DE69221776T2 - Optisches Datenspeichersystem und -verfahren mit Mehrfachdatenoberfläche - Google Patents

Optisches Datenspeichersystem und -verfahren mit Mehrfachdatenoberfläche

Info

Publication number
DE69221776T2
DE69221776T2 DE69221776T DE69221776T DE69221776T2 DE 69221776 T2 DE69221776 T2 DE 69221776T2 DE 69221776 T DE69221776 T DE 69221776T DE 69221776 T DE69221776 T DE 69221776T DE 69221776 T2 DE69221776 T2 DE 69221776T2
Authority
DE
Germany
Prior art keywords
storage system
data storage
multiple data
optical data
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 - Lifetime
Application number
DE69221776T
Other languages
English (en)
Other versions
DE69221776D1 (de
Inventor
Margaret Evans Best
Hal Jervis Rosen
Kurt Allan Ruben
Timothy Carl Strand
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.)
Mitsubishi Electric Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE69221776D1 publication Critical patent/DE69221776D1/de
Publication of DE69221776T2 publication Critical patent/DE69221776T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

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    • 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
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/00745—Sectoring or header formats within a track
    • G—PHYSICS
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    • 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
    • G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops
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    • 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
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    • 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
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    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
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    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
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    • 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
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    • 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
    • G11B7/0901—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 for track following only
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    • 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
    • G11B7/0908—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 for focusing only
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    • 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
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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DE69221776T 1991-06-04 1992-06-02 Optisches Datenspeichersystem und -verfahren mit Mehrfachdatenoberfläche Expired - Lifetime DE69221776T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/710,226 US5255262A (en) 1991-06-04 1991-06-04 Multiple data surface optical data storage system with transmissive data surfaces

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DE69221776T2 true DE69221776T2 (de) 1998-02-26

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DE69221776T Expired - Lifetime DE69221776T2 (de) 1991-06-04 1992-06-02 Optisches Datenspeichersystem und -verfahren mit Mehrfachdatenoberfläche
DE69233265T Expired - Lifetime DE69233265T2 (de) 1991-06-04 1992-06-02 Optisches Datenspeichermedium mit mehreren Datenoberflächen und Datenspeichersystem
DE69233251T Expired - Lifetime DE69233251T2 (de) 1991-06-04 1992-06-02 Optisches Medium mit Mehrfachdatenoberfläche und Datenspeichersystem
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DE69233251T Expired - Lifetime DE69233251T2 (de) 1991-06-04 1992-06-02 Optisches Medium mit Mehrfachdatenoberfläche und Datenspeichersystem
DE69233783T Expired - Lifetime DE69233783D1 (de) 1991-06-04 1992-06-02 Optisches Datenspeichersystem

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US (10) US5255262A (de)
EP (6) EP1696428A3 (de)
JP (17) JP3066677B2 (de)
KR (8) KR960007253B1 (de)
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CA (5) CA2066004C (de)
DE (5) DE69230297T2 (de)
HK (2) HK1008704A1 (de)

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