JP5051178B2 - 光ディスク装置 - Google Patents
光ディスク装置 Download PDFInfo
- Publication number
- JP5051178B2 JP5051178B2 JP2009122781A JP2009122781A JP5051178B2 JP 5051178 B2 JP5051178 B2 JP 5051178B2 JP 2009122781 A JP2009122781 A JP 2009122781A JP 2009122781 A JP2009122781 A JP 2009122781A JP 5051178 B2 JP5051178 B2 JP 5051178B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- optical disc
- signal
- moving device
- optical
- 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.)
- Expired - Fee Related
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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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
- G11B7/13925—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means
- G11B7/13927—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means during transducing, e.g. to correct for variation of the spherical aberration due to disc tilt or irregularities in the cover layer thickness
-
- 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
-
- 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
- G11B7/0941—Methods and circuits for servo gain or phase compensation during operation
-
- 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
- G11B7/0903—Multi-beam tracking systems
-
- 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
- G11B7/0946—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 specially adapted for operation during external perturbations not related to the carrier or servo beam, e.g. vibration
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Description
2 トラッキングサーボ系
10 光ピックアップ
13 信号処理部
15 サーボ処理部
17 CPU
18 温度センサ
20 対物レンズアクチュエータ
30 レンズ移動装置
100 光ディスク
100a 情報記録層
101 光源
105 コリメートレンズ(可動レンズ)
107 対物レンズ
109 光検出器
131 TE信号生成部
152 信号増幅器
171 ゲイン信号制御部
Claims (3)
- 光源と、
前記光源から出射された光を光ディスクの情報記録層に集光する対物レンズと、
前記光源と前記対物レンズとの間の光路に配置され、球面収差の補正を行うために光軸方向の位置が調整される可動レンズと、
前記可動レンズを前記光軸方向に移動するレンズ移動装置と、
前記光源からの光が前記対物レンズによって集光されて形成される光スポットを前記光ディスクのトラックに追従させる対物レンズアクチュエータを有するトラッキングサーボ系と、
を備える光ディスク装置において、
前記レンズ移動装置によって前記可動レンズの移動を開始する時に、前記トラッキングサーボ系のサーボループゲインを所定値から予め定められた量だけ一時的に大きくし、前記可動レンズの移動終了後、前記サーボループゲインを前記所定値に戻すことを特徴とする光ディスク装置。 - 環境温度を検出する温度検出手段を更に備え、
前記温度検出手段で検出される温度に基づいて前記レンズ移動装置による前記可動レンズの移動が実行されることを特徴とする請求項1に記載の光ディスク装置。 - 前記可動レンズがコリメートレンズであることを特徴とする請求項1又は2に記載の光ディスク装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009122781A JP5051178B2 (ja) | 2009-05-21 | 2009-05-21 | 光ディスク装置 |
US12/783,063 US8264923B2 (en) | 2009-05-21 | 2010-05-19 | Optical disc device |
EP10163646.2A EP2254115B1 (en) | 2009-05-21 | 2010-05-21 | Optical disc device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009122781A JP5051178B2 (ja) | 2009-05-21 | 2009-05-21 | 光ディスク装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010272164A JP2010272164A (ja) | 2010-12-02 |
JP5051178B2 true JP5051178B2 (ja) | 2012-10-17 |
Family
ID=42727421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009122781A Expired - Fee Related JP5051178B2 (ja) | 2009-05-21 | 2009-05-21 | 光ディスク装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US8264923B2 (ja) |
EP (1) | EP2254115B1 (ja) |
JP (1) | JP5051178B2 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013077015A1 (ja) | 2011-11-24 | 2013-05-30 | 住友ゴム工業株式会社 | ゴム組成物及び空気入りタイヤ |
