JPS5873031A - 光デイスク情報読出装置 - Google Patents

光デイスク情報読出装置

Info

Publication number
JPS5873031A
JPS5873031A JP57161535A JP16153582A JPS5873031A JP S5873031 A JPS5873031 A JP S5873031A JP 57161535 A JP57161535 A JP 57161535A JP 16153582 A JP16153582 A JP 16153582A JP S5873031 A JPS5873031 A JP S5873031A
Authority
JP
Japan
Prior art keywords
magnetic
information
plane
disk
tracks
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.)
Granted
Application number
JP57161535A
Other languages
English (en)
Japanese (ja)
Other versions
JPH038024B2 (cg-RX-API-DMAC7.html
Inventor
ジヤン−ピエ−ル・ラザ−リ
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.)
ANTERUNASHIYONARU PUURU RANFUORUMATEIKU SEE I I HANIIUERUBURU CO
Original Assignee
ANTERUNASHIYONARU PUURU RANFUORUMATEIKU SEE I I HANIIUERUBURU CO
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 ANTERUNASHIYONARU PUURU RANFUORUMATEIKU SEE I I HANIIUERUBURU CO filed Critical ANTERUNASHIYONARU PUURU RANFUORUMATEIKU SEE I I HANIIUERUBURU CO
Publication of JPS5873031A publication Critical patent/JPS5873031A/ja
Publication of JPH038024B2 publication Critical patent/JPH038024B2/ja
Granted 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
JP57161535A 1981-10-16 1982-09-16 光デイスク情報読出装置 Granted JPS5873031A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8119543 1981-10-16
FR8119543A FR2514913B1 (fr) 1981-10-16 1981-10-16 Dispositif opto-electronique de lecture d'informations contenues sur un support magnetique

Publications (2)

Publication Number Publication Date
JPS5873031A true JPS5873031A (ja) 1983-05-02
JPH038024B2 JPH038024B2 (cg-RX-API-DMAC7.html) 1991-02-05

Family

ID=9263134

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57161535A Granted JPS5873031A (ja) 1981-10-16 1982-09-16 光デイスク情報読出装置

Country Status (5)

Country Link
US (1) US4510544A (cg-RX-API-DMAC7.html)
EP (1) EP0077693B1 (cg-RX-API-DMAC7.html)
JP (1) JPS5873031A (cg-RX-API-DMAC7.html)
DE (1) DE3276398D1 (cg-RX-API-DMAC7.html)
FR (1) FR2514913B1 (cg-RX-API-DMAC7.html)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526987B1 (fr) * 1982-05-14 1987-07-03 Bull Sa Procede opto-electronique de lecture d'informations contenues sur un support magnetique et circuit pour le mettre en oeuvre
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
US4638383A (en) * 1984-02-22 1987-01-20 Mcginlay James G Micro hard-disk drive system
JPS61160845A (ja) * 1985-01-09 1986-07-21 Nippon Kogaku Kk <Nikon> 光デイスクの記録再生装置
FR2601465B1 (fr) * 1986-07-11 1988-10-21 Bull Sa Dispositif modulateur haute frequence de polarisation de la lumiere
FR2609201B1 (fr) * 1986-12-30 1989-10-27 Bull Sa Tete d'ecriture magnetique et de lecture optique d'un support d'informations
FR2615995A1 (fr) * 1987-05-27 1988-12-02 Bull Sa Mode d'ecriture d'informations sur un support d'enregistrement magnetique
FR2621411B1 (fr) 1987-10-05 1989-12-08 Bull Sa Dispositif asservi de lecture optique et d'ecriture magnetique d'un support d'informations
JP3350072B2 (ja) * 1991-11-12 2002-11-25 パイオニア株式会社 ピックアップ装置
US6850475B1 (en) 1996-07-30 2005-02-01 Seagate Technology, Llc Single frequency laser source for optical data storage system
US5850375A (en) * 1996-07-30 1998-12-15 Seagate Technology, Inc. System and method using optical fibers in a data storage and retrieval system
US6034938A (en) * 1996-07-30 2000-03-07 Seagate Technology, Inc. Data storage system having an optical processing flying head
US5940549A (en) * 1996-07-30 1999-08-17 Seagate Technology, Incorporated Optical system and method using optical fibers for storage and retrieval of information
US6574015B1 (en) 1998-05-19 2003-06-03 Seagate Technology Llc Optical depolarizer
US6275349B1 (en) 1998-12-02 2001-08-14 Storage Technology Corporation Integrated optical tracking system for magnetic media

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3716847A (en) * 1970-06-10 1973-02-13 Cii Mirror utilized in magneto-optical readout system to eliminate fresnel effect

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3158846A (en) * 1961-01-23 1964-11-24 Silverman Daniel Information retrieval systems
FR2057678A5 (cg-RX-API-DMAC7.html) * 1969-08-18 1971-05-21 Ibm
US3769465A (en) * 1969-08-18 1973-10-30 Ibm Electronic servo in magnetic recording readout
US3662364A (en) * 1969-12-22 1972-05-09 Ibm Scan control for synchronizing a data signal with a clock signal
DE2033557B2 (de) * 1970-07-07 1978-03-16 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt System zur Speicherung und Wieder gäbe von Daten
GB1316917A (en) * 1970-12-21 1973-05-16 Ibm Magneto-optic transducers
DE2108837C3 (de) * 1971-02-25 1973-11-15 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Anordnung zur Abtastung von Signalen längs mindestens einer Spur
US3737236A (en) * 1972-01-03 1973-06-05 Corning Glass Works Magnetooptic readout system utilizing optical waveguide fibers
US3739154A (en) * 1972-05-01 1973-06-12 Ampex Optical tracking apparatus for read out of high density recording
CA947867A (en) * 1972-05-16 1974-05-21 H. Keith Eastwood Computer memory device
FR2260833A1 (en) * 1974-02-13 1975-09-05 Proc Opto Electro Exploit Optical reader for linear recording - projects image onto scanning photodiode array to form segments
BE831264A (fr) * 1975-07-11 1975-11-03 Systeme de lecture d'informations sur disque
NL7920100A (nl) * 1978-11-01 1981-02-27 Hitachi Ltd Inrichting voor het detecteren van magneto-optische anisotropie.
JPS55142424A (en) * 1979-04-18 1980-11-07 Ibm Sensor for optical data memory

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3716847A (en) * 1970-06-10 1973-02-13 Cii Mirror utilized in magneto-optical readout system to eliminate fresnel effect

Also Published As

Publication number Publication date
DE3276398D1 (en) 1987-06-25
JPH038024B2 (cg-RX-API-DMAC7.html) 1991-02-05
EP0077693A1 (fr) 1983-04-27
FR2514913B1 (fr) 1986-07-04
US4510544A (en) 1985-04-09
EP0077693B1 (fr) 1987-05-20
FR2514913A1 (fr) 1983-04-22

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