FR2797514B3 - Dispositif de lecture magneto-optique pour bandes magnetiques multipistes - Google Patents

Dispositif de lecture magneto-optique pour bandes magnetiques multipistes

Info

Publication number
FR2797514B3
FR2797514B3 FR0004502A FR0004502A FR2797514B3 FR 2797514 B3 FR2797514 B3 FR 2797514B3 FR 0004502 A FR0004502 A FR 0004502A FR 0004502 A FR0004502 A FR 0004502A FR 2797514 B3 FR2797514 B3 FR 2797514B3
Authority
FR
France
Prior art keywords
magneto
reading device
optical reading
magnetic strips
track magnetic
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
FR0004502A
Other languages
English (en)
Other versions
FR2797514A1 (fr
Inventor
Jean Claude Jacquet
Texier Francoise Le
Stephane Bertrand
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.)
Thales SA
Original Assignee
Thomson CSF 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
Priority claimed from FR9910367A external-priority patent/FR2797513B1/fr
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR0004502A priority Critical patent/FR2797514B3/fr
Priority to PCT/FR2000/002248 priority patent/WO2001011619A1/fr
Priority to US10/048,476 priority patent/US6958956B1/en
Priority to EP00956621A priority patent/EP1203374A1/fr
Publication of FR2797514A1 publication Critical patent/FR2797514A1/fr
Application granted granted Critical
Publication of FR2797514B3 publication Critical patent/FR2797514B3/fr
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
    • 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
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • G11B11/10547—Heads for reproducing using optical beam of radiation interacting with the magnetisation of an intermediate transfer element, e.g. magnetic film, included in the head
    • 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
    • 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
    • G11B7/003—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent
    • 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
FR0004502A 1999-08-10 2000-04-07 Dispositif de lecture magneto-optique pour bandes magnetiques multipistes Expired - Lifetime FR2797514B3 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR0004502A FR2797514B3 (fr) 1999-08-10 2000-04-07 Dispositif de lecture magneto-optique pour bandes magnetiques multipistes
PCT/FR2000/002248 WO2001011619A1 (fr) 1999-08-10 2000-08-04 Dispositif de lecture magneto-optique pour bandes magnetiques multipistes
US10/048,476 US6958956B1 (en) 1999-08-10 2000-08-04 Magneto-optical reading device for multi-track magnetic tapes
EP00956621A EP1203374A1 (fr) 1999-08-10 2000-08-04 Dispositif de lecture magneto-optique pour bandes magnetiques multipistes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9910367A FR2797513B1 (fr) 1999-08-10 1999-08-10 Dispositif de lecture magneto-optique pour bandes magnetiques multipistes
FR0004502A FR2797514B3 (fr) 1999-08-10 2000-04-07 Dispositif de lecture magneto-optique pour bandes magnetiques multipistes

Publications (2)

Publication Number Publication Date
FR2797514A1 FR2797514A1 (fr) 2001-02-16
FR2797514B3 true FR2797514B3 (fr) 2001-10-12

Family

ID=26212333

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0004502A Expired - Lifetime FR2797514B3 (fr) 1999-08-10 2000-04-07 Dispositif de lecture magneto-optique pour bandes magnetiques multipistes

Country Status (4)

Country Link
US (1) US6958956B1 (fr)
EP (1) EP1203374A1 (fr)
FR (1) FR2797514B3 (fr)
WO (1) WO2001011619A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7656610B1 (en) 2006-03-27 2010-02-02 Storage Technology Corporation Bi-directional magnetic recording head built on a common substrate
US7751148B1 (en) 2006-03-27 2010-07-06 Oracle America, Inc. Multi-level, multi-track magnetic recording head

