DE69032529T2 - Spurzugriffsteuersystem mit Korrektur der Exzentrizität für Geräte mit rotierenden Platten - Google Patents
Spurzugriffsteuersystem mit Korrektur der Exzentrizität für Geräte mit rotierenden PlattenInfo
- Publication number
- DE69032529T2 DE69032529T2 DE69032529T DE69032529T DE69032529T2 DE 69032529 T2 DE69032529 T2 DE 69032529T2 DE 69032529 T DE69032529 T DE 69032529T DE 69032529 T DE69032529 T DE 69032529T DE 69032529 T2 DE69032529 T2 DE 69032529T2
- Authority
- DE
- Germany
- Prior art keywords
- eccentricity
- correction
- devices
- control system
- access control
- 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 - Fee Related
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
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9002589A JP2738002B2 (ja) | 1989-04-10 | 1989-04-10 | 光記憶装置 |
JP9002289A JP2684759B2 (ja) | 1989-04-10 | 1989-04-10 | 回転型記憶装置及び光記憶装置 |
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 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69032529D1 DE69032529D1 (de) | 1998-09-03 |
DE69032529T2 true DE69032529T2 (de) | 1998-12-10 |
Family
ID=27306329
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69032529T Expired - Fee Related DE69032529T2 (de) | 1989-04-10 | 1990-04-09 | Spurzugriffsteuersystem mit Korrektur der Exzentrizität für Geräte mit rotierenden Platten |
DE69025224T Expired - Fee Related DE69025224T2 (de) | 1989-04-10 | 1990-04-09 | Steuersystem für Spursuche in Geräten mit rotierenden Platten mit Korrektur der Exzentrizität |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69025224T Expired - Fee Related DE69025224T2 (de) | 1989-04-10 | 1990-04-09 | Steuersystem für Spursuche in Geräten mit rotierenden Platten mit Korrektur der Exzentrizität |
Country Status (5)
Country | Link |
---|---|
US (1) | US5163033A (de) |
EP (2) | EP0647938B1 (de) |
KR (1) | KR930009685B1 (de) |
CA (1) | CA2014172C (de) |
DE (2) | DE69032529T2 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69032529T2 (de) * | 1989-04-10 | 1998-12-10 | Fujitsu Ltd | Spurzugriffsteuersystem mit Korrektur der Exzentrizität für Geräte mit rotierenden Platten |
US5444684A (en) * | 1990-10-03 | 1995-08-22 | Fujitsu Limited | Seek control system of dual processor magneto-optic disk unit |
EP0503095B1 (de) * | 1990-10-03 | 1996-06-12 | Fujitsu Limited | Suchsteuersystem für magneto-optisches scheibenantriebsgerät |
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)
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 |
DE3787388T2 (de) * | 1986-03-19 | 1994-01-13 | Sanyo Electric Co | Optisches Aufzeichnungsgerät. |
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 |
DE69032529T2 (de) * | 1989-04-10 | 1998-12-10 | Fujitsu Ltd | Spurzugriffsteuersystem mit Korrektur der Exzentrizität für Geräte mit rotierenden Platten |
-
1990
- 1990-04-09 DE DE69032529T patent/DE69032529T2/de not_active Expired - Fee Related
- 1990-04-09 CA CA002014172A patent/CA2014172C/en not_active Expired - Fee Related
- 1990-04-09 DE DE69025224T patent/DE69025224T2/de not_active Expired - Fee Related
- 1990-04-09 EP EP94203532A patent/EP0647938B1/de not_active Expired - Lifetime
- 1990-04-09 EP EP90303788A patent/EP0392777B1/de not_active Expired - Lifetime
- 1990-04-10 KR KR1019900004934A patent/KR930009685B1/ko not_active IP Right Cessation
- 1990-04-10 US US07/507,672 patent/US5163033A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0647938B1 (de) | 1998-07-29 |
EP0392777B1 (de) | 1996-02-07 |
CA2014172C (en) | 1994-11-01 |
CA2014172A1 (en) | 1990-10-10 |
KR900016966A (ko) | 1990-11-15 |
DE69032529D1 (de) | 1998-09-03 |
EP0392777A2 (de) | 1990-10-17 |
EP0647938A3 (de) | 1995-06-28 |
US5163033A (en) | 1992-11-10 |
EP0392777A3 (de) | 1991-01-09 |
KR930009685B1 (ko) | 1993-10-08 |
EP0647938A2 (de) | 1995-04-12 |
DE69025224T2 (de) | 1996-06