TW226046B - - Google Patents
Info
- Publication number
- TW226046B TW226046B TW081101051A TW81101051A TW226046B TW 226046 B TW226046 B TW 226046B TW 081101051 A TW081101051 A TW 081101051A TW 81101051 A TW81101051 A TW 81101051A TW 226046 B TW226046 B TW 226046B
- Authority
- TW
- Taiwan
- Prior art keywords
- signal
- tracks
- beams
- derived
- position signal
- Prior art date
Links
- 238000001514 detection method Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
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
- G11B7/0943—Methods and circuits for performing mathematical operations on individual detector segment outputs
-
- 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
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
- G11B7/08517—Methods for track change, selection or preliminary positioning by moving the head with tracking pull-in 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Optical Recording Or Reproduction (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Microscoopes, Condenser (AREA)
- Holo Graphy (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP91201139 | 1991-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW226046B true TW226046B (zh) | 1994-07-01 |
Family
ID=8207652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW081101051A TW226046B (zh) | 1991-05-10 | 1992-02-14 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5173598A (zh) |
| EP (1) | EP0512625B1 (zh) |
| JP (1) | JP3720851B2 (zh) |
| CN (1) | CN1032276C (zh) |
| AT (1) | ATE157796T1 (zh) |
| DE (1) | DE69221931T2 (zh) |
| TW (1) | TW226046B (zh) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1069640A (ja) * | 1996-08-27 | 1998-03-10 | Mitsumi Electric Co Ltd | Ｃｄ−ｒドライブにおけるウォブル信号生成方法 |
| TW444201B (en) * | 1998-02-16 | 2001-07-01 | Hitachi Ltd | Optical head |
| KR100766801B1 (ko) | 1999-12-24 | 2007-10-17 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 광학 헤드 및 주사장치 |
| WO2001048748A1 (en) * | 1999-12-24 | 2001-07-05 | Koninklijke Philips Electronics N.V. | Optical wavefront modifier |
| DE10041569A1 (de) * | 2000-08-24 | 2002-03-07 | Thomson Brandt Gmbh | Verfahren zum Erzeugen eines korrigierten Fehlersignals sowie entsprechendes Gerät |
| DE10062079A1 (de) | 2000-12-13 | 2002-06-27 | Thomson Brandt Gmbh | Verfahren zum Spurzählen und entsprechendes Gerät zum Lesen und/oder Beschreiben eines optischen Aufzeichnungsträgers |
| DE10062078A1 (de) * | 2000-12-13 | 2002-06-20 | Thomson Brandt Gmbh | Verfahren zum Erzeugen eines Linsenpositionssignals sowie entsprechendes Gerät zum Lesen und/oder Beschreiben eines optischen Aufzeichnungsträgers |
| JP2002319151A (ja) | 2001-04-24 | 2002-10-31 | Sharp Corp | 光ピックアップ装置 |
| EP1527445B1 (en) * | 2002-07-30 | 2008-08-20 | Koninklijke Philips Electronics N.V. | Disc drive apparatus |
| US7140409B2 (en) * | 2004-11-01 | 2006-11-28 | Matthew Leberfinger | Portable pipe cutting apparatus |
| WO2006059276A1 (en) | 2004-12-02 | 2006-06-08 | Koninklijke Philips Electronics N.V. | Method and device for sensitivity compensation |
| WO2007000682A1 (en) * | 2005-06-27 | 2007-01-04 | Arima Devices Corporation | Optical pick-up unit for use in an optical player |
| EP1938320A2 (en) * | 2005-09-19 | 2008-07-02 | Arima Devices Corporation | An optical pickup having aberration correction |
| CN104317049B (zh) * | 2014-10-15 | 2017-07-04 | 合肥工业大学 | 双偏心调整光路装置 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4340950A (en) * | 1979-10-12 | 1982-07-20 | Universal Pioneer Corporation | Video disc player |
| US4462095A (en) * | 1982-03-19 | 1984-07-24 | Magnetic Peripherals Inc. | Moving diffraction grating for an information track centering system for optical recording |
| JPS6194246A (ja) * | 1984-10-15 | 1986-05-13 | Sony Corp | 光学式ヘッドのトラッキング誤差検出方法 |
| NL8500153A (nl) * | 1985-01-22 | 1986-08-18 | Philips Nv | Registratiedragerlichaam voorzien van een reliefstruktuur van optisch detekteerbare servospoorgedeelten en sektoradressen en inrichting voor het aanbrengen van deze struktuur. |
| US4750162A (en) * | 1985-07-16 | 1988-06-07 | Victor Company Of Japan, Ltd. | Optical tracking system utilizing three photo-detectors |
| DE3672426D1 (de) * | 1985-09-27 | 1990-08-09 | Sharp Kk | Spurnachlaufverfahren fuer eine optische speicherplatte. |
| JPS639034A (ja) * | 1986-06-30 | 1988-01-14 | Canon Inc | 光学的情報記録再生装置 |
| US5066138A (en) * | 1988-06-16 | 1991-11-19 | Mitsubishi Denki Kabushiki Kaisha | Optical head apparatus |
| JPH035927A (ja) * | 1989-06-01 | 1991-01-11 | Sony Corp | 光学記録および／または再生装置 |
| JPH0354733A (ja) * | 1989-07-21 | 1991-03-08 | Sony Corp | 光学記録および／または再生装置 |
-
1991
- 1991-07-22 US US07/733,926 patent/US5173598A/en not_active Expired - Lifetime
-
1992
- 1992-02-14 TW TW081101051A patent/TW226046B/zh active
- 1992-05-04 DE DE69221931T patent/DE69221931T2/de not_active Expired - Fee Related
- 1992-05-04 EP EP92201218A patent/EP0512625B1/en not_active Expired - Lifetime
- 1992-05-04 AT AT92201218T patent/ATE157796T1/de not_active IP Right Cessation
- 1992-05-07 CN CN92103463A patent/CN1032276C/zh not_active Expired - Fee Related
- 1992-05-11 JP JP11754592A patent/JP3720851B2/ja not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0512625A2 (en) | 1992-11-11 |
| DE69221931T2 (de) | 1998-03-05 |
| ATE157796T1 (de) | 1997-09-15 |
| EP0512625A3 (en) | 1992-12-02 |
| DE69221931D1 (de) | 1997-10-09 |
| US5173598A (en) | 1992-12-22 |
| JP3720851B2 (ja) | 2005-11-30 |
| JPH05128548A (ja) | 1993-05-25 |
| CN1066733A (zh) | 1992-12-02 |
| CN1032276C (zh) | 1996-07-10 |
| EP0512625B1 (en) | 1997-09-03 |
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