WO2008120373A1 - 再生装置、及びギャップ制御方法 - Google Patents
再生装置、及びギャップ制御方法 Download PDFInfo
- Publication number
- WO2008120373A1 WO2008120373A1 PCT/JP2007/056934 JP2007056934W WO2008120373A1 WO 2008120373 A1 WO2008120373 A1 WO 2008120373A1 JP 2007056934 W JP2007056934 W JP 2007056934W WO 2008120373 A1 WO2008120373 A1 WO 2008120373A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gap
- light
- error signal
- controlling
- medium
- Prior art date
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
- G11B7/08—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
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Abstract
再生装置(1)は、記録媒体(500)に光(L)を照射する光源(101)と、記録媒体の媒体表面に近接して配置され、近接場光を生じさせる固体浸レンズ(111)と、照射された光の一部を媒体表面に集光する対物レンズ(110)と、該集光された光に起因する媒体表面からの第1反射光を受光して、媒体表面及び固体浸レンズ間のギャップを制御するためのフォーカスエラー信号を出力するフォーカスエラー信号生成手段(20)と、光の他の一部に起因する固体浸レンズの底部からの第2反射光を、該固体浸レンズを介して受光して、前記ギャップを制御するためのギャップエラー信号を出力するギャップエラー信号生成手段(116)と、出力されたフォーカスエラー信号に基づいて前記ギャップを制御した後に、出力されたギャップエラー信号に基づいて前記ギャップを制御するギャップ制御手段(30)とを備える。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009507364A JP4891394B2 (ja) | 2007-03-29 | 2007-03-29 | 再生装置、及びギャップ制御方法 |
PCT/JP2007/056934 WO2008120373A1 (ja) | 2007-03-29 | 2007-03-29 | 再生装置、及びギャップ制御方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2007/056934 WO2008120373A1 (ja) | 2007-03-29 | 2007-03-29 | 再生装置、及びギャップ制御方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008120373A1 true WO2008120373A1 (ja) | 2008-10-09 |
Family
ID=39807966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/056934 WO2008120373A1 (ja) | 2007-03-29 | 2007-03-29 | 再生装置、及びギャップ制御方法 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP4891394B2 (ja) |
WO (1) | WO2008120373A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010032938A1 (en) * | 2008-09-17 | 2010-03-25 | Lg Electronics Inc. | Collision prevention method and apparatus between recording medium and lens |
WO2011004497A1 (ja) * | 2009-07-10 | 2011-01-13 | パイオニア株式会社 | 記録再生装置、ギャップ制御方法、ギャップ制御プログラム、並びに記憶媒体 |
JP2011048896A (ja) * | 2009-08-24 | 2011-03-10 | Thomson Licensing | 対物レンズ及び対物レンズを備えた光ピックアップ |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11259902A (ja) * | 1998-03-06 | 1999-09-24 | Toshiba Corp | 光ディスク原盤記録装置および光ディスク原盤記録方法 |
JP2005209246A (ja) * | 2004-01-20 | 2005-08-04 | Sony Corp | 光ディスク装置及びその制御方法 |
-
2007
- 2007-03-29 WO PCT/JP2007/056934 patent/WO2008120373A1/ja active Application Filing
- 2007-03-29 JP JP2009507364A patent/JP4891394B2/ja not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11259902A (ja) * | 1998-03-06 | 1999-09-24 | Toshiba Corp | 光ディスク原盤記録装置および光ディスク原盤記録方法 |
JP2005209246A (ja) * | 2004-01-20 | 2005-08-04 | Sony Corp | 光ディスク装置及びその制御方法 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010032938A1 (en) * | 2008-09-17 | 2010-03-25 | Lg Electronics Inc. | Collision prevention method and apparatus between recording medium and lens |
WO2011004497A1 (ja) * | 2009-07-10 | 2011-01-13 | パイオニア株式会社 | 記録再生装置、ギャップ制御方法、ギャップ制御プログラム、並びに記憶媒体 |
JPWO2011004497A1 (ja) * | 2009-07-10 | 2012-12-13 | パイオニア株式会社 | 記録再生装置、ギャップ制御方法、ギャップ制御プログラム、並びに記憶媒体 |
JP2011048896A (ja) * | 2009-08-24 | 2011-03-10 | Thomson Licensing | 対物レンズ及び対物レンズを備えた光ピックアップ |
Also Published As
Publication number | Publication date |
---|---|
JP4891394B2 (ja) | 2012-03-07 |
JPWO2008120373A1 (ja) | 2010-07-15 |
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