DE69224573D1 - Optisches Wiedergabegerät - Google Patents

Optisches Wiedergabegerät

Info

Publication number
DE69224573D1
DE69224573D1 DE69224573T DE69224573T DE69224573D1 DE 69224573 D1 DE69224573 D1 DE 69224573D1 DE 69224573 T DE69224573 T DE 69224573T DE 69224573 T DE69224573 T DE 69224573T DE 69224573 D1 DE69224573 D1 DE 69224573D1
Authority
DE
Germany
Prior art keywords
playback device
optical playback
optical
playback
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
DE69224573T
Other languages
English (en)
Other versions
DE69224573T2 (de
Inventor
Taizo Yokota
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 DE69224573D1 publication Critical patent/DE69224573D1/de
Application granted granted Critical
Publication of DE69224573T2 publication Critical patent/DE69224573T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00Recording 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
    • G11B11/10Recording 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
    • G11B11/105Recording 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
    • G11B11/10532Heads
    • G11B11/10541Heads for reproducing
    • G11B11/10543Heads for reproducing using optical beam of radiation
    • G11B11/10545Heads for reproducing using optical beam of radiation interacting directly with the magnetisation on the record carrier
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/123Integrated head arrangements, e.g. with source and detectors mounted on the same substrate
    • G11B7/124Integrated head arrangements, e.g. with source and detectors mounted on the same substrate the integrated head arrangements including waveguides

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
DE69224573T 1991-09-27 1992-09-22 Optisches Wiedergabegerät Expired - Fee Related DE69224573T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3248721A JPH0589546A (ja) 1991-09-27 1991-09-27 光磁気記録再生装置における光ピツクアツプ装置

Publications (2)

Publication Number Publication Date
DE69224573D1 true DE69224573D1 (de) 1998-04-09
DE69224573T2 DE69224573T2 (de) 1998-10-15

Family

ID=17182360

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69224573T Expired - Fee Related DE69224573T2 (de) 1991-09-27 1992-09-22 Optisches Wiedergabegerät

Country Status (3)

Country Link
EP (1) EP0534373B1 (de)
JP (1) JPH0589546A (de)
DE (1) DE69224573T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2088701C (en) * 1992-02-05 1998-01-27 Yoshio Yoshida Optical information reproducing apparatus
JPH07176095A (ja) * 1993-06-25 1995-07-14 Nec Corp 光磁気ヘッド装置
JP3047314B2 (ja) * 1995-01-12 2000-05-29 株式会社リコー 光ヘッド
EP0740294A1 (de) * 1995-04-26 1996-10-30 Matsushita Electric Industrial Co., Ltd. Optischer Kopf

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4497534A (en) * 1983-02-28 1985-02-05 International Business Machines Corporation Holographic optical head
CA1257392A (en) * 1985-03-20 1989-07-11 Masayuki Kato Optical pickup with hologram lenses
US4794585A (en) * 1986-05-06 1988-12-27 Lee Wai Hon Optical head having a hologram lens and polarizers for use with magneto-optic medium
DE3732562C1 (de) * 1987-09-26 1988-11-24 Daimler Benz Ag Antriebsvorrichtung fuer einen UEberrollbuegel fuer Kraftwagen
US5015835A (en) * 1988-12-23 1991-05-14 Ricoh Company, Ltd. Optical information reading and writing device with diffraction means
NL8903013A (nl) * 1989-11-02 1991-06-03 Philips Nv Rasterobjektief en raster-bundelomvormer alsmede optische aftastinrichting voorzien van minstens een van deze elementen.

Also Published As

Publication number Publication date
JPH0589546A (ja) 1993-04-09
EP0534373A2 (de) 1993-03-31
EP0534373B1 (de) 1998-03-04
DE69224573T2 (de) 1998-10-15
EP0534373A3 (en) 1993-06-09

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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