ES2133531T3 - Procedimiento de lectura de un soporte de registro y sistema que aplica este procedimiento. - Google Patents

Procedimiento de lectura de un soporte de registro y sistema que aplica este procedimiento.

Info

Publication number
ES2133531T3
ES2133531T3 ES94902844T ES94902844T ES2133531T3 ES 2133531 T3 ES2133531 T3 ES 2133531T3 ES 94902844 T ES94902844 T ES 94902844T ES 94902844 T ES94902844 T ES 94902844T ES 2133531 T3 ES2133531 T3 ES 2133531T3
Authority
ES
Spain
Prior art keywords
diaphony
coefficients
procedure
coefficient
reading
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
ES94902844T
Other languages
English (en)
Inventor
Francois Maurice
Michel Sonrier
Charaf Hanna
Joseph Colineau
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
Vantiva SA
Original Assignee
Thomson Multimedia SA
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 Multimedia SA, Thomson CSF SA filed Critical Thomson Multimedia SA
Application granted granted Critical
Publication of ES2133531T3 publication Critical patent/ES2133531T3/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
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/12—Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads; Masking of beams, e.g. of light beams
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
    • G11B21/103—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following on tapes
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/49—Fixed mounting or arrangements, e.g. one head per track
    • G11B5/4969—Details for track selection or addressing
    • 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

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

ESTE PROCESO Y SISTEMA DE LECTURA DE SOPORTE DE GRABACION COMPRENDE PRINCIPALMENTE: UN CIRCUITO DE CORRECCION DE DIAFONIA (5); CIRCUITOS DE ESTIMACION DE COEFICIENTES DE DIAFONIA (2, 4G) 4D). EL CIRCUITO DE ESTIMACION (29 CLACULA A PARTIR DE SEÑALES (X-J, XJ, XJ+1), QUE SE SUPONEN YA CORREGIDOS, COEFICIENTES DE DIAFONIA RESIDUAL (EJ, ED). TAL COEFICIENTE ES IGUAL AL PRODUCTO DEL VALOR DE UNA SEÑAL XJ DE UNA PISTA POR EL SIGNO DE UNA SEÑAL DE UNA PISTA VECINA. ASI SE TIENEN DOS COEFICIENTES IZQUIERDO Y DERECHO (GJG, CGD). A CONTINUACION ESTOS COEFICIENTE (EJ, ED) SON FILTRADOS POR FILTROS (4G, 4D) QUE TIENEN EN MEMORIA LOS COEFICIENTES DE DIAFONIA (DJ, CD) CALCULADOS DURANTE UNA OPERACION ANTERIOR QUE ACTUALIZAN LOS COEFICIENTES DE DIAFONIA (DJ, CD) POR UNA FRACCION K'' DE LOS COEFICIENTES DE DIAFONIA RESIDUAL. APLICACION: LECTURA DE SOPORTES DE GRABACION DE ALTA DENSIDAD (MAGNETICA U OPTICA).
ES94902844T 1992-12-22 1993-12-21 Procedimiento de lectura de un soporte de registro y sistema que aplica este procedimiento. Expired - Lifetime ES2133531T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9215474A FR2699724B1 (fr) 1992-12-22 1992-12-22 Procédé de lecture d'un support d'enregistrement et système appliquant ce procédé.

Publications (1)

Publication Number Publication Date
ES2133531T3 true ES2133531T3 (es) 1999-09-16

Family

ID=9436911

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94902844T Expired - Lifetime ES2133531T3 (es) 1992-12-22 1993-12-21 Procedimiento de lectura de un soporte de registro y sistema que aplica este procedimiento.

