JP4348741B2 - 光学的情報記録媒体及び光学的情報再生装置 - Google Patents
光学的情報記録媒体及び光学的情報再生装置 Download PDFInfo
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- JP4348741B2 JP4348741B2 JP2005187162A JP2005187162A JP4348741B2 JP 4348741 B2 JP4348741 B2 JP 4348741B2 JP 2005187162 A JP2005187162 A JP 2005187162A JP 2005187162 A JP2005187162 A JP 2005187162A JP 4348741 B2 JP4348741 B2 JP 4348741B2
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- 230000003287 optical effect Effects 0.000 title claims description 102
- 239000008186 active pharmaceutical agent Substances 0.000 claims description 6
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- 125000006850 spacer group Chemical group 0.000 claims 1
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- KTTCLOUATPWTNB-UHFFFAOYSA-N 2-[2-[4-(6,7-dimethoxy-3,4-dihydro-1h-isoquinolin-2-yl)butylcarbamoyl]-4-methylphenoxy]ethyl methanesulfonate Chemical compound C1C=2C=C(OC)C(OC)=CC=2CCN1CCCCNC(=O)C1=CC(C)=CC=C1OCCOS(C)(=O)=O KTTCLOUATPWTNB-UHFFFAOYSA-N 0.000 description 2
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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
- G11B7/24—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
-
- 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
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- Optical Record Carriers And Manufacture Thereof (AREA)
- Optical Recording Or Reproduction (AREA)
Description
再生信号ISOM’03Technical Digest P.160−161
また、本発明にかかる光学的情報再生装置は、カットオフ周波数3KHz以上20KHz以下のハイパスフィルタを具備する。
図4は、光学的情報再生装置10の構成を示すブロック図である。図4を参照して、光学的情報再生装置10は、光ヘッド部12、プリアンプ14、ハイパスフィルタ16、デコード回路18を備えている。図4では、光学的情報記録媒体2を回転させる回転システム、サーボコントロールシステム等の、当業者に知られている他の構成は省略されている。
10:光学的記録再生装置
12:光ヘッド部
14:プリアンプ
16:ハイパスフィルタ(HPF)
18:デコード回路
Claims (3)
- レーザ光を照射することにより情報の記録あるいは再生を行う光学的情報記録媒体において、
スペース層を介して設けられた2層の記録層を具備し、
前記レーザ光の波長をλ(μm)、前記波長λにおける前記スペース層の屈折率をn、前記光学的情報記録媒体の標準線速をv(m/s)とするとき、周方向1(mm)あたりの前記スペース層の層厚の変動量Δdの絶対値は、|Δd|≦(10λ/n/v)である
光学的情報記録媒体。 - レーザ光を照射することにより情報の記録あるいは再生を行う光学的情報記録媒体において、
m個の記録層と、mは3以上の自然数であり、
前記m個の記録層のうち隣り合う各2つの間に設けられた(m−1)個のスペース層とを具備し、
前記レーザ光の波長をλ(μm)、前記波長λにおける前記各スペース層の屈折率をn、前記光学的情報記録媒体の標準線速をv(m/s)、周方向1(mm)あたりの前記各スペース層の層厚の変動量Δdの絶対値は、|Δd|≦(5λ/n/v)である
光学的情報記録媒体。 - レーザ光を照射することにより情報の記録あるいは再生を行う光学的情報記録媒体において、
m個の記録層と、mは3以上の自然数であり、
前記m個の記録層のうち隣り合う各2つの間に設けられた(m−1)個のスペース層とを具備し、
レーザ入射面からk番目(kは、1≦k≦m−2を満たす自然数)の前記スペース層の膜厚をd k 、(k+1)番目のスペース層の膜厚をd k+1 、スペース層厚差分DSを|d k −d k+1 |、前記レーザ光の波長をλ(μm)、前記波長λにおける前記k番目と(k+1)番目のスペース層の各々の屈折率をn、前記光学的情報記録媒体の標準線速をv(m/s)とすると、周方向1(mm)あたりの前記スペース層厚差分DSの変動量ΔDSの絶対値は、|ΔDS| ≦(5λ/n/v)である
光学的情報記録媒体。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005187162A JP4348741B2 (ja) | 2005-06-27 | 2005-06-27 | 光学的情報記録媒体及び光学的情報再生装置 |
| DE602006006114T DE602006006114D1 (de) | 2005-06-27 | 2006-06-27 | Optisches Informationsaufzeichnungsmedium und optisches Informationswiedergabegerät |
| EP06116115A EP1742212B1 (en) | 2005-06-27 | 2006-06-27 | Optical information recording medium and optical information reproducing apparatus |
| US11/474,983 US20060292492A1 (en) | 2005-06-27 | 2006-06-27 | Optical information recording medium and optical information reproducing apparatus |
| CNB2006101000574A CN100437763C (zh) | 2005-06-27 | 2006-06-27 | 光学信息记录介质及光学信息再现装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005187162A JP4348741B2 (ja) | 2005-06-27 | 2005-06-27 | 光学的情報記録媒体及び光学的情報再生装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2007004951A JP2007004951A (ja) | 2007-01-11 |
| JP4348741B2 true JP4348741B2 (ja) | 2009-10-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005187162A Expired - Fee Related JP4348741B2 (ja) | 2005-06-27 | 2005-06-27 | 光学的情報記録媒体及び光学的情報再生装置 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20060292492A1 (ja) |
| EP (1) | EP1742212B1 (ja) |
| JP (1) | JP4348741B2 (ja) |
| CN (1) | CN100437763C (ja) |
| DE (1) | DE602006006114D1 (ja) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5210708B2 (ja) * | 2008-05-20 | 2013-06-12 | 株式会社日立製作所 | 多層光ディスクおよび多層光ディスクに対応可能な光ディスク装置 |
| JP2011198410A (ja) * | 2010-03-19 | 2011-10-06 | Sony Corp | 多層光記録媒体 |
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-
2005
- 2005-06-27 JP JP2005187162A patent/JP4348741B2/ja not_active Expired - Fee Related
-
2006
- 2006-06-27 EP EP06116115A patent/EP1742212B1/en not_active Not-in-force
- 2006-06-27 US US11/474,983 patent/US20060292492A1/en not_active Abandoned
- 2006-06-27 CN CNB2006101000574A patent/CN100437763C/zh not_active Expired - Fee Related
- 2006-06-27 DE DE602006006114T patent/DE602006006114D1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP1742212B1 (en) | 2009-04-08 |
| CN1892842A (zh) | 2007-01-10 |
| JP2007004951A (ja) | 2007-01-11 |
| EP1742212A1 (en) | 2007-01-10 |
| DE602006006114D1 (de) | 2009-05-20 |
| CN100437763C (zh) | 2008-11-26 |
| US20060292492A1 (en) | 2006-12-28 |
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