CA2014172A1 - Systeme de commande d'acces aux pistes d'enregistrement d'un disque tournant, avec correction d'excentricite - Google Patents

Systeme de commande d'acces aux pistes d'enregistrement d'un disque tournant, avec correction d'excentricite

Info

Publication number
CA2014172A1
CA2014172A1 CA2014172A CA2014172A CA2014172A1 CA 2014172 A1 CA2014172 A1 CA 2014172A1 CA 2014172 A CA2014172 A CA 2014172A CA 2014172 A CA2014172 A CA 2014172A CA 2014172 A1 CA2014172 A1 CA 2014172A1
Authority
CA
Canada
Prior art keywords
head
track
impinging
during
data writing
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
CA2014172A
Other languages
English (en)
Other versions
CA2014172C (fr
Inventor
Shigenori Yanagi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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
Priority claimed from JP1090023A external-priority patent/JPH02267742A/ja
Priority claimed from JP9002289A external-priority patent/JP2684759B2/ja
Priority claimed from JP9002589A external-priority patent/JP2738002B2/ja
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of CA2014172A1 publication Critical patent/CA2014172A1/fr
Application granted granted Critical
Publication of CA2014172C publication Critical patent/CA2014172C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/095—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0953—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for eccentricity of the disc or disc tracks
    • 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
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10552—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base
    • G11B11/10554—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base the transducers being disposed on the same side of the carrier
    • 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
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10556—Disposition or mounting of transducers relative to record carriers with provision for moving or switching or masking the transducers in or out of their operative position
    • 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
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10556—Disposition or mounting of transducers relative to record carriers with provision for moving or switching or masking the transducers in or out of their operative position
    • G11B11/10563—Access of indexed parts
    • 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
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier
    • 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
    • G11B21/08—Track changing or selecting during transducing operation
    • G11B21/081—Access to indexed tracks or parts of continuous track
    • G11B21/083—Access to indexed tracks or parts of continuous track on discs
    • G11B21/085—Access to indexed tracks or parts of continuous track on discs with track following of accessed part
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Recording Or Reproduction (AREA)
CA002014172A 1989-04-10 1990-04-09 Systeme de commande d'acces aux pistes d'enregistrement d'un disque tournant, avec correction d'excentricite Expired - Fee Related CA2014172C (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP1090023A JPH02267742A (ja) 1989-04-10 1989-04-10 回転型記憶装置のヘッド移動制御方法及び装置
JP01-090022 1989-04-10
JP9002289A JP2684759B2 (ja) 1989-04-10 1989-04-10 回転型記憶装置及び光記憶装置
JP01-090025 1989-04-10
JP9002589A JP2738002B2 (ja) 1989-04-10 1989-04-10 光記憶装置
JP01-090023 1989-04-10

Publications (2)

Publication Number Publication Date
CA2014172A1 true CA2014172A1 (fr) 1990-10-10
CA2014172C CA2014172C (fr) 1994-11-01

Family

ID=27306329

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002014172A Expired - Fee Related CA2014172C (fr) 1989-04-10 1990-04-09 Systeme de commande d'acces aux pistes d'enregistrement d'un disque tournant, avec correction d'excentricite

Country Status (5)