Country Status (10)

Country Link
US (1) US5493553A (es)
EP (1) EP0627114B1 (es)
JP (1) JP3573456B2 (es)
KR (1) KR100276938B1 (es)
CN (1) CN1059972C (es)
DE (1) DE69325263T2 (es)
ES (1) ES2133531T3 (es)
FR (1) FR2699724B1 (es)
TW (1) TW237540B (es)
WO (1) WO1994015335A1 (es)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5883750A (en) * 1992-12-22 1999-03-16 Thomson-Csf Method and system for the magnetic recording of information elements and information medium by providing current correction for cross-talk magnetic flux
FR2699723B1 (fr) * 1992-12-22 1995-01-20 Thomson Csf Support d'enregistrement d'informations, enregistreur, lecteur et procédé d'enregistrement.
FR2727589B1 (fr) * 1994-11-25 1997-01-03 Thomson Csf Dispositif et systeme de lecture
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
US5701283A (en) * 1995-11-15 1997-12-23 Zen Research N.V. Method and apparatus for high speed optical storage device
US6430125B1 (en) 1996-07-03 2002-08-06 Zen Research (Ireland), Ltd. Methods and apparatus for detecting and correcting magnification error in a multi-beam optical disk drive
US5729512A (en) * 1996-07-03 1998-03-17 Zen Research N.V. Magnification and tracking error correction system for multiple track optical disk reader
US5959953A (en) * 1996-07-03 1999-09-28 Zen Research Nv Methods and apparatus for performing cross-talk correction in a multi-track optical disk reader based on magnification error
FR2779863B1 (fr) * 1998-06-16 2000-08-25 Thomson Csf Systeme de suivi de piste pour l'enregistrement/lecture d'un support d'informations et support d'enregistrement
US6275349B1 (en) 1998-12-02 2001-08-14 Storage Technology Corporation Integrated optical tracking system for magnetic media
DE69906822T2 (de) 1999-07-09 2004-01-29 Thales Paris Spurfolgesystem zur aufzeichnung/wiedergabe eines informationsträgers und aufzeichnungsträger
FR2802696B1 (fr) 1999-12-17 2002-07-19 Thomson Csf Lecteur magneto optique optimise par le polariseur de lumiere incidente
US7203379B1 (en) * 2000-09-29 2007-04-10 Ess Technology, Inc. Digital image cross talk correction
US6940805B2 (en) * 2001-10-23 2005-09-06 Dragsholm Wireless Holdings Llc Methods and apparatus for cross-talk and jitter reduction in multi-beam optical disks
US7405907B2 (en) * 2004-08-03 2008-07-29 O-Mass As Adjacent magnetoresistive read head and method for obtaining position error signal
FR2889618A1 (fr) * 2005-08-02 2007-02-09 Hi Stor Technologies Sa Dispositif de lecture de bandes magnetiques et procede de lecture d'une bande magnetique
US7307809B2 (en) * 2005-08-18 2007-12-11 Quantum Corporation Correlation servo for positioning recording head

Family Cites Families (9)

* 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
GB1478339A (en) * 1975-12-19 1977-06-29 British Broadcasting Corp Multiple track record replay
JPS5933618A (ja) * 1982-08-16 1984-02-23 Hitachi Ltd トラツク位置ずれ検知方式
JPS61287056A (ja) * 1985-06-12 1986-12-17 Toshiba Corp 光情報記録再生装置
JP2645025B2 (ja) * 1987-09-04 1997-08-25 株式会社日立製作所 光記録再生方法
EP0393719B1 (en) * 1989-04-21 1995-07-05 Nec Corporation Signal reproducing apparatus for optical recording and reproducing equipment and method for the same
JP2548426B2 (ja) * 1989-06-02 1996-10-30 松下電器産業株式会社 信号記録／再生装置
FR2665010B1 (fr) * 1990-07-20 1992-09-18 Thomson Csf Dispositif magnetique de lecture a reseau matriciel de tetes de lecture.
FR2689293B1 (fr) * 1992-03-27 1994-05-13 Thomson Csf Dispositif de lecture d'un ensemble d'elements resistifs.

Also Published As

Publication number Publication date
CN1090413A (zh) 1994-08-03
KR950700589A (ko) 1995-01-16
WO1994015335A1 (fr) 1994-07-07
US5493553A (en) 1996-02-20
JP3573456B2 (ja) 2004-10-06
EP0627114B1 (fr) 1999-06-09
FR2699724A1 (fr) 1994-06-24
DE69325263T2 (de) 1999-11-04
DE69325263D1 (de) 1999-07-15
EP0627114A1 (fr) 1994-12-07
JPH07504293A (ja) 1995-05-11
TW237540B (es) 1995-01-01
KR100276938B1 (ko) 2001-01-15
FR2699724B1 (fr) 1995-01-20
CN1059972C (zh) 2000-12-27

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