IL126392A - Method and device for focusing a radiant energy beam - Google Patents
Method and device for focusing a radiant energy beamInfo
- Publication number
- IL126392A IL126392A IL12639297A IL12639297A IL126392A IL 126392 A IL126392 A IL 126392A IL 12639297 A IL12639297 A IL 12639297A IL 12639297 A IL12639297 A IL 12639297A IL 126392 A IL126392 A IL 126392A
- Authority
- IL
- Israel
- Prior art keywords
- signal
- output
- tracking
- error signal
- periodic
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 9
- 230000000737 periodic effect Effects 0.000 claims abstract description 44
- 238000006073 displacement reaction Methods 0.000 claims abstract description 18
- 230000003287 optical effect Effects 0.000 claims description 47
- 238000001514 detection method Methods 0.000 claims description 9
- 230000004044 response Effects 0.000 claims description 6
- 230000006870 function Effects 0.000 description 51
- 238000012545 processing Methods 0.000 description 31
- 238000011084 recovery Methods 0.000 description 18
- 230000015654 memory Effects 0.000 description 13
- 230000000295 complement effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 4
- 230000010363 phase shift Effects 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/13—Optical detectors therefor
- G11B7/133—Shape of individual detector elements
-
- 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
-
- 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
- G11B7/0908—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 focusing 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
- G11B7/0946—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
-
- 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
- G11B7/0948—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 detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts
-
- 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
Landscapes
- Optics & Photonics (AREA)
- Physics & Mathematics (AREA)
- Optical Recording Or Reproduction (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Lasers (AREA)
- Control Of Eletrric Generators (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Recrystallisation Techniques (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Optical Head (AREA)
- Paper (AREA)
- Tires In General (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Geophysics And Detection Of Objects (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/625,273 US5689485A (en) | 1996-04-01 | 1996-04-01 | Tracking control apparatus and method |
| PCT/US1997/004731 WO1997037347A1 (en) | 1996-04-01 | 1997-03-24 | Closed loop servo operation for focus control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL126392A0 IL126392A0 (en) | 1999-05-09 |
| IL126392A true IL126392A (en) | 2004-08-31 |
Family
ID=24505325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL12639297A IL126392A (en) | 1996-04-01 | 1997-03-24 | Method and device for focusing a radiant energy beam |
Country Status (19)
| Country | Link |
|---|---|
| US (3) | US5689485A (ja) |
| EP (2) | EP0800166B1 (ja) |
| JP (2) | JP3239293B2 (ja) |
| KR (1) | KR100306541B1 (ja) |
| CN (2) | CN1099669C (ja) |
| AT (2) | ATE195606T1 (ja) |
| AU (2) | AU688234B2 (ja) |
| BR (2) | BR9708479B1 (ja) |
| CA (2) | CA2200286C (ja) |
| DE (3) | DE69702799T2 (ja) |
| DK (1) | DK0800166T3 (ja) |
| ES (1) | ES2118687T3 (ja) |
| ID (1) | ID16516A (ja) |
| IL (1) | IL126392A (ja) |
| MY (1) | MY119172A (ja) |
| NO (1) | NO316555B1 (ja) |
| PT (1) | PT800166E (ja) |
| SG (1) | SG47213A1 (ja) |
| WO (1) | WO1997037347A1 (ja) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5689485A (en) | 1996-04-01 | 1997-11-18 | Discovision Associates | Tracking control apparatus and method |
| EP0936602B1 (en) * | 1998-02-13 | 2006-09-20 | Yamaha Corporation | Optical disk recording technique capable of forming pits accurately centered on track and servo-balance adjusting technique for optical disk recording |
| JP2000113614A (ja) | 1998-10-09 | 2000-04-21 | Sony Corp | ドライブ装置、定速移動サーボ方法 |
| DE19930513A1 (de) * | 1999-07-05 | 2001-01-11 | Thomson Brandt Gmbh | Gerät zum Abtasten optischer Aufzeichnungsträger |
| US6744711B1 (en) * | 2000-06-20 | 2004-06-01 | Discovision Associates | Method and apparatus for a high-speed search of an optical medium |
| JP2002203324A (ja) * | 2000-10-25 | 2002-07-19 | Sony Computer Entertainment Inc | フォーカス制御装置、フォーカス制御方法 |
| US7522480B2 (en) | 2001-01-25 | 2009-04-21 | Dphi Acquisitions, Inc. | Digital tracking servo system with multi-track seek with an acceleration clamp |
| US7113360B2 (en) * | 2002-06-28 | 2006-09-26 | Seagate Technology Llc | Manufacture of concentric patterns from spiral source |
| KR100498455B1 (ko) * | 2002-11-07 | 2005-07-01 | 삼성전자주식회사 | 서보 시스템의 루프이득을 제어하기 위한 장치 및 방법 |
| US7450483B2 (en) * | 2003-04-28 | 2008-11-11 | Panasonic Corporation | Information carrier apparatus and information carrier eccentricity correction method |
| JP4361090B2 (ja) * | 2003-05-16 | 2009-11-11 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 拡張焦点制御装置及び方法 |
| EP1756814A1 (en) * | 2004-06-01 | 2007-02-28 | Koninklijke Philips Electronics N.V. | Radial to focus cross talk cancellation in optical storage systems. |
| EP1769497A1 (en) * | 2004-07-14 | 2007-04-04 | Koninklijke Philips Electronics N.V. | Improved tracking error signal calibration method, and disc drive implementing such method. |
| CN1985312A (zh) * | 2004-07-14 | 2007-06-20 | 皇家飞利浦电子股份有限公司 | 改进的跟踪误差信号校正方法和执行这种方法的盘驱动器 |
| JP4256353B2 (ja) * | 2005-02-17 | 2009-04-22 | ファナック株式会社 | サーボ制御装置及びサーボ系の調整方法 |
| EP1804100B1 (en) * | 2005-12-30 | 2018-02-21 | Datalogic IP TECH S.r.l. | Device and method for focusing a laser light beam |
| JP2009069041A (ja) * | 2007-09-14 | 2009-04-02 | Fujinon Corp | 光ピックアップ用波面測定装置 |
| CN115047215B (zh) * | 2022-02-18 | 2023-03-21 | 太原理工大学 | 三轴振动加速度信号耦合修正检测系统及方法 |
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| US4796098A (en) * | 1981-12-04 | 1989-01-03 | Discovision Associates | Banded and interleaved video disc format with duplicate information stored at different disc locations |
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1997
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- 1997-03-12 SG SG1997000709A patent/SG47213A1/en unknown
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- 1997-03-19 AT AT97104720T patent/ATE195606T1/de active
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