JP4304504B2 - 最適化されたトラッキング方法 - Google Patents
最適化されたトラッキング方法 Download PDFInfo
- Publication number
- JP4304504B2 JP4304504B2 JP2004512133A JP2004512133A JP4304504B2 JP 4304504 B2 JP4304504 B2 JP 4304504B2 JP 2004512133 A JP2004512133 A JP 2004512133A JP 2004512133 A JP2004512133 A JP 2004512133A JP 4304504 B2 JP4304504 B2 JP 4304504B2
- Authority
- JP
- Japan
- Prior art keywords
- track
- error signal
- offset
- offset value
- track error
- 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
- G11B7/08—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
-
- 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
- G11B7/094—Methods and circuits for servo offset compensation
-
- 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
- G11B7/0901—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
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
1L ランドトラック
2、2´ トラックの中心
3 情報マーク
4 トラックの中心
5 光学記録媒体
6 ビーム
7 集束レンズ
8 光点
9 光検知器
10 トラックエラー信号曲線
12 値
12´ 中心の値
14 線
15 トラック制御装置
16 ヘッダー領域検知器
17 トラックタイプ検知器
18 制御装置
19 タイミング回路
20 サンプル及び保持要素
21 オフセット発生器ステージ
TE トラックエラー信号
TECL 閉トラック制御ループの場合のトラックエラー信号
DWP 検知ウィンドウパルス
PPTE トラックエラー信号
HF データ信号
TO オフセット
PS 極性切り替えスイッチ
Claims (5)
- 光学記録媒体のトラックに沿って、光学スキャナの最適化されたトラッキングを行う方法であって、
該トラックは、高密度に連続して配置された情報マークと、極めて低密度な基本的特性の変化を有しており、
トラックエラー信号を形成するステップと、
トラックの基本的特性の変化の発生を検知するステップと、
前記基本的特性の変化の直前及び直後に発生する前記トラックエラー信号の値の差を形成することによりオフセット値を生成するステップと、
前記オフセット値を考慮にいれたトラックエラー信号を形成するステップと、
を繰り返す方法。 - 前記トラックの基本的特性の変化の発生の検知が、ヘッダー領域の検知によりもたらされることを特徴とする、請求項1に記載の方法。
- 前記トラックエラー信号が、プッシュプル方法、3ビーム方法及び差動プッシュプル方法によるトラッキング方法のうちの1つを用いて形成されることを特徴とする、請求項1に記載の方法。
- 前記スキャナのトラックオフセットにより損なわれる別の信号が、前記トラックエラー信号の代わりに形成されることを特徴とする、請求項1に記載の方法。
- 高密度に連続して配置された情報マークと、極めて低密度な基本的特性の変化を有するトラックを含む光学記録媒体の記録及び/又は再生装置であって、
トラック制御ループと、トラック特性変化検知器と、オフセット値検知器とを備えており、
前記オフセット値検知器は、トラック特性変化検知器の出力信号に基づき、トラックの基本的特性変化の検出直前及び直後における、トラック制御ループのトラックエラー信号の値の差を形成することによりオフセット値を生成し、前記オフセット値を前記トラック制御ループに与える、
装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10225271 | 2002-06-07 | ||
PCT/EP2003/005902 WO2003105142A1 (de) | 2002-06-07 | 2003-06-05 | Verfahren zum optimierten spurführen |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2005531092A JP2005531092A (ja) | 2005-10-13 |
JP2005531092A5 JP2005531092A5 (ja) | 2009-03-12 |
JP4304504B2 true JP4304504B2 (ja) | 2009-07-29 |
Family
ID=29723096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004512133A Expired - Fee Related JP4304504B2 (ja) | 2002-06-07 | 2003-06-05 | 最適化されたトラッキング方法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7468935B2 (ja) |
EP (1) | EP1512145B1 (ja) |
JP (1) | JP4304504B2 (ja) |
KR (1) | KR20040107518A (ja) |
CN (1) | CN100501842C (ja) |
AU (1) | AU2003242630A1 (ja) |
DE (1) | DE50305189D1 (ja) |
WO (1) | WO2003105142A1 (ja) |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4866688A (en) * | 1985-12-20 | 1989-09-12 | Hitachi, Ltd. | Composite tracking servo system for optical disc apparatus with track offset correction |
US5251194A (en) * | 1989-04-17 | 1993-10-05 | Mitsubishi Denki Kabushiki Kaisha | Techniques for controlling beam position and focus in optical disk drives |
