[go: up one dir, main page]

BR8806542A - Processo e aparelho de gravar informacoes sobre um suporte de registro de um tipo termomagnetico - Google Patents

Processo e aparelho de gravar informacoes sobre um suporte de registro de um tipo termomagnetico

Info

Publication number
BR8806542A
BR8806542A BR888806542A BR8806542A BR8806542A BR 8806542 A BR8806542 A BR 8806542A BR 888806542 A BR888806542 A BR 888806542A BR 8806542 A BR8806542 A BR 8806542A BR 8806542 A BR8806542 A BR 8806542A
Authority
BR
Brazil
Prior art keywords
record carrier
magnetic field
radiation pulses
recording information
heated
Prior art date
Application number
BR888806542A
Other languages
English (en)
Inventor
Johannes Hendricus Mari Spruit
Hendricus Franciscus Tongeren
Piet Frans Bongers
Bernardus Antonius Joha Jacobs
Original Assignee
Philips Nv
Philips & Du Pont Optical
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, Philips & Du Pont Optical filed Critical Philips Nv
Publication of BR8806542A publication Critical patent/BR8806542A/pt

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
    • 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
    • G11B11/1053—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 to compensate for the magnetic domain drift or time shift
    • 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
    • G11B11/10504—Recording
    • G11B11/1051—Recording by modulating both the magnetic field and the light beam at the transducers
    • G11B11/10513—Recording by modulating both the magnetic field and the light beam at the transducers one of the light beam or the magnetic field being modulated by data and the other by a clock or frequency generator
    • 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
    • G11B13/045—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 combined recording by magnetic and optic means

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)
  • Electronic Switches (AREA)
  • Traffic Control Systems (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Multi-Process Working Machines And Systems (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
BR888806542A 1987-12-14 1988-12-12 Processo e aparelho de gravar informacoes sobre um suporte de registro de um tipo termomagnetico BR8806542A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8703011A NL8703011A (nl) 1987-12-14 1987-12-14 Werkwijze voor het optekenen van informatie op een registratiedrager van het thermo-magnetische type, alsmede een inrichting voor het uitvoeren van de werkwijze.

Publications (1)

Publication Number Publication Date
BR8806542A true BR8806542A (pt) 1989-08-22

Family

ID=19851084

Family Applications (1)

Application Number Title Priority Date Filing Date
BR888806542A BR8806542A (pt) 1987-12-14 1988-12-12 Processo e aparelho de gravar informacoes sobre um suporte de registro de um tipo termomagnetico

Country Status (11)

Country Link
US (1) US5126985A (pt)
EP (1) EP0321027B1 (pt)
JP (1) JP2847117B2 (pt)
KR (1) KR100210989B1 (pt)
CN (1) CN1034820A (pt)
AT (1) ATE94303T1 (pt)
BR (1) BR8806542A (pt)
DE (1) DE3883939T2 (pt)
ES (1) ES2045093T3 (pt)
HK (1) HK85396A (pt)
NL (1) NL8703011A (pt)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2669532B2 (ja) * 1988-05-20 1997-10-29 株式会社日立製作所 光ディスク装置
NL8902293A (nl) * 1989-09-14 1991-04-02 Philips Nv Werkwijze en inrichting voor het inschrijven en uitlezen van een magneto-optische registratiedrager.
NL8902728A (nl) * 1989-11-06 1991-06-03 Philips Nv Werkwijze en inrichting voor het inschrijven en uitlezen van een magneto-optische registratiedrager.
JP3134290B2 (ja) * 1989-11-21 2001-02-13 ソニー株式会社 光磁気記録装置
JPH03214441A (ja) * 1990-01-18 1991-09-19 Canon Inc 光磁気記録装置
JP2733127B2 (ja) * 1990-08-07 1998-03-30 シャープ株式会社 光磁気記録装置
US5329408A (en) * 1991-07-10 1994-07-12 Sharp Kabushiki Kaisha Magnetic field modulation magnet-optical recording apparatus in which an FM modulator and a magnetic head driving circuit are used in common
US5345435A (en) * 1991-08-30 1994-09-06 Sony Corporation Optical disc and method for recording on optical disc
US5636187A (en) * 1992-12-11 1997-06-03 Canon Kabushiki Kaisha Magnetooptical recording apparatus and magnetooptical recording method for canceling leakage magnetic fields associated with a recording medium and devices ancillary to the recording medium
JPH06208739A (ja) * 1993-01-11 1994-07-26 Canon Inc 光磁気ディスク及び該ディスクの着磁方法
JPH06325369A (ja) * 1993-03-08 1994-11-25 Philips Electron Nv 光学記録兼読取装置
US5494755A (en) * 1994-06-08 1996-02-27 Lockheed Missiles & Space Co., Inc. Passive intermodulation products (PIM) free tape
EP0740296A3 (en) * 1995-04-26 1998-02-25 Sanyo Electric Co. Ltd Magneto-optical recording media
KR19990036193A (ko) * 1995-08-09 1999-05-25 가나이 쓰도무 광디스크장치
JPH09293286A (ja) * 1996-02-22 1997-11-11 Sanyo Electric Co Ltd 光磁気記録媒体及び情報記録再生装置
TW494403B (en) * 1998-12-24 2002-07-11 Koninkl Philips Electronics Nv Device having a first operational state for writing information onto a record carrier
JP2000331394A (ja) 1999-05-14 2000-11-30 Sanyo Electric Co Ltd 光磁気記録方法および光磁気記録装置
TW509902B (en) 1999-11-24 2002-11-11 Koninkl Philips Electronics Nv Device for writing information onto an information carrier
MX2022013249A (es) * 2020-04-24 2022-12-06 Radexel Inc Dispositivo para generar campo magnetico y metodo para controlar el mismo.

