DE3582984D1 - Optische speichervorrichtung. - Google Patents

Optische speichervorrichtung.

Info

Publication number
DE3582984D1
DE3582984D1 DE8585305895T DE3582984T DE3582984D1 DE 3582984 D1 DE3582984 D1 DE 3582984D1 DE 8585305895 T DE8585305895 T DE 8585305895T DE 3582984 T DE3582984 T DE 3582984T DE 3582984 D1 DE3582984 D1 DE 3582984D1
Authority
DE
Germany
Prior art keywords
storage device
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 - Lifetime
Application number
DE8585305895T
Other languages
English (en)
Inventor
Yoshikazu Fujii
Tetsuya Inui
Toshihisa C- Daiya Hei Deguchi
Kenji Ohta
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
Application granted granted Critical
Publication of DE3582984D1 publication Critical patent/DE3582984D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits
    • 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
    • G11B11/10565—Marks for track change, e.g. prepits, gray codes
    • 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
    • G11B11/10578—Servo format, e.g. prepits, guide tracks, pilot signals
    • 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
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10584—Record carriers characterised by the selection of the material or by the structure or form characterised by the form, e.g. comprising mechanical protection elements
    • 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
    • G11B7/0938—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 servo format, e.g. guide tracks, pilot signals
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
DE8585305895T 1984-08-20 1985-08-19 Optische speichervorrichtung. Expired - Lifetime DE3582984D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59174736A JPS6151631A (ja) 1984-08-20 1984-08-20 光磁気メモリ素子

Publications (1)

Publication Number Publication Date
DE3582984D1 true DE3582984D1 (de) 1991-07-04

Family

ID=15983767

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585305895T Expired - Lifetime DE3582984D1 (de) 1984-08-20 1985-08-19 Optische speichervorrichtung.

Country Status (4)

Country Link
EP (1) EP0173533B1 (de)
JP (1) JPS6151631A (de)
CA (1) CA1247237A (de)
DE (1) DE3582984D1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6185653A (ja) * 1984-10-02 1986-05-01 Sharp Corp 光磁気メモリ素子
JPS62164626U (de) * 1986-04-07 1987-10-19
JP2590832B2 (ja) * 1986-09-18 1997-03-12 ヤマハ株式会社 光ディスクのトラッキングエラー検出方法
JPS63107589A (ja) * 1986-10-23 1988-05-12 Nec Corp 光記録媒体
JPS63225945A (ja) * 1987-03-16 1988-09-20 Hitachi Ltd 光磁気デイスク
JPH01279436A (ja) * 1988-05-06 1989-11-09 Asahi Glass Co Ltd 光メモリー素子用ガラス基板、光メモリー素子および光メモリー素子用記録再生システム
DE3923328A1 (de) * 1989-07-14 1991-01-24 Thomson Brandt Gmbh Magneto-optisches aufnahme- und/oder wiedergabegeraet
DE4121505A1 (de) * 1991-06-28 1993-01-07 Sonopress Prod Plattenfoermiger speicher fuer binaere informationen
JP2693289B2 (ja) * 1991-08-09 1997-12-24 シャープ株式会社 光メモリ

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1165871A (en) * 1978-11-08 1984-04-17 Kornelis Bulthuis Optically inscribable record carrier
FR2481501B1 (fr) * 1980-04-25 1985-09-13 Philips Nv Porteur d'enregistrement comportant une structure d'information lisible par voie optique et dispositif pour la lecture d'un tel porteur d'enregistrement
JPS5733441A (en) * 1980-08-07 1982-02-23 Matsushita Electric Ind Co Ltd Optical information recorder and reproducer
NL8100098A (nl) * 1981-01-12 1982-08-02 Philips Nv Registratiedrager met optisch uitleesbare informatiestruktuur.
JPS58100248A (ja) * 1981-12-11 1983-06-14 Ricoh Co Ltd 光学的情報記録媒体
JPS58102338A (ja) * 1981-12-11 1983-06-17 Mitsubishi Electric Corp 光デイスク記録・再生装置
JPS5911551A (ja) * 1982-07-12 1984-01-21 Toshiba Corp 光学式情報記憶媒体
EP0100995A3 (en) * 1982-08-10 1985-10-16 Kabushiki Kaisha Toshiba Optical disk
JPS5965951A (ja) * 1982-10-08 1984-04-14 Toshiba Corp 情報記憶媒体用原盤
JPS5996546A (ja) * 1982-11-25 1984-06-04 Sony Corp 反射型光学記録体
DE3483854D1 (de) * 1983-07-14 1991-02-07 Matsushita Electric Ind Co Ltd Platte zum aufzeichnen und wiedergeben von optischen informationen.

Also Published As

Publication number Publication date
EP0173533A3 (en) 1987-04-15
CA1247237A (en) 1988-12-20
JPH0546622B2 (de) 1993-07-14
JPS6151631A (ja) 1986-03-14
EP0173533A2 (de) 1986-03-05
EP0173533B1 (de) 1991-05-29

Similar Documents

Publication Publication Date Title
DE3577924D1 (de) Optische verbindungsvorrichtung.
DE3581550D1 (de) Optische plattengeraete.
DE3581759D1 (de) Optische karte.
DE3585749D1 (de) Optische monomodfiber.
NL194898B (nl) Optische lezer.
DE3486405T2 (de) Optisches Speicherelement.
DE3674018D1 (de) Optische kupplungsvorrichtung.
DE69020293T2 (de) Optische speicher-/wiedergabevorrichtung.
DE3770283D1 (de) Optisches speichergeraet.
DE68908517T2 (de) Vorrichtungen für optische speicherung.
DE3587515T2 (de) Optische Schalteinrichtung.
DE3578630D1 (de) Optische anordnung.
DE3582844D1 (de) Optische vorrichtung.
DE3582678D1 (de) Optische logische einrichtung.
DE3669605D1 (de) Optisches speicherelement.
DE3587708D1 (de) Optisches Speicherelement.
DE3482011D1 (de) Optische plattenspieler.
DE3884748T2 (de) Optische Plattenspieler.
DE3677741D1 (de) Optisches speicherelement.
DE3763266D1 (de) Optische speicherplatte.
DE3582984D1 (de) Optische speichervorrichtung.
IT8122545A0 (it) Dispositivo ottico di focalizzazione.
DE3783353D1 (de) Optische speicherplatte.
DE3650354T2 (de) Optische Datenspeicherungsvorrichtung.
DE3585608D1 (de) Optische speicherungsstruktur.

Legal Events

Date Code Title Description
8364 No opposition during term of opposition