WO2002029804A1 - Dispositif a disque - Google Patents
Dispositif a disque Download PDFInfo
- 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
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.
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)
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)
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 |
-
2000
- 2000-10-04 JP JP2000304424A patent/JP2002117615A/ja active Pending
-
2001
- 2001-10-03 WO PCT/JP2001/008735 patent/WO2002029804A1/fr active Application Filing
Patent Citations (10)
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)
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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