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5778653A (en) * 1980-10-29 1982-05-17 Fuji Photo Film Co Ltd Laser recording method
JPS58137105A (ja) * 1982-02-08 1983-08-15 Shiro Okamura レ−ザ記録装置
JPS58146007A (ja) * 1982-02-24 1983-08-31 Shiro Okamura 光磁気記録方式
JPS6032148A (ja) * 1983-08-02 1985-02-19 Ricoh Co Ltd 光磁気記録装置
JPS60127548A (ja) * 1983-12-14 1985-07-08 Matsushita Electric Ind Co Ltd 光記録再生装置
JPH0619863B2 (ja) * 1984-06-13 1994-03-16 株式会社日立製作所 光磁気情報記憶方法及び装置
JPH0831221B2 (ja) * 1985-01-30 1996-03-27 株式会社ニコン 補正された情報記録方式
JPH0721892B2 (ja) * 1985-02-14 1995-03-08 日本電気株式会社 光磁気記録方法
JPH0721894B2 (ja) * 1985-02-19 1995-03-08 日本電気株式会社 光磁気記録方法
JPH0721897B2 (ja) * 1986-04-24 1995-03-08 インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション 光磁気データ記録装置
JP2575120B2 (ja) * 1986-07-31 1997-01-22 ソニー株式会社 光磁気記録装置

Also Published As

Publication number Publication date
CN1034820A (zh) 1989-08-16
DE3883939T2 (de) 1994-03-24
JPH01208751A (ja) 1989-08-22
NL8703011A (nl) 1989-07-03
KR100210989B1 (ko) 1999-07-15
US5126985A (en) 1992-06-30
ATE94303T1 (de) 1993-09-15
EP0321027A2 (en) 1989-06-21
ES2045093T3 (es) 1994-01-16
EP0321027A3 (en) 1989-09-06
KR890010830A (ko) 1989-08-11
EP0321027B1 (en) 1993-09-08
JP2847117B2 (ja) 1999-01-13
HK85396A (en) 1996-05-24
DE3883939D1 (de) 1993-10-14

Similar Documents

Publication Publication Date Title
BR8806542A (pt) Processo e aparelho de gravar informacoes sobre um suporte de registro de um tipo termomagnetico
ATE65860T1 (de) Magnetooptisches aufzeichnungsgeraet.
BR8902391A (pt) Processo de varredura otica de um plano de informacao meio de gravacao otico e aparelho de varredura
DE3879073D1 (de) Optische abtastvorrichtung und verfahren fuer eine optische abtastvorrichtung.
DE69414299D1 (de) Aufzeichnungsvorrichtung mit temperaturabhängiger Schreibstromsteuerung
JPS5794906A (en) Optical magnetic recorder
BR9004532A (pt) Processo de gravacao de leitura por via optica de informacoes e aparelho para sua realizacao
DE69222986D1 (de) Platte zur Aufzeichnung von Informationssignalen
DE69316304D1 (de) Aufzeichnungsvorrichtung mit temperaturabhängiger Schreibstromsteuerung
EP0492581A3 (en) Method of reproduction from magneto-optical recording medium
SG44721A1 (en) Method of and apparatus for writing and reading a mageto-optical record carrier
ATE110486T1 (de) Magneto-optische aufzeichnungsvorrichtung.
ATE114858T1 (de) Magnetooptisches aufzeichnungsverfahren und magnetooptische aufzeichnungsanordnung.
AU3604789A (en) Magneto-optical recorder with magnetic-field modulation
MY106490A (en) Magneto-optical recording apparatus
US4914643A (en) Overwriting photomagnetic recording apparatus having single light source and fixed-field generator
DE69131855D1 (de) Aufzeichnungs-/Wiedergabesystem für eine magneto-optische Platte
DE69016928D1 (de) Verfahren und Anordnung zum Beschreiben und Lesen eines magnetooptischen Aufzeichnungsträgers.
EP0352099A3 (en) An external magnetic field device for a magnetooptical information recording and reproducing apparatus
JPS5715204A (en) Photomagnetic recording and reproducing device
CA2048499A1 (en) Magneto-optical recording device
JPS6489002A (en) Magnetic field impressing device for magneto-optical disk
JPS6417082A (en) Thermomagnetic recorder
JPS6470946A (en) Optical head
JPS56151974A (en) Formation of magnetic latent image