DE68916623D1 - Optische Abtastvorrichtung. - Google Patents
Optische Abtastvorrichtung.Info
- Publication number
- DE68916623D1 DE68916623D1 DE68916623T DE68916623T DE68916623D1 DE 68916623 D1 DE68916623 D1 DE 68916623D1 DE 68916623 T DE68916623 T DE 68916623T DE 68916623 T DE68916623 T DE 68916623T DE 68916623 D1 DE68916623 D1 DE 68916623D1
- Authority
- DE
- Germany
- Prior art keywords
- optical scanner
- scanner
- optical
- 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.)
- Expired - Fee Related
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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously
-
- 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
- G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63312392A JPH0677336B2 (ja) | 1988-12-09 | 1988-12-09 | 光ピックアップ装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68916623D1 true DE68916623D1 (de) | 1994-08-11 |
DE68916623T2 DE68916623T2 (de) | 1995-02-23 |
Family
ID=18028698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE68916623T Expired - Fee Related DE68916623T2 (de) | 1988-12-09 | 1989-11-29 | Optische Abtastvorrichtung. |
Country Status (4)
Country | Link |
---|---|
US (1) | US5093821A (de) |
EP (1) | EP0372365B1 (de) |
JP (1) | JPH0677336B2 (de) |
DE (1) | DE68916623T2 (de) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0491458A1 (de) * | 1990-12-14 | 1992-06-24 | General Electric Company | Mehrkanaliges optisches Plattensystem |
JP3639607B2 (ja) * | 1992-10-21 | 2005-04-20 | キヤノン株式会社 | 光磁気情報記録再生装置 |
JPH06162557A (ja) * | 1992-11-18 | 1994-06-10 | Matsushita Electric Ind Co Ltd | 光学的記録再生装置 |
JPH06309725A (ja) * | 1993-04-22 | 1994-11-04 | Canon Inc | 2ビーム光ヘッド |
US6016301A (en) * | 1996-04-01 | 2000-01-18 | Sony Corporation | Optical pickup device and optical disc reproducing apparatus |
JPH09320098A (ja) * | 1996-05-27 | 1997-12-12 | Sony Corp | 光ピックアップ装置および複合光学装置 |
US6504812B2 (en) | 1996-05-27 | 2003-01-07 | Sony Corporation | Optical pickup device with a plurality of laser couplers |
US7038994B1 (en) | 1996-05-27 | 2006-05-02 | Sony Corporation | Optical pickup device with a plurality of laser couplers |
US5696749A (en) * | 1996-06-28 | 1997-12-09 | Eastman Kodak Company | Dual-wavelength optical recording head utilizing grating beam splitter and integrated laser and detectors |
JP3112841B2 (ja) * | 1996-08-27 | 2000-11-27 | 日本電気株式会社 | 光ピックアップ装置 |
KR100230264B1 (ko) * | 1996-12-06 | 1999-11-15 | 윤종용 | 광픽업장치 |
DE19859035A1 (de) * | 1998-12-21 | 2000-06-29 | Thomson Brandt Gmbh | Gerät zum Lesen oder Schreiben optischer Aufzeichnungsträger mit unterschiedlichen Informationsträgerschichten |
US20060087929A1 (en) * | 2002-07-01 | 2006-04-27 | Mmri Photonics Ltd. | Optical disk drive using one dimensional scanning |
CN1295697C (zh) * | 2002-07-16 | 2007-01-17 | 富士通株式会社 | 多层光记录介质以及存储装置 |
JP2005276312A (ja) * | 2004-03-24 | 2005-10-06 | Pioneer Electronic Corp | 光ピックアップ、および、情報処理装置 |
JP4037843B2 (ja) | 2004-04-15 | 2008-01-23 | Tdk株式会社 | 受光素子、光ヘッド及び光記録再生装置並びに光記録再生方法 |
JP4499688B2 (ja) * | 2006-05-25 | 2010-07-07 | シャープ株式会社 | 光情報処理装置 |
EP2333772A1 (de) | 2009-12-07 | 2011-06-15 | Thomson Licensing | Verfahren und Vorrichtung zum Lesen von und/oder Schreiben auf einen optischen Aufzeichnungsdatenträger |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4090031A (en) * | 1974-10-21 | 1978-05-16 | Eli S. Jacobs | Multi-layered opitcal data records and playback apparatus |
US4520472A (en) * | 1983-02-07 | 1985-05-28 | Rca Corporation | Beam expansion and relay optics for laser diode array |
US4705941A (en) * | 1983-06-30 | 1987-11-10 | Kabushiki Kaisha Toshiba | Apparatus for detecting a focusing state of an optical system |
JPS60132616U (ja) * | 1984-02-13 | 1985-09-04 | パイオニア株式会社 | 記録装置 |
JPS618744A (ja) * | 1984-06-22 | 1986-01-16 | Fuji Photo Film Co Ltd | 光デイスク装置のフオ−カス誤差検出装置 |
JPS6310340A (ja) * | 1986-07-02 | 1988-01-16 | Nec Corp | 複数ビ−ム光ヘツド |
-
1988
- 1988-12-09 JP JP63312392A patent/JPH0677336B2/ja not_active Expired - Fee Related
-
1989
- 1989-11-27 US US07/441,535 patent/US5093821A/en not_active Expired - Lifetime
- 1989-11-29 DE DE68916623T patent/DE68916623T2/de not_active Expired - Fee Related
- 1989-11-29 EP EP89121981A patent/EP0372365B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0372365B1 (de) | 1994-07-06 |
JPH02158930A (ja) | 1990-06-19 |
DE68916623T2 (de) | 1995-02-23 |
US5093821A (en) | 1992-03-03 |
EP0372365A2 (de) | 1990-06-13 |
JPH0677336B2 (ja) | 1994-09-28 |
EP0372365A3 (de) | 1991-05-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8328 | Change in the person/name/address of the agent |
Free format text: PATENTANWAELTE MUELLER & HOFFMANN, 81667 MUENCHEN |
|
8339 | Ceased/non-payment of the annual fee |