JP6050254B2 (ja) | 2011-12-26 | 2016-12-21 | 住友ゴム工業株式会社 | ゴム組成物及び空気入りタイヤ |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4764860A (en) * | 1985-06-26 | 1988-08-16 | Nippon Gakki Seizo Kabushiki Kaisha | Servo circuit for an information recording and/or reproducing apparatus |
JPH08339554A (ja) * | 1995-06-14 | 1996-12-24 | Matsushita Electric Ind Co Ltd | 光ディスク装置 |
JPH09180203A (ja) | 1995-12-25 | 1997-07-11 | Matsushita Electric Ind Co Ltd | 光ディスク制御装置 |
JP4288769B2 (ja) | 1999-07-09 | 2009-07-01 | コニカミノルタホールディングス株式会社 | 光情報記録媒体の記録および/または再生用集光光学系および光ピックアップ装置 |
JP3724999B2 (ja) * | 2000-03-08 | 2005-12-07 | パイオニア株式会社 | 光学式情報再生装置 |
KR100425460B1 (ko) * | 2001-08-29 | 2004-03-30 | 삼성전자주식회사 | 진동량 측정 장치 및 방법 그리고 루프 설계 방법 |
CN1277252C (zh) * | 2002-04-26 | 2006-09-27 | 松下电器产业株式会社 | 光盘装置、光束点的移动方法、在光盘装置中执行的程序 |
WO2004001731A1 (ja) * | 2002-06-21 | 2003-12-31 | Sharp Kabushiki Kaisha | 光ピックアップの球面収差補償方法、光ピックアップの球面収差合焦ずれ補償方法および光ピックアップ装置 |
JP4034205B2 (ja) | 2003-02-19 | 2008-01-16 | シャープ株式会社 | 光ピックアップ装置 |
JP4392193B2 (ja) | 2003-05-15 | 2009-12-24 | パイオニア株式会社 | 光ビームのフォーカシング制御装置 |
US7379398B2 (en) * | 2003-12-08 | 2008-05-27 | Matsushita Electric Industrial Co., Ltd. | Optical disc apparatus, an optical disc method, and a semiconductor integrated circuit capable of adjusting a focus position of a light beam and a spherical aberration |
CN100452190C (zh) * | 2004-04-23 | 2009-01-14 | 松下电器产业株式会社 | 对焦检测机构、跟踪检测机构以及光盘装置 |
DE602005021881D1 (de) * | 2004-07-06 | 2010-07-29 | Panasonic Corp | Optischer kopf und optisches plattenlaufwerk |
JP2007004854A (ja) * | 2005-06-22 | 2007-01-11 | Hitachi Ltd | 光ディスク装置 |
JP4400524B2 (ja) | 2005-07-21 | 2010-01-20 | 日本ビクター株式会社 | 光ディスク装置 |
JP4407623B2 (ja) * | 2005-11-18 | 2010-02-03 | ソニー株式会社 | 再生装置、球面収差補正値及びフォーカスバイアス調整方法 |
JP2007226904A (ja) * | 2006-02-24 | 2007-09-06 | Hitachi Ltd | 光ディスク装置 |
JP2007328827A (ja) | 2006-06-06 | 2007-12-20 | Hitachi Ltd | 光ディスク装置 |
JP2008034058A (ja) * | 2006-07-31 | 2008-02-14 | Funai Electric Co Ltd | 情報再生記録装置 |
DE602007009664D1 (de) | 2006-09-20 | 2010-11-18 | Konica Minolta Opto Inc | Optisches lesegerät, kontrolle für optisches lesegerät und kontrollmethode für optisches lesegerät |
JP2008103029A (ja) * | 2006-10-19 | 2008-05-01 | Kenwood Corp | 光ディスク再生装置、球面収差補正方法及び球面収差補正プログラム |
JP2008176868A (ja) * | 2007-01-19 | 2008-07-31 | Hitachi-Lg Data Storage Inc | ディスク装置及びその制御方法 |
JP2008310903A (ja) * | 2007-06-15 | 2008-12-25 | Sony Corp | 補正値設定装置及び補正値設定方法 |
JP5143031B2 (ja) * | 2008-01-22 | 2013-02-13 | パナソニック株式会社 | 光ディスクドライブ、光ディスクシステム、光ディスクシステムを搭載した移動体、プログラム、及び記録媒体 |
-
2009
- 2009-05-21 JP JP2009122781A patent/JP5051178B2/ja not_active Expired - Fee Related
-
2010
- 2010-05-19 US US12/783,063 patent/US8264923B2/en not_active Expired - Fee Related
- 2010-05-21 EP EP10163646.2A patent/EP2254115B1/en not_active Not-in-force
Also Published As
Publication number | Publication date |
---|---|
US20100296376A1 (en) | 2010-11-25 |
EP2254115B1 (en) | 2015-02-25 |
EP2254115A3 (en) | 2011-01-05 |
JP2010272164A (ja) | 2010-12-02 |
EP2254115A2 (en) | 2010-11-24 |
US8264923B2 (en) | 2012-09-11 |
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