US5268887A (en) * | 1990-05-15 | 1993-12-07 | Kabushiki Kaisha Toshiba | Optical recording medium having offset-compensating areas |
US5517485A (en) * | 1993-02-26 | 1996-05-14 | Matsushita Electric Industrial Co., Ltd. | Optical information recording medium having first and second tracks and apparatus for recording to and reproducing from the medium |
JP3063596B2 (ja) * | 1995-11-24 | 2000-07-12 | 三菱電機株式会社 | 光ディスク装置および光ディスク |
JPH09167359A (ja) | 1995-12-14 | 1997-06-24 | Hitachi Ltd | トラッキングおよびトラックジャンプ制御装置 |
JPH09231588A (ja) | 1996-02-26 | 1997-09-05 | Ricoh Co Ltd | 光ディスクドライブ |
JP3063613B2 (ja) * | 1996-03-25 | 2000-07-12 | 三菱電機株式会社 | 光ディスク媒体及び光ディスク装置 |
JPH09320065A (ja) | 1996-06-04 | 1997-12-12 | Nikon Corp | 情報再生装置 |
JP2845224B2 (ja) * | 1996-11-15 | 1999-01-13 | 日本電気株式会社 | ランド/グルーブ検出装置 |
DE19723542A1 (de) * | 1997-06-05 | 1998-12-10 | Thomson Brandt Gmbh | Gerät zum Lesen und/oder Beschreiben optischer Aufzeichnungsträger |
KR19990016488A (ko) * | 1997-08-16 | 1999-03-05 | 구자홍 | 트랙킹 제어 장치 및 그 방법 |
US6310838B1 (en) * | 1997-09-03 | 2001-10-30 | U.S. Philips Corporation | Record carrier and apparatus for scanning the record carrier |
KR100300998B1 (ko) * | 1998-04-17 | 2001-09-06 | 윤종용 | 랜드/그루브 절환 신호 발생방법 및 장치 |
US6314066B1 (en) * | 1999-07-21 | 2001-11-06 | Lg Electronics Inc. | Method for controlling track jump in optical recording medium |
US6822935B1 (en) * | 1999-09-16 | 2004-11-23 | Lg Electronics Inc. | Track discriminating apparatus and method for optical recording medium |
KR100630006B1 (ko) * | 2000-01-26 | 2006-09-28 | 엘지전자 주식회사 | 광기록재생기의 트래킹 제어방법 |
US6928035B2 (en) * | 2000-07-07 | 2005-08-09 | Matsushita Electric Industrial Co., Ltd. | Optical pick-up, optical disk apparatus and information processing apparatus |
KR100379399B1 (ko) * | 2000-10-02 | 2003-04-10 | 엘지전자 주식회사 | 광 기록매체의 헤더 영역 검출 방법 및 장치와 이를이용한 기록 재생 방법 |
-
2003
- 2003-06-05 DE DE50305189T patent/DE50305189D1/de not_active Expired - Fee Related
- 2003-06-05 AU AU2003242630A patent/AU2003242630A1/en not_active Abandoned
- 2003-06-05 EP EP03757027A patent/EP1512145B1/de not_active Expired - Lifetime
- 2003-06-05 KR KR10-2004-7018001A patent/KR20040107518A/ko not_active Application Discontinuation
- 2003-06-05 CN CNB038131684A patent/CN100501842C/zh not_active Expired - Fee Related
- 2003-06-05 US US10/517,467 patent/US7468935B2/en not_active Expired - Fee Related
- 2003-06-05 JP JP2004512133A patent/JP4304504B2/ja not_active Expired - Fee Related
- 2003-06-05 WO PCT/EP2003/005902 patent/WO2003105142A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
EP1512145B1 (de) | 2006-09-27 |
CN100501842C (zh) | 2009-06-17 |
DE50305189D1 (de) | 2006-11-09 |
KR20040107518A (ko) | 2004-12-20 |
CN1659635A (zh) | 2005-08-24 |
WO2003105142A1 (de) | 2003-12-18 |
JP2005531092A (ja) | 2005-10-13 |
US7468935B2 (en) | 2008-12-23 |
US20050213457A1 (en) | 2005-09-29 |
EP1512145A1 (de) | 2005-03-09 |
AU2003242630A1 (en) | 2003-12-22 |
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