DE69021018T2 - Rotierbarer optischer Kopf. - Google Patents
Rotierbarer optischer Kopf.Info
- Publication number
- DE69021018T2 DE69021018T2 DE69021018T DE69021018T DE69021018T2 DE 69021018 T2 DE69021018 T2 DE 69021018T2 DE 69021018 T DE69021018 T DE 69021018T DE 69021018 T DE69021018 T DE 69021018T DE 69021018 T2 DE69021018 T2 DE 69021018T2
- Authority
- DE
- Germany
- Prior art keywords
- optical head
- rotatable optical
- rotatable
- head
- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
-
- 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
- G11B7/1359—Single prisms
-
- 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
- G11B11/10532—Heads
-
- 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
- G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier
-
- 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
- G11B7/003—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent
- G11B7/0031—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent using a rotating head, e.g. helicoidal recording
-
- 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
- G11B7/08547—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements
- G11B7/08564—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements using galvanomirrors
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1306866A JPH03168931A (ja) | 1989-11-27 | 1989-11-27 | 回転光学ヘッド |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69021018D1 DE69021018D1 (de) | 1995-08-24 |
DE69021018T2 true DE69021018T2 (de) | 1995-11-30 |
Family
ID=17962200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69021018T Expired - Fee Related DE69021018T2 (de) | 1989-11-27 | 1990-11-27 | Rotierbarer optischer Kopf. |
Country Status (5)
Country | Link |
---|---|
US (1) | US5063555A (de) |
EP (1) | EP0430799B1 (de) |
JP (1) | JPH03168931A (de) |
KR (1) | KR910010416A (de) |
DE (1) | DE69021018T2 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69123419T2 (de) * | 1990-09-28 | 1997-04-03 | Matsushita Electric Ind Co Ltd | Aufzeichnungsgerät und Wiedergabegerät mit drehbaren Magnetköpfen |
JPH04276322A (ja) * | 1991-03-01 | 1992-10-01 | Sony Corp | 回転光学ヘッド装置 |
US5236272A (en) * | 1991-05-31 | 1993-08-17 | Eastman Kodak Company | Mounting apparatus for rotatable optical disk |
KR100224804B1 (ko) * | 1992-09-15 | 1999-10-15 | 윤종용 | 비디오 멀티플렉싱 시스템 |
IL106188A (en) * | 1993-06-30 | 1996-10-31 | Scitex Corp Ltd | Internal drum indicator |
DE19932902A1 (de) | 1999-07-12 | 2001-01-25 | Beiersdorf Ag | Datenspeicher |
DE10008328A1 (de) * | 2000-02-23 | 2002-01-31 | Tesa Ag | Datenspeicher |
DE10028086C2 (de) * | 2000-06-07 | 2003-05-08 | Tesa Ag | Verfahren zum Herstellen eines Datenspeichers |
DE10028113A1 (de) * | 2000-06-07 | 2001-12-20 | Beiersdorf Ag | Datenspeicher |
DE10029702A1 (de) * | 2000-06-16 | 2002-01-03 | Beiersdorf Ag | Datenspeicher |
DE10039374A1 (de) * | 2000-08-11 | 2002-02-21 | Eml Europ Media Lab Gmbh | Holographischer Datenspeicher |
DE10039372C2 (de) | 2000-08-11 | 2003-05-15 | Tesa Scribos Gmbh | Holographischer Datenspeicher |
DE10039370A1 (de) * | 2000-08-11 | 2002-02-28 | Eml Europ Media Lab Gmbh | Holographischer Datenspeicher |
DE10060235A1 (de) * | 2000-12-05 | 2002-06-13 | Tesa Ag | Verwendung eines Packbands als holographischer Datenträger |
DE10128902A1 (de) | 2001-06-15 | 2003-10-16 | Tesa Scribos Gmbh | Holographischer Datenspeicher |
DE10128901A1 (de) * | 2001-06-15 | 2002-12-19 | Tesa Ag | Verfahren zum Eingeben von Information in einen optisch beschreibbaren und auslesbaren Datenspeicher |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3503058A (en) * | 1967-03-06 | 1970-03-24 | Bell Telephone Labor Inc | Multiple memory synchronizing arrangement |
JPS5118138B1 (de) * | 1969-07-31 | 1976-06-08 | ||
JPS5613531A (en) * | 1979-07-11 | 1981-02-09 | Matsushita Electric Ind Co Ltd | Optical recording and reproducing device |
US4669070A (en) * | 1979-09-18 | 1987-05-26 | Rca Corporation | Signal format for optical tape record/playback system |
JPS62112234A (ja) * | 1985-11-11 | 1987-05-23 | Hitachi Ltd | 回転光学系 |
KR900003521B1 (ko) * | 1986-02-28 | 1990-05-21 | 삼성전자 주식회사 | 광테이프 기록재생용 레이저 드럼 |
JPS62273634A (ja) * | 1986-05-21 | 1987-11-27 | Hitachi Ltd | 光方式情報記録再生用テ−プおよびそれを使用する方法 |
US4815067A (en) * | 1986-10-06 | 1989-03-21 | Thorn Emi Plc. | Optical rotary headwheel tape recording system |
US4970707A (en) * | 1987-09-04 | 1990-11-13 | Hitachi, Ltd. | Optical tape apparatus with a tracking control mechanism and/or a focusing control mechanism |
-
1989
- 1989-11-27 JP JP1306866A patent/JPH03168931A/ja active Pending
-
1990
- 1990-11-24 KR KR1019900019107A patent/KR910010416A/ko not_active Application Discontinuation
- 1990-11-26 US US07/618,116 patent/US5063555A/en not_active Expired - Fee Related
- 1990-11-27 DE DE69021018T patent/DE69021018T2/de not_active Expired - Fee Related
- 1990-11-27 EP EP90403364A patent/EP0430799B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0430799A3 (en) | 1992-01-15 |
EP0430799A2 (de) | 1991-06-05 |
KR910010416A (ko) | 1991-06-29 |
US5063555A (en) | 1991-11-05 |
EP0430799B1 (de) | 1995-07-19 |
JPH03168931A (ja) | 1991-07-22 |
DE69021018D1 (de) | 1995-08-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |