DE68910022D1 - Optisches Speichersystem. - Google Patents
Optisches Speichersystem.Info
- Publication number
- DE68910022D1 DE68910022D1 DE89306986T DE68910022T DE68910022D1 DE 68910022 D1 DE68910022 D1 DE 68910022D1 DE 89306986 T DE89306986 T DE 89306986T DE 68910022 T DE68910022 T DE 68910022T DE 68910022 D1 DE68910022 D1 DE 68910022D1
- Authority
- DE
- Germany
- Prior art keywords
- storage system
- optical storage
- optical
- storage
- 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
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/1055—Disposition or mounting of transducers relative to record carriers
- G11B11/10556—Disposition or mounting of transducers relative to record carriers with provision for moving or switching or masking the transducers in or out of their operative position
- G11B11/10563—Access of indexed parts
-
- 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
- G11B7/0033—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with cards or other card-like flat carriers, e.g. flat sheets of optical film
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Head (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63171308A JPH0610879B2 (ja) | 1988-07-08 | 1988-07-08 | 光メモリ装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68910022D1 true DE68910022D1 (de) | 1993-11-25 |
DE68910022T2 DE68910022T2 (de) | 1994-05-05 |
Family
ID=15920862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE89306986T Expired - Fee Related DE68910022T2 (de) | 1988-07-08 | 1989-07-10 | Optisches Speichersystem. |
Country Status (5)
Country | Link |
---|---|
US (1) | US5107472A (de) |
EP (1) | EP0350336B1 (de) |
JP (1) | JPH0610879B2 (de) |
KR (1) | KR920006306B1 (de) |
DE (1) | DE68910022T2 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL9000282A (nl) * | 1990-02-06 | 1991-09-02 | Philips Nv | Optische aftastinrichting met meerdere aftastvlekken. |
JP2923331B2 (ja) * | 1990-06-12 | 1999-07-26 | オリンパス光学工業株式会社 | 光記録媒体及びその再生装置 |
JP2938218B2 (ja) * | 1991-05-20 | 1999-08-23 | パイオニア株式会社 | 情報信号記録及び再生装置 |
JPH0528491A (ja) * | 1991-07-18 | 1993-02-05 | Olympus Optical Co Ltd | 光記録再生装置 |
JPH05298773A (ja) * | 1992-04-20 | 1993-11-12 | Canon Inc | 光学的情報記録再生装置 |
KR100188435B1 (ko) * | 1993-02-25 | 1999-06-01 | 윤종용 | 광자기 디스크장치의 트랙보상장치 |
FR2724042B1 (fr) * | 1994-08-30 | 1997-01-03 | Thomson Csf | Systeme d'ecriture/lecture optique d'un support d'enregistrement et application a un disque d'enregistrement |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3919697A (en) * | 1974-06-26 | 1975-11-11 | Battelle Development Corp | Data record tracking using track identifying information in the gaps between recorded data groups |
JPS5819744A (ja) * | 1981-07-24 | 1983-02-04 | Sony Corp | 光学式記録再生装置 |
US4720825A (en) * | 1984-02-06 | 1988-01-19 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical data reproducing devices having improved trick play capability |
US4598393A (en) * | 1984-04-06 | 1986-07-01 | Drexler Technology Corporation | Three-beam optical servo tracking system with two-track parallel readout |
US4884259A (en) * | 1984-08-28 | 1989-11-28 | Fuji Photo Film Co., Ltd. | Optical memory disk and track access therefor |
JPH0721896B2 (ja) * | 1985-02-19 | 1995-03-08 | 日本電気株式会社 | 光磁気記録方法 |
US4721850A (en) * | 1985-03-06 | 1988-01-26 | Olympus Optical Co., Ltd. | Optical pickup device having a detector for detecting the light emitting intensity variation of a semiconductor light emitting element |
JP2556465B2 (ja) * | 1985-04-05 | 1996-11-20 | キヤノン株式会社 | 記録再生装置の光ヘッドアクセス方法 |
US4888753A (en) * | 1985-06-05 | 1989-12-19 | Canon Kabushiki Kaisha | Information recording medium capable of accurately detecting the recording and reproduction starting positions and an information recording-reproducing method and apparatus therefor |
US4779253A (en) * | 1985-07-30 | 1988-10-18 | Laser Magnetic Storage International Company | Sampled servo for an optical disk drive |
JPS6289235A (ja) * | 1985-10-16 | 1987-04-23 | Teac Co | 情報記録円盤 |
JPS63269324A (ja) * | 1987-04-28 | 1988-11-07 | Mitsubishi Electric Corp | 光デイスク駆動装置 |
-
1988
- 1988-07-08 JP JP63171308A patent/JPH0610879B2/ja not_active Expired - Lifetime
-
1989
- 1989-07-05 US US07/376,412 patent/US5107472A/en not_active Expired - Fee Related
- 1989-07-08 KR KR1019890009744A patent/KR920006306B1/ko not_active IP Right Cessation
- 1989-07-10 DE DE89306986T patent/DE68910022T2/de not_active Expired - Fee Related
- 1989-07-10 EP EP89306986A patent/EP0350336B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE68910022T2 (de) | 1994-05-05 |
KR900002256A (ko) | 1990-02-28 |
EP0350336B1 (de) | 1993-10-20 |
JPH0610879B2 (ja) | 1994-02-09 |
EP0350336A2 (de) | 1990-01-10 |
JPH0221428A (ja) | 1990-01-24 |
EP0350336A3 (de) | 1991-04-24 |
KR920006306B1 (ko) | 1992-08-03 |
US5107472A (en) | 1992-04-21 |
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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 |