Country Link
US (1) US5163033A (fr)
EP (2) EP0392777B1 (fr)
KR (1) KR930009685B1 (fr)
CA (1) CA2014172C (fr)
DE (2) DE69025224T2 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2014172C (fr) * 1989-04-10 1994-11-01 Shigenori Yanagi Systeme de commande d'acces aux pistes d'enregistrement d'un disque tournant, avec correction d'excentricite
US5444684A (en) * 1990-10-03 1995-08-22 Fujitsu Limited Seek control system of dual processor magneto-optic disk unit
WO1992006472A1 (fr) * 1990-10-03 1992-04-16 Fujitsu Limited Systeme de commande de recherche pour lecteur de disque magneto-optique
US5875161A (en) * 1992-04-16 1999-02-23 Funai Electric Co., Ltd. Method and apparatus for accessing track on an optical disc
JPH06243485A (ja) * 1993-02-19 1994-09-02 Ricoh Co Ltd 情報記録装置
JP2897617B2 (ja) * 1993-11-12 1999-05-31 松下電器産業株式会社 光ディスク記録再生装置のシステム制御装置
US5592346A (en) * 1994-03-31 1997-01-07 Polaroid Corporation Control system utilizing an adaptive predictor to compensate for harmonic distortion
JPH10124884A (ja) * 1996-10-14 1998-05-15 Fujitsu Ltd 光学的記憶装置
JPH10283653A (ja) * 1997-04-04 1998-10-23 Victor Co Of Japan Ltd 光情報記録再生装置及び光記録媒体
JP3552158B2 (ja) * 1999-04-08 2004-08-11 富士通株式会社 記憶装置
US6549492B1 (en) * 1999-06-30 2003-04-15 Oak Technology, Inc. Method and apparatus for run-out correction in a disk drive
US8922144B2 (en) * 2012-06-25 2014-12-30 Chrysler Group Llc Method of processing sensor signals for determining motion of a motor shaft

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0675297B2 (ja) * 1981-08-28 1994-09-21 株式会社日立製作所 光学的情報記録再生装置
US4752922A (en) * 1984-07-06 1988-06-21 Storage Technology Partners 11 Optical disk recording and readout system having read, write and coarse light beams
JPS61175938A (ja) * 1985-01-29 1986-08-07 Sony Corp 光デイスク記録再生装置
US4907214A (en) * 1985-12-18 1990-03-06 Kabushiki Kaisha Toshiba Eccentricity correction apparatus for an optical disk device
EP0238055B1 (fr) * 1986-03-19 1993-09-15 Sanyo Electric Co., Ltd. Appareil d'enregistrement optique
DE3804701A1 (de) * 1987-03-20 1988-09-29 Hitachi Ltd Mehrfachlichtfleck-lageregeleinrichtung
DE3887601T2 (de) * 1987-08-31 1994-06-09 Canon Kk Informationsaufnahme- und/oder -wiedergabegerät mit Mitteln zur Feststellung aller Spurfolgefehler.
JP2680589B2 (ja) * 1988-01-19 1997-11-19 富士通株式会社 光ディスク装置のトラックアクセス制御方式
JP2711103B2 (ja) * 1988-01-22 1998-02-10 富士通株式会社 光ディスク装置及び偏心情報書込制御方法
JPH01205733A (ja) * 1988-02-10 1989-08-18 Fujitsu Ltd 光記憶媒体のトラックジャンプ制御方法及びその装置
JP2695818B2 (ja) * 1988-03-02 1998-01-14 株式会社日立製作所 光ディスク自動焦点サーボ系起動方法ならびにこれを用いた光ディスク装置
CA2014172C (fr) * 1989-04-10 1994-11-01 Shigenori Yanagi Systeme de commande d'acces aux pistes d'enregistrement d'un disque tournant, avec correction d'excentricite

Also Published As

Publication number Publication date
DE69025224T2 (de) 1996-06-13
KR930009685B1 (ko) 1993-10-08
EP0392777B1 (fr) 1996-02-07
EP0647938B1 (fr) 1998-07-29
DE69032529T2 (de) 1998-12-10
DE69032529D1 (de) 1998-09-03
EP0647938A2 (fr) 1995-04-12
EP0392777A3 (fr) 1991-01-09
KR900016966A (ko) 1990-11-15
CA2014172C (fr) 1994-11-01
US5163033A (en) 1992-11-10
EP0647938A3 (fr) 1995-06-28
DE69025224D1 (de) 1996-03-21
EP0392777A2 (fr) 1990-10-17

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Effective date: 19990409