DE3769117D1 - Magnetischer schreib- und optischer lesekopf eines datentraegers. - Google Patents

Magnetischer schreib- und optischer lesekopf eines datentraegers.

Info

Publication number
DE3769117D1
DE3769117D1 DE8787402843T DE3769117T DE3769117D1 DE 3769117 D1 DE3769117 D1 DE 3769117D1 DE 8787402843 T DE8787402843 T DE 8787402843T DE 3769117 T DE3769117 T DE 3769117T DE 3769117 D1 DE3769117 D1 DE 3769117D1
Authority
DE
Germany
Prior art keywords
data carrier
reading head
optical reading
magnetic writing
writing
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
DE8787402843T
Other languages
English (en)
Inventor
Christian Maury
Dan Pham
Jean-Marie Richard
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.)
Bull SA
Original Assignee
Bull SA
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 Bull SA filed Critical Bull SA
Application granted granted Critical
Publication of DE3769117D1 publication Critical patent/DE3769117D1/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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/60—Fluid-dynamic spacing of heads from record-carriers
    • G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion
    • 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
    • G11B13/00—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for
    • G11B13/04—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for magnetically or by magnetisation and optically or by radiation, for changing or sensing optical properties
DE8787402843T 1986-12-30 1987-12-14 Magnetischer schreib- und optischer lesekopf eines datentraegers. Expired - Fee Related DE3769117D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8618321A FR2609201B1 (fr) 1986-12-30 1986-12-30 Tete d'ecriture magnetique et de lecture optique d'un support d'informations

Publications (1)

Publication Number Publication Date
DE3769117D1 true DE3769117D1 (de) 1991-05-08

Family

ID=9342405

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787402843T Expired - Fee Related DE3769117D1 (de) 1986-12-30 1987-12-14 Magnetischer schreib- und optischer lesekopf eines datentraegers.

Country Status (5)

Country Link
US (1) US4893207A (de)
EP (1) EP0275747B1 (de)
JP (1) JPS63214942A (de)
DE (1) DE3769117D1 (de)
FR (1) FR2609201B1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2621412B1 (fr) * 1987-10-05 1990-09-14 Bull Sa Dispositif de lecture optique et d'ecriture magnetique d'un support d'informations
JPH03250402A (ja) * 1990-02-28 1991-11-08 Canon Inc 磁気記録装置及びシステム
US5311378A (en) * 1992-05-05 1994-05-10 Insite Peripherals, Inc. Dual very-high density magnetic head assembly with optical servo positioning for very high density floppy disk recording and high density format compatability
JP3395235B2 (ja) * 1993-02-09 2003-04-07 ソニー株式会社 情報記録ディスク
US6058094A (en) * 1996-07-30 2000-05-02 Seagate Technology Inc. Flying magneto-optical head with a steerable mirror
US6178150B1 (en) 1996-07-30 2001-01-23 Seagate Technology Inc. Offset optics for use with optical heads
US6226233B1 (en) 1996-07-30 2001-05-01 Seagate Technology, Inc. Magneto-optical system utilizing MSR media
US6034938A (en) * 1996-07-30 2000-03-07 Seagate Technology, Inc. Data storage system having an optical processing flying head
US6775100B1 (en) * 1997-05-05 2004-08-10 Seagate Technology Llc Laser assisted track width definition and radial control with magnetic recording
US5889641A (en) * 1997-05-05 1999-03-30 Seagate Technology, Inc. Magneto-resistive magneto-optical head
US6115329A (en) * 1998-04-06 2000-09-05 Seagate Technology Inc. Air bearing surface design for constant fly height profile
US6574190B1 (en) 1999-03-17 2003-06-03 Jpmorgan Chase Bank Coil-on-block design with reduced particle accumulation on MO disc drives
US6262970B1 (en) 1999-03-17 2001-07-17 Seagate Technology Llc Air bearing surface design for glide testing of plastic media
US6578164B1 (en) * 2000-07-12 2003-06-10 Iomega Corporation Method for detecting transient write errors in a disk drive having a dual transducer slider
AU2002253486A1 (en) * 2001-01-08 2002-08-28 Zen Research (Ireland), Ltd. Method and apparatus for writing multiple tracks of an optical disk

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4219853A (en) * 1978-12-21 1980-08-26 International Business Machines Corporation Read/write thin film head
FR2514913B1 (fr) * 1981-10-16 1986-07-04 Bull Sa Dispositif opto-electronique de lecture d'informations contenues sur un support magnetique
FR2523346B1 (fr) * 1982-03-15 1988-06-10 Cii Honeywell Bull Dispositif de chargement de corps principal de plate-forme comportant au moins un transducteur de lecture/ecriture d'un support d'informations
US4618901A (en) * 1982-07-19 1986-10-21 Nippon Telegraph & Telephone Public Corporation High density magnetic head
FR2539883B1 (fr) * 1983-01-25 1987-11-06 Bull Sa Dispositif optique de focalisation pour la lecture d'un support d'informations defilant devant lui
JPS6139251A (ja) * 1984-07-27 1986-02-25 Sony Corp 磁気記録光再生装置

Also Published As

Publication number Publication date
FR2609201B1 (fr) 1989-10-27
EP0275747A1 (de) 1988-07-27
US4893207A (en) 1990-01-09
FR2609201A1 (fr) 1988-07-01
JPS63214942A (ja) 1988-09-07
EP0275747B1 (de) 1991-04-03

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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