TW200746117A - Method and apparatus for detecting cracks in an optical record carrier - Google Patents
Method and apparatus for detecting cracks in an optical record carrierInfo
- Publication number
- TW200746117A TW200746117A TW095145165A TW95145165A TW200746117A TW 200746117 A TW200746117 A TW 200746117A TW 095145165 A TW095145165 A TW 095145165A TW 95145165 A TW95145165 A TW 95145165A TW 200746117 A TW200746117 A TW 200746117A
- Authority
- TW
- Taiwan
- Prior art keywords
- record carrier
- reading
- control signal
- signal
- error signal
- Prior art date
Links
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
- G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
- G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
- G11B7/00375—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs arrangements for detection of physical defects, e.g. of recording layer
-
- 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
- G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
- G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
-
- 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
- G11B7/0948—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
Landscapes
- Optical Recording Or Reproduction (AREA)
- Manufacturing Optical Record Carriers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP05111820 | 2005-12-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW200746117A true TW200746117A (en) | 2007-12-16 |
Family
ID=37807844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW095145165A TW200746117A (en) | 2005-12-08 | 2006-12-05 | Method and apparatus for detecting cracks in an optical record carrier |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20080304381A1 (zh) |
| EP (1) | EP1961001A1 (zh) |
| JP (1) | JP2009518768A (zh) |
| KR (1) | KR20080078874A (zh) |
| CN (1) | CN101326575A (zh) |
| TW (1) | TW200746117A (zh) |
| WO (1) | WO2007066251A1 (zh) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4683559A (en) * | 1983-04-20 | 1987-07-28 | Ricoh Company, Ltd. | Optical pickup with a two-detector arrangement |
| US5245599A (en) * | 1988-10-05 | 1993-09-14 | Pioneer Electronic Corp. | Disc player using a servo loop with a variable transfer function |
| JPH0636473A (ja) * | 1992-07-16 | 1994-02-10 | Matsushita Electric Ind Co Ltd | 光情報記録装置及びその方法 |
| US6034831A (en) * | 1997-05-09 | 2000-03-07 | International Business Machines Corporation | Dynamic reverse reassign apparatus and method for a data recording disk drive |
| JPH11213626A (ja) * | 1998-01-21 | 1999-08-06 | Toshiba Corp | データ記録媒体とデータ記録装置とデータ再生装置 |
| JP3869363B2 (ja) * | 2000-07-21 | 2007-01-17 | 富士通株式会社 | 光ディスク装置、光ディスクのフォーマット方法、および光ディスク |
| KR100408396B1 (ko) * | 2001-02-05 | 2003-12-06 | 삼성전자주식회사 | 디스크 크랙 검출 방법 및 이를 이용한 디스크 드라이브의배속 제어 방법 |
| US7596062B2 (en) * | 2003-09-09 | 2009-09-29 | Lg Electronics Inc. | Method of preventing optical recording media from being fractured and apparatus thereof |
| US7298677B2 (en) * | 2004-07-28 | 2007-11-20 | Hewlett-Packard Development Company, L.P. | Optical disc drive apparatus and method |
-
2006
- 2006-11-16 EP EP06821474A patent/EP1961001A1/en not_active Withdrawn
- 2006-11-16 JP JP2008543949A patent/JP2009518768A/ja active Pending
- 2006-11-16 US US12/096,190 patent/US20080304381A1/en not_active Abandoned
- 2006-11-16 CN CNA2006800459995A patent/CN101326575A/zh active Pending
- 2006-11-16 WO PCT/IB2006/054296 patent/WO2007066251A1/en active Application Filing
- 2006-11-16 KR KR1020087016454A patent/KR20080078874A/ko not_active Application Discontinuation
- 2006-12-05 TW TW095145165A patent/TW200746117A/zh unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009518768A (ja) | 2009-05-07 |
| US20080304381A1 (en) | 2008-12-11 |
| EP1961001A1 (en) | 2008-08-27 |
| KR20080078874A (ko) | 2008-08-28 |
| CN101326575A (zh) | 2008-12-17 |
| WO2007066251A1 (en) | 2007-06-14 |
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