TW200501125A - Method and device for measuring the tilt of an optical disc - Google Patents
Method and device for measuring the tilt of an optical discInfo
- Publication number
- TW200501125A TW200501125A TW093107556A TW93107556A TW200501125A TW 200501125 A TW200501125 A TW 200501125A TW 093107556 A TW093107556 A TW 093107556A TW 93107556 A TW93107556 A TW 93107556A TW 200501125 A TW200501125 A TW 200501125A
- Authority
- TW
- Taiwan
- Prior art keywords
- tilt
- optical disc
- measuring
- res
- phase
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title abstract 4
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
- G11B7/095—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 discs, e.g. for compensation of eccentricity or wobble
-
- 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
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
- G11B7/127—Lasers; Multiple laser arrays
- G11B7/1275—Two or more lasers having different wavelengths
-
- 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
- G11B7/0945—Methods for initialising servos, start-up sequences
-
- 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
- G11B7/095—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 discs, e.g. for compensation of eccentricity or wobble
- G11B7/0956—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 discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc
-
- 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
- G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
- G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Length Measuring Devices By Optical Means (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03100760 | 2003-03-24 | ||
EP04300060 | 2004-02-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
TW200501125A true TW200501125A (en) | 2005-01-01 |
Family
ID=33099711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW093107556A TW200501125A (en) | 2003-03-24 | 2004-03-19 | Method and device for measuring the tilt of an optical disc |
Country Status (8)
Country | Link |
---|---|
US (1) | US7457217B2 (zh) |
EP (1) | EP1609140B1 (zh) |
JP (1) | JP2006521646A (zh) |
KR (1) | KR20050114257A (zh) |
AT (1) | ATE365365T1 (zh) |
DE (1) | DE602004007118T2 (zh) |
TW (1) | TW200501125A (zh) |
WO (1) | WO2004086386A1 (zh) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007049893A1 (en) * | 2005-10-24 | 2007-05-03 | Lg Electronics Inc. | An apparatus and method for recording/reproducing data on/from a recording medium |
EP1964116A2 (en) * | 2005-12-13 | 2008-09-03 | Koninklijke Philips Electronics N.V. | Method of lens positioning for tilt compensation, method and apparatus for reading and recording data onto an optical disc |
TW201225075A (en) * | 2010-12-02 | 2012-06-16 | Quanta Storage Inc | Method for detecting obliquity of optical disc drive |
WO2016185581A1 (ja) * | 2015-05-20 | 2016-11-24 | オリンパス株式会社 | 標本形状測定方法及び標本形状測定装置 |
JPWO2018092247A1 (ja) * | 2016-11-17 | 2019-10-10 | オリンパス株式会社 | 標本形状測定方法及び標本形状測定装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3447135B2 (ja) * | 1995-02-02 | 2003-09-16 | パイオニア株式会社 | 情報再生装置 |
JP3176544B2 (ja) * | 1995-12-13 | 2001-06-18 | 株式会社日立製作所 | 光ディスク装置 |
US6304526B1 (en) * | 1998-03-12 | 2001-10-16 | Matsushita Electric Industrial Co., Ltd. | Optical head |
JP3619371B2 (ja) * | 1998-08-31 | 2005-02-09 | 株式会社リコー | 光ピックアップ装置及びそのチルト検出方法 |
US6545958B1 (en) * | 1998-08-31 | 2003-04-08 | Ricoh Company, Ltd. | Optical-pickup device and tilt-detecting method thereof |
TW440818B (en) * | 1999-06-05 | 2001-06-16 | Ind Tech Res Inst | Device and method for obtaining and calibrating compact disk's tilt error signals |
JP3674565B2 (ja) * | 2001-09-25 | 2005-07-20 | ティアック株式会社 | 光ディスク装置 |
-
2004
- 2004-03-10 JP JP2006506366A patent/JP2006521646A/ja not_active Withdrawn
- 2004-03-10 US US10/549,636 patent/US7457217B2/en not_active Expired - Fee Related
- 2004-03-10 DE DE602004007118T patent/DE602004007118T2/de not_active Expired - Fee Related
- 2004-03-10 WO PCT/IB2004/000831 patent/WO2004086386A1/en active IP Right Grant
- 2004-03-10 KR KR1020057017723A patent/KR20050114257A/ko not_active Application Discontinuation
- 2004-03-10 AT AT04719028T patent/ATE365365T1/de not_active IP Right Cessation
- 2004-03-10 EP EP04719028A patent/EP1609140B1/en not_active Expired - Lifetime
- 2004-03-19 TW TW093107556A patent/TW200501125A/zh unknown
Also Published As
Publication number | Publication date |
---|---|
US7457217B2 (en) | 2008-11-25 |
KR20050114257A (ko) | 2005-12-05 |
ATE365365T1 (de) | 2007-07-15 |
WO2004086386A1 (en) | 2004-10-07 |
EP1609140A1 (en) | 2005-12-28 |
DE602004007118D1 (de) | 2007-08-02 |
DE602004007118T2 (de) | 2008-02-21 |
EP1609140B1 (en) | 2007-06-20 |
JP2006521646A (ja) | 2006-09-21 |
US20060250914A1 (en) | 2006-11-09 |
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