WO2002029804A1 - Dispositif a disque - Google Patents

Dispositif a disque Download PDF

Info

Publication number
WO2002029804A1
WO2002029804A1 PCT/JP2001/008735 JP0108735W WO0229804A1 WO 2002029804 A1 WO2002029804 A1 WO 2002029804A1 JP 0108735 W JP0108735 W JP 0108735W WO 0229804 A1 WO0229804 A1 WO 0229804A1
Authority
WO
WIPO (PCT)
Prior art keywords
zone
rotates
optical pickup
spindle motor
magneto
Prior art date
Application number
PCT/JP2001/008735
Other languages
English (en)
Japanese (ja)
Inventor
Koichi Tada
Tadashi Okajima
Original Assignee
Sanyo Electric Co., 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
Application filed by Sanyo Electric Co., Ltd. filed Critical Sanyo Electric Co., Ltd.
Publication of WO2002029804A1 publication Critical patent/WO2002029804A1/fr

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/26—Speed-changing arrangements; Reversing arrangements; Drive-transfer means 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
    • G11B11/1055—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
    • G11B11/10595—Control of operating function
    • 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

  • Rotational Drive Of Disk (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

L'invention concerne un dispositif à disque (10) comportant un axe (50) entraînant un disque magnéto-optique (48) de type à vélocité linéaire constante de zone (ZCLV). Lorsqu'un système de détection optique (12) est déplacé vers une autre zone du disque (48) en cours d'enregistrement ou de reproduction, un processeur de signaux numériques (40) met le moteur (52) en rotation selon une vitesse de rotation optimale qui correspond à la zone dans laquelle le système de détection optique (12) est déplacé en synchronisation avec une impulsion FG émanant d'une unité d'attaque (54) du moteur. Lorsque le système de détection optique (12) atteint une piste visée dans la zone, le processeur de signaux numériques (40) met le moteur (52) en rotation sur la base du signal de marque d'horloge fine FCM émanant d'un circuit de détection de signal FCM (28). Le moteur (52) tourne à la vitesse de rotation optimale qui correspond à la zone.
PCT/JP2001/008735 2000-10-04 2001-10-03 Dispositif a disque WO2002029804A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000304424A JP2002117615A (ja) 2000-10-04 2000-10-04 ディスク装置
JP2000-304424 2000-10-04

Publications (1)

Publication Number Publication Date
WO2002029804A1 true WO2002029804A1 (fr) 2002-04-11

Family

ID=18785473

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/008735 WO2002029804A1 (fr) 2000-10-04 2001-10-03 Dispositif a disque

Country Status (2)

Country Link
JP (1) JP2002117615A (fr)
WO (1) WO2002029804A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4109919B2 (ja) 2002-07-19 2008-07-02 キヤノン株式会社 光学的情報再生装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5169614A (ja) * 1974-12-13 1976-06-16 Fujitsu Ltd Kiokuseigyohoshiki
JPS5397325A (en) * 1977-02-07 1978-08-25 Victor Co Of Japan Ltd Information recording medium reproducer
JPS5475224A (en) * 1977-11-28 1979-06-15 Sanyo Electric Co Ltd Reader
JPS5528579A (en) * 1978-08-22 1980-02-29 Sony Corp Signal recording/reproducing method
JPS5769423A (en) * 1980-10-17 1982-04-28 Matsushita Electric Ind Co Ltd Rotation controller
JPS5787371U (fr) * 1980-11-17 1982-05-29
JPS5975453A (ja) * 1982-10-22 1984-04-28 Akai Electric Co Ltd ドロツプアウト補償サ−ボ装置
JPH01128276A (ja) * 1987-11-13 1989-05-19 Hitachi Ltd 情報記録再生装置
JPH01204272A (ja) * 1988-02-10 1989-08-16 Seiko Epson Corp 小型光ディスクの記録方式
JPH0322225A (ja) * 1989-03-29 1991-01-30 Ricoh Co Ltd 光ディスク駆動装置

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5169614A (ja) * 1974-12-13 1976-06-16 Fujitsu Ltd Kiokuseigyohoshiki
JPS5397325A (en) * 1977-02-07 1978-08-25 Victor Co Of Japan Ltd Information recording medium reproducer
JPS5475224A (en) * 1977-11-28 1979-06-15 Sanyo Electric Co Ltd Reader
JPS5528579A (en) * 1978-08-22 1980-02-29 Sony Corp Signal recording/reproducing method
JPS5769423A (en) * 1980-10-17 1982-04-28 Matsushita Electric Ind Co Ltd Rotation controller
JPS5787371U (fr) * 1980-11-17 1982-05-29
JPS5975453A (ja) * 1982-10-22 1984-04-28 Akai Electric Co Ltd ドロツプアウト補償サ−ボ装置
JPH01128276A (ja) * 1987-11-13 1989-05-19 Hitachi Ltd 情報記録再生装置
JPH01204272A (ja) * 1988-02-10 1989-08-16 Seiko Epson Corp 小型光ディスクの記録方式
JPH0322225A (ja) * 1989-03-29 1991-01-30 Ricoh Co Ltd 光ディスク駆動装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOUICHI IWAMURA: "Video-disc to DAD nyuumon", 1 November 1982, CORONA PUBLISHING CO. LTD., XP002949950 *

Also Published As

Publication number Publication date
JP2002117615A (ja) 2002-04-19

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