ES2121995T3 - Procedimiento y dispositivo de registro-lectura de informacion sobre un soporte optico o magneto-optico movil. - Google Patents

Procedimiento y dispositivo de registro-lectura de informacion sobre un soporte optico o magneto-optico movil.

Info

Publication number
ES2121995T3
ES2121995T3 ES93905444T ES93905444T ES2121995T3 ES 2121995 T3 ES2121995 T3 ES 2121995T3 ES 93905444 T ES93905444 T ES 93905444T ES 93905444 T ES93905444 T ES 93905444T ES 2121995 T3 ES2121995 T3 ES 2121995T3
Authority
ES
Spain
Prior art keywords
optical
information
magneto
registration
procedure
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
ES93905444T
Other languages
English (en)
Inventor
Carvennec Francois Le
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
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Application granted granted Critical
Publication of ES2121995T3 publication Critical patent/ES2121995T3/es
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
    • 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
    • G11B7/24085—Pits
    • 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
    • G11B11/10528—Shaping of magnetic domains, e.g. form, dimensions
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

LA INFORMACION ES GRABADA EN FORMA DE ALTERACIONES DE LONGITUDES VARIABLES (10, 10+NA1), POR EJEMPLO EN FORMA DE ABLACIONES LOCALIZADAS DE UNA CAPA TERMOSENSIBLE DEL SOPORTE. ESTE TIPO DE CODIFICACION DE LA INFORMACION ES SENSIBLE A LAS IMPRECISIONES DEL FACTOR DE FORMA DEBIDAS A LA NO LINEALIDAD INHERENTE AL METODO DE GRABACION UTILIZADO. EL PROCESO SEGUN LA INVENCION CONSISTE EN GRABAR, DE SITIO A SITIO, UNAS MARCAS (M1, M2) QUE SIRVEN DE REFERENCIA DE LONGITUDES. ESTAS MARCAS (M1, M2) SON GRABADAS AL MISMO TIEMPO Y EN LAS MISMAS CONDICIONES QUE LA INFORMACION PROPIAMENTE DICHA (D1, D2, D3). DURANTE EL PROCESO DE LECTURA, SIRVEN DE REFERENCIAS DE LONGITUDES PARA LA ZONA DE INFORMACION ASOCIADA, Y DESPUES CONVERSION EN SEÑALES ELECTRICAS DE REFERENCIA DE TIEMPO.
ES93905444T 1992-03-03 1993-03-02 Procedimiento y dispositivo de registro-lectura de informacion sobre un soporte optico o magneto-optico movil. Expired - Lifetime ES2121995T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9202498A FR2688332B1 (fr) 1992-03-03 1992-03-03 Procede et dispositif d'enregistrement lecture d'information sur un support optique ou magneto-optique mobile.

Publications (1)

Publication Number Publication Date
ES2121995T3 true ES2121995T3 (es) 1998-12-16

Family

ID=9427269

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93905444T Expired - Lifetime ES2121995T3 (es) 1992-03-03 1993-03-02 Procedimiento y dispositivo de registro-lectura de informacion sobre un soporte optico o magneto-optico movil.

Country Status (9)

Country Link
US (1) US5475672A (es)
EP (1) EP0609398B1 (es)
JP (1) JP3284549B2 (es)
DE (1) DE69320937T2 (es)
ES (1) ES2121995T3 (es)
FR (1) FR2688332B1 (es)
HK (1) HK1010766A1 (es)
SG (1) SG49939A1 (es)
WO (1) WO1993018514A1 (es)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6487151B1 (en) 1994-12-20 2002-11-26 Matsushita Electric Industrial Co. Ltd. Optical information recording and reproducing system with overwrite capability and recording medium for use therewith
FR2731808B1 (fr) * 1995-03-14 1997-04-11 Thomson Csf Systeme de reglage de focalisation optique
US6088323A (en) * 1996-07-16 2000-07-11 Sony Corporation Optical disk, optical disk device, and optical disk recording method
JP3861269B2 (ja) 1996-07-16 2006-12-20 ソニー株式会社 光ディスク装置、光ディスクの記録方法、光ディスク及び光ディスクの製造方法
WO1999044196A1 (en) * 1998-02-27 1999-09-02 Doug Carson & Associates, Inc. Individual adjustment of pit and land transition locations in an optical disc mastering process
US6208594B1 (en) 1998-06-02 2001-03-27 Seagate Technology Llc Efficient linearization of saturation channels
WO1999063530A1 (en) * 1998-06-02 1999-12-09 Seagate Technology, Inc. A magneto-optical recording system employing linear recording and playback channels
US6687205B1 (en) 1998-06-09 2004-02-03 Seagate Technology Llc Parallel coded spread spectrum communication for data storage
FR2787232B1 (fr) 1998-12-15 2001-02-23 Thomson Csf Disque d'enregistrement optique anti-piratage et procede de lecture d'un tel disque
US6542443B1 (en) * 1999-06-02 2003-04-01 Seagate Technology Llc Efficient linearization of saturation channels
FR2805071B1 (fr) 2000-02-11 2002-05-03 Moulage Plastique De L Ouest Disque optique protege contre la copie et procede de protection pour un tel disque
US6792051B1 (en) * 2000-07-25 2004-09-14 Thomson Licensing S.A. In-band-on-channel broadcast system for digital data

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4873680A (en) * 1987-03-13 1989-10-10 Laserdrive Ltd. Apparatus and method for detecting and compensating for pit extension in an optical disk recording system
NL8702904A (nl) * 1987-12-03 1989-07-03 Philips Nv Werkwijze en inrichting voor het optekenen van informatie op een registratiedrager, alsmede een inrichting voor het lezen van de opgetekende informatie.
JP2785370B2 (ja) * 1989-08-25 1998-08-13 ソニー株式会社 光記録装置
JPH03171453A (ja) * 1989-11-29 1991-07-24 Sony Corp 光磁気信号再生方法
FR2664420A1 (fr) * 1990-07-05 1992-01-10 Thomson Csf Enregistreur-lecteur optique ou magneto-optique.
JPH04212723A (ja) * 1990-07-31 1992-08-04 Toshiba Corp 情報記録再生装置

Also Published As

Publication number Publication date
JPH06507513A (ja) 1994-08-25
FR2688332B1 (fr) 1995-12-01
DE69320937T2 (de) 1999-05-12
SG49939A1 (en) 1998-06-15
FR2688332A1 (fr) 1993-09-10
HK1010766A1 (en) 1999-06-25
EP0609398A1 (fr) 1994-08-10
JP3284549B2 (ja) 2002-05-20
DE69320937D1 (de) 1998-10-15
US5475672A (en) 1995-12-12
WO1993018514A1 (fr) 1993-09-16
EP0609398B1 (fr) 1998-09-09

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