CS725684A2 - Zpusob zaznamenavani informace v magnetooptickem nosici zaznamu, pristroj a magnetoopticky nosic zaznamu k provadeni tohoto zpusobu - Google Patents

Zpusob zaznamenavani informace v magnetooptickem nosici zaznamu, pristroj a magnetoopticky nosic zaznamu k provadeni tohoto zpusobu Download PDF

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Publication number
CS725684A2
CS725684A2 CS847256A CS725684A CS725684A2 CS 725684 A2 CS725684 A2 CS 725684A2 CS 847256 A CS847256 A CS 847256A CS 725684 A CS725684 A CS 725684A CS 725684 A2 CS725684 A2 CS 725684A2
Authority
CS
Czechoslovakia
Prior art keywords
light beam
record carrier
information
magnetic field
positions
Prior art date
Application number
CS847256A
Other languages
Czech (cs)
English (en)
Inventor
Josephus J M Braat
Marino G Carasso
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of CS725684A2 publication Critical patent/CS725684A2/cs

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Classifications

    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • 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
    • G11B11/10502—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 characterised by the transducing operation to be executed
    • G11B11/10517—Overwriting or erasing
    • 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
    • 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
    • G11B11/10595—Control of operating function
    • 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
    • G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24073—Tracks
CS847256A 1983-09-26 1984-09-26 Zpusob zaznamenavani informace v magnetooptickem nosici zaznamu, pristroj a magnetoopticky nosic zaznamu k provadeni tohoto zpusobu CS725684A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8303281A NL8303281A (nl) 1983-09-26 1983-09-26 Werkwijze voor het schrijven van informatie in een magneto-optische registratiedrager, inrichting voor het uitvoeren van de werkwijze en een magneto-optische registratiedrager te gebruiken in een inrichting voor het uitvoeren van de werkwijze.

Publications (1)

Publication Number Publication Date
CS725684A2 true CS725684A2 (en) 1985-08-15

Family

ID=19842447

Family Applications (1)

Application Number Title Priority Date Filing Date
CS847256A CS725684A2 (en) 1983-09-26 1984-09-26 Zpusob zaznamenavani informace v magnetooptickem nosici zaznamu, pristroj a magnetoopticky nosic zaznamu k provadeni tohoto zpusobu

Country Status (15)

Country Link
US (1) US4630249A (ja)
JP (1) JPS6093654A (ja)
KR (1) KR850002536A (ja)
AU (1) AU568147B2 (ja)
BE (1) BE900665A (ja)
BR (1) BR8404777A (ja)
CA (1) CA1224268A (ja)
CH (1) CH666362A5 (ja)
CS (1) CS725684A2 (ja)
DE (1) DE3433377A1 (ja)
ES (1) ES8505487A1 (ja)
FR (1) FR2552576B1 (ja)
GB (1) GB2147136B (ja)
NL (1) NL8303281A (ja)
SE (1) SE8404765L (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61276103A (ja) * 1985-05-31 1986-12-06 Canon Inc 光磁気メモリ記録方法
EP0238055B1 (en) * 1986-03-19 1993-09-15 Sanyo Electric Co., Ltd. Optical recording apparatus
JPS6337839A (ja) * 1986-07-31 1988-02-18 Brother Ind Ltd 光デイスク
US4965780A (en) * 1987-08-12 1990-10-23 Digital Equipment Corporation Magneto-optical data recording device using a wavelength and polarization-sensitive splitter
US4970711A (en) * 1988-02-05 1990-11-13 Tandy Corporation Bulk eraser for optical memory media
US4962492A (en) * 1988-04-29 1990-10-09 Laser Magnetic Storage International Company Magneto-optic data recording system, actuating device therefor and method of providing same
US7835232B2 (en) * 2006-06-27 2010-11-16 International Business Machines Corporation Method to erase data stored on blu-ray disc

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54146613A (en) * 1978-05-10 1979-11-16 Hitachi Ltd Optical head
JPS6049977B2 (ja) * 1980-04-23 1985-11-06 松下電器産業株式会社 光デイスク装置
JPS57117106A (en) * 1981-01-09 1982-07-21 Olympus Optical Co Ltd Optical magnetic recording and reproducing method
JPS57133503A (en) * 1981-02-10 1982-08-18 Sharp Corp Optical and magnetic recorder and reproducer
JPS57162137A (en) * 1981-03-28 1982-10-05 Kokusai Denshin Denwa Co Ltd <Kdd> Photomagnetic recording and reproducing system
JPS57172536A (en) * 1981-04-15 1982-10-23 Fujitsu Ltd Information recording and reproducing device
JPS57200960A (en) * 1981-06-04 1982-12-09 Pioneer Electronic Corp Recording and reproducing method and its device
NL8203725A (nl) * 1982-09-27 1984-04-16 Philips Nv Thermo-magneto-optische geheugeninrichting en registratiemedium daarvoor.

Also Published As

Publication number Publication date
JPS6093654A (ja) 1985-05-25
ES536123A0 (es) 1985-05-16
BE900665A (fr) 1985-03-25
GB2147136B (en) 1987-05-28
DE3433377A1 (de) 1985-04-11
CA1224268A (en) 1987-07-14
AU568147B2 (en) 1987-12-17
AU3343684A (en) 1985-04-04
CH666362A5 (de) 1988-07-15
BR8404777A (pt) 1985-08-13
ES8505487A1 (es) 1985-05-16
FR2552576A1 (fr) 1985-03-29
GB2147136A (en) 1985-05-01
SE8404765L (sv) 1985-03-27
US4630249A (en) 1986-12-16
KR850002536A (ko) 1985-05-13
GB8423984D0 (en) 1984-10-31
NL8303281A (nl) 1985-04-16
SE8404765D0 (sv) 1984-09-24
FR2552576B1 (fr) 1990-10-05

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