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
Application number
DE89306986T
Other languages
English (en)
Other versions
DE68910022T2 (de
Inventor
Tsuneo Fujiwara
Masaru Nomura
Toshihisa Deguchi
Kunio Kojima
Takeshi Yamaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Publication of DE68910022D1 publication Critical patent/DE68910022D1/de
Application granted granted Critical
Publication of DE68910022T2 publication Critical patent/DE68910022T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
DE89306986T 1988-07-08 1989-07-10 Optisches Speichersystem. Expired - Fee Related DE68910022T2 (de)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
KR900002256A (ko) 1990-02-28
US5107472A (en) 1992-04-21
KR920006306B1 (ko) 1992-08-03
DE68910022T2 (de) 1994-05-05
JPH0610879B2 (ja) 1994-02-09
EP0350336A3 (de) 1991-04-24
JPH0221428A (ja) 1990-01-24
EP0350336A2 (de) 1990-01-10
EP0350336B1 (de) 1993-10-20

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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