TW200849232A - Method for tracking the information track of an optical disc - Google Patents
Method for tracking the information track of an optical disc Download PDFInfo
- Publication number
- TW200849232A TW200849232A TW97110243A TW97110243A TW200849232A TW 200849232 A TW200849232 A TW 200849232A TW 97110243 A TW97110243 A TW 97110243A TW 97110243 A TW97110243 A TW 97110243A TW 200849232 A TW200849232 A TW 200849232A
- Authority
- TW
- Taiwan
- Prior art keywords
- spot
- radiation beam
- main
- signal
- light
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000005855 radiation Effects 0.000 claims abstract description 72
- 230000000694 effects Effects 0.000 claims abstract description 8
- 239000004973 liquid crystal related substance Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 16
- 238000012937 correction Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims description 2
- 239000005262 ferroelectric liquid crystals (FLCs) Substances 0.000 claims description 2
- 239000003814 drug Substances 0.000 claims 1
- 229940079593 drug Drugs 0.000 claims 1
- 244000062645 predators Species 0.000 claims 1
- 210000004027 cell Anatomy 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 235000009300 Ehretia acuminata Nutrition 0.000 description 1
- 244000046038 Ehretia acuminata Species 0.000 description 1
- 241000283973 Oryctolagus cuniculus Species 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 210000002858 crystal cell Anatomy 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 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
- G11B7/08—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
- G11B7/12—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
- G11B7/1353—Diffractive elements, e.g. holograms or gratings
-
- 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
- G11B2007/0009—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage
- G11B2007/0013—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage for carriers having multiple discrete layers
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07104755 | 2007-03-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW200849232A true TW200849232A (en) | 2008-12-16 |
Family
ID=39592754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW97110243A TW200849232A (en) | 2007-03-23 | 2008-03-21 | Method for tracking the information track of an optical disc |
Country Status (2)
| Country | Link |
|---|---|
| TW (1) | TW200849232A (fr) |
| WO (1) | WO2008117228A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8520483B2 (en) | 2010-07-29 | 2013-08-27 | General Electric Company | Method and system for processing information from optical disk layers |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09161295A (ja) * | 1995-12-12 | 1997-06-20 | Sony Corp | 多層光ディスクのトラッキング制御装置 |
| JP2002074727A (ja) * | 2000-09-01 | 2002-03-15 | Samsung Electro Mech Co Ltd | ダイナミック制御回折格子並びに情報記録再生装置と情報再生装置 |
| JP4156484B2 (ja) * | 2003-09-30 | 2008-09-24 | シャープ株式会社 | 光ピックアップ |
| US8189434B2 (en) * | 2004-04-30 | 2012-05-29 | Sharp Kabushiki Kaisha | Optical pickup unit and optical pickup device having same and information writing/reading device having same |
| JP4379209B2 (ja) * | 2004-06-07 | 2009-12-09 | ソニー株式会社 | 光ヘッド装置、記録再生装置、トラッキングエラー信号生成方法 |
| JP4608496B2 (ja) * | 2004-08-06 | 2011-01-12 | パイオニア株式会社 | 光状態認識装置、情報処理装置、および、光状態認識方法 |
-
2008
- 2008-03-21 TW TW97110243A patent/TW200849232A/zh unknown
- 2008-03-24 WO PCT/IB2008/051087 patent/WO2008117228A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008117228A1 (fr) | 2008-10-02 |
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