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 PDF

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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
Application number
PCT/JP2007/056934
Other languages
English (en)
French (fr)
Inventor
Kazuo Kuroda
Eiji Muramatsu
Kunihiko Horikawa
Atsushi Yamaguchi
Masahiro Miura
Kazutoshi Kitano
Original Assignee
Pioneer Corporation
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 Pioneer Corporation filed Critical Pioneer Corporation
Priority to JP2009507364A priority Critical patent/JP4891394B2/ja
Priority to PCT/JP2007/056934 priority patent/WO2008120373A1/ja
Publication of WO2008120373A1 publication Critical patent/WO2008120373A1/ja

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。
PCT/JP2007/056934 2007-03-29 2007-03-29 再生装置、及びギャップ制御方法 WO2008120373A1 (ja)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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