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564674B1 (fr) 1984-05-18 1986-09-19 Thomson Csf Barrette multilineaire a transfert de charge et procede d'analyse
JPS62162261A (ja) * 1986-01-10 1987-07-18 Hitachi Ltd 光磁気記録再生装置
FR2605783B1 (fr) 1986-10-28 1992-05-15 Thomson Csf T ete magnetique d'enregistrement/lecture en couches minces et son procede de realisation
FR2622335B1 (fr) 1987-10-27 1990-01-26 Thomson Csf Tete magnetique d'enregistrement lecture et procede de realisation
JPH01263953A (ja) * 1988-04-15 1989-10-20 Sony Corp 光学式記録装置
FR2630853B1 (fr) 1988-04-27 1995-06-02 Thomson Csf Dispositif matriciel a tetes magnetiques notamment en couches minces
US5120136A (en) * 1989-09-12 1992-06-09 Lasertape Systems, Inc. Optical tape recorder having an acousto-optic device for scanning a radiant energy beam onto a media
KR920004442B1 (ko) * 1989-12-08 1992-06-05 삼성전자 주식회사 광학 정보 기록 및 재생시스템
FR2656723B1 (fr) * 1989-12-28 1995-07-21 Thomson Consumer Electronics Tete de lecture multipiste magneto-optique.
FR2657190B1 (fr) 1990-01-18 1995-07-21 Thomson Csf Dispositif de lecture de segments oblongs d'un support en defilement.
NL9001253A (nl) * 1990-06-01 1992-01-02 Philips Nv Inrichting voor het optisch bepalen van de positie en stand van een voorwerp en optisch inschrijf- en/of weergaveapparaat voorzien van een dergelijke inrichting.
FR2680268A1 (fr) * 1991-08-09 1993-02-12 Thomson Csf Tete de lecture magneto-optique.
FR2696037B1 (fr) * 1992-09-18 1994-11-04 Thomson Csf Dispositif de lecture magnétique.
FR2699723B1 (fr) * 1992-12-22 1995-01-20 Thomson Csf Support d'enregistrement d'informations, enregistreur, lecteur et procédé d'enregistrement.
US5321683A (en) * 1992-12-28 1994-06-14 Eastman Kodak Company Digital optical tape read system
FR2701332B1 (fr) * 1993-02-09 1995-03-10 Thomson Csf Tête de lecture magnéto-optique et appareil de lecture d'enregistrements magnétiques multipistes.
JPH08506919A (ja) * 1993-12-15 1996-07-23 フィリップス エレクトロニクス ネムローゼ フェン ノートシャップ 光走査装置
BE1007872A3 (nl) * 1993-12-15 1995-11-07 Philips Electronics Nv Optische aftastinrichting, alsmede een opteken- en/of uitleesinrichting voorzien van een dergelijke aftastinrichting.
WO1995016987A1 (fr) * 1993-12-15 1995-06-22 Philips Electronics N.V. Dispositif de balayage optique
FR2726960B1 (fr) 1994-11-10 1996-12-13 Thomson Csf Procede de realisation de transducteurs magnetoresistifs
FR2727589B1 (fr) * 1994-11-25 1997-01-03 Thomson Csf Dispositif et systeme de lecture
CN1067792C (zh) * 1994-12-05 2001-06-27 皇家菲利浦电子有限公司 对信息表面进行光学扫描的光学组件以及含有该光学组件的光学扫描装置
FR2728716B1 (fr) * 1994-12-23 1997-01-31 Thomson Csf Dispositif et systeme de lecture
FR2733346B1 (fr) * 1995-04-21 1997-05-23 Thomson Csf Procede de lecture d'informations
JPH10511496A (ja) * 1995-11-27 1998-11-04 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ テープ型レコードキャリアを走査する光学装置
FR2750787B1 (fr) 1996-07-05 1998-11-13 Thomson Csf Tete magnetique matricielle d'enregistrement/lecture et procede de realisation
FR2797710B1 (fr) * 1999-08-20 2001-11-09 Thomson Csf Tete de lecture anti-abrasion
US6771567B2 (en) * 2001-11-06 2004-08-03 O-Mass As Dual shield vertical magneto-optical read head
US6535351B1 (en) * 2001-11-14 2003-03-18 Imation Corp. Narrow track resolution magneto-optic read head

Also Published As

Publication number Publication date
EP1203374A1 (fr) 2002-05-08
WO2001011619A1 (fr) 2001-02-15
US6958956B1 (en) 2005-10-25
FR2797514A1 (fr) 2001-02-16

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