JPH08509567A - 光学走査装置 - Google Patents
光学走査装置Info
- Publication number
- JPH08509567A JPH08509567A JP7521690A JP52169095A JPH08509567A JP H08509567 A JPH08509567 A JP H08509567A JP 7521690 A JP7521690 A JP 7521690A JP 52169095 A JP52169095 A JP 52169095A JP H08509567 A JPH08509567 A JP H08509567A
- Authority
- JP
- Japan
- Prior art keywords
- detector
- signal
- auxiliary
- generating
- tracking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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
- G11B7/08—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
- G11B7/0901—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
Landscapes
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP94200438 | 1994-02-22 | ||
| EP94200438.3 | 1994-02-22 | ||
| PCT/IB1995/000065 WO1995022822A1 (en) | 1994-02-22 | 1995-01-31 | Optical scanning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08509567A true JPH08509567A (ja) | 1996-10-08 |
Family
ID=8216657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7521690A Pending JPH08509567A (ja) | 1994-02-22 | 1995-01-31 | 光学走査装置 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20010024409A1 (en, 2012) |
| EP (1) | EP0702824A1 (en, 2012) |
| JP (1) | JPH08509567A (en, 2012) |
| KR (1) | KR960702149A (en, 2012) |
| CN (1) | CN1048106C (en, 2012) |
| SG (1) | SG49121A1 (en, 2012) |
| TW (1) | TW276336B (en, 2012) |
| WO (1) | WO1995022822A1 (en, 2012) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008518380A (ja) * | 2004-10-26 | 2008-05-29 | 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 | 光学記録装置の補正利得 |
| WO2007042978A1 (en) * | 2005-10-14 | 2007-04-19 | Koninklijke Philips Electronics N.V. | Device and method for scanning an optical recording medium and optical recording medium |
| EP2009626A1 (en) | 2007-06-29 | 2008-12-31 | Deutsche Thomson OHG | Apparatus comprising a pickup unit providing three beams for reading data from or writing data to an optical storage medium, and respective optical storage medium |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW221074B (en, 2012) * | 1991-05-10 | 1994-02-11 | Philips Nv | |
| EP0525896B1 (en) * | 1991-08-01 | 1997-01-02 | Koninklijke Philips Electronics N.V. | Compatible optical scanning device |
-
1995
- 1995-01-31 SG SG1996006218A patent/SG49121A1/en unknown
- 1995-01-31 KR KR1019950704505A patent/KR960702149A/ko not_active Abandoned
- 1995-01-31 CN CN95190098A patent/CN1048106C/zh not_active Expired - Fee Related
- 1995-01-31 JP JP7521690A patent/JPH08509567A/ja active Pending
- 1995-01-31 WO PCT/IB1995/000065 patent/WO1995022822A1/en not_active Application Discontinuation
- 1995-01-31 EP EP95905741A patent/EP0702824A1/en not_active Ceased
- 1995-02-09 TW TW084101123A patent/TW276336B/zh active
- 1995-02-10 US US08/386,794 patent/US20010024409A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO1995022822A1 (en) | 1995-08-24 |
| SG49121A1 (en) | 1998-05-18 |
| CN1048106C (zh) | 2000-01-05 |
| US20010024409A1 (en) | 2001-09-27 |
| KR960702149A (ko) | 1996-03-28 |
| TW276336B (en, 2012) | 1996-05-21 |
| CN1123579A (zh) | 1996-05-29 |
| EP0702824A1 (en) | 1996-03-27 |
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