とする光ディスクの制御方法。
- 請求項4に記載の光ディスクの記録及び再生方法であって、請求項6に記載のトラック制御方法を行い、局所的な非線形現象による再生と光学的なトラッキング法を用いた光ディスクの記録及び再生方法。
- 請求項3に記載の光ディスクにおける多値化再生方法であって、請求項6に記載の光ディスクのトラック制御方法を行うことを特徴とする光ディスクの多値化再生方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005277002 | 2005-09-26 | ||
JP2005277002 | 2005-09-26 | ||
PCT/JP2006/318998 WO2007034950A1 (ja) | 2005-09-26 | 2006-09-25 | 高密度光ディスク及び再生・トラッキング制御方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2007034950A1 true JPWO2007034950A1 (ja) | 2009-04-02 |
JP4565116B2 JP4565116B2 (ja) | 2010-10-20 |
Family
ID=37888992
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007536585A Expired - Fee Related JP4565116B2 (ja) | 2005-09-26 | 2006-09-25 | 光ディスクの再生方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20100142362A1 (ja) |
JP (1) | JP4565116B2 (ja) |
WO (1) | WO2007034950A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4590428B2 (ja) * | 2007-05-11 | 2010-12-01 | シャープ株式会社 | 光メモリ素子および光再生装置 |
US8588049B2 (en) * | 2010-05-10 | 2013-11-19 | Thomson Licensing | Optical storage medium comprising a phase shift compensation |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000036116A (ja) * | 1998-06-13 | 2000-02-02 | Lg Electronics Inc | 光記録媒体と光再生方法及び装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3225668B2 (ja) * | 1992-02-19 | 2001-11-05 | ソニー株式会社 | 光記録媒体、その記録方法および再生方法 |
JPH06282845A (ja) * | 1992-06-26 | 1994-10-07 | Sony Corp | 光学式記録再生方法および光学式記録再生装置 |
JP3914596B2 (ja) * | 1996-09-03 | 2007-05-16 | 日立マクセル株式会社 | 多値記録用符号化方法及び記録再生方法 |
JP4613356B2 (ja) * | 1998-03-03 | 2011-01-19 | 独立行政法人産業技術総合研究所 | 光記録媒体、光記録方法、光信号再生方法、光記録装置及び光信号再生装置 |
JP2006501592A (ja) * | 2002-10-04 | 2006-01-12 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 高トラック密度超解像度mo−rom媒体 |
JP2004227622A (ja) * | 2003-01-20 | 2004-08-12 | Toshiba Corp | 光記録媒体および光記録再生方法 |
-
2006
- 2006-09-25 WO PCT/JP2006/318998 patent/WO2007034950A1/ja active Application Filing
- 2006-09-25 US US12/088,216 patent/US20100142362A1/en not_active Abandoned
- 2006-09-25 JP JP2007536585A patent/JP4565116B2/ja not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000036116A (ja) * | 1998-06-13 | 2000-02-02 | Lg Electronics Inc | 光記録媒体と光再生方法及び装置 |
Also Published As
Publication number | Publication date |
---|---|
US20100142362A1 (en) | 2010-06-10 |
WO2007034950A1 (ja) | 2007-03-29 |
JP4565116B2 (ja) | 2010-10-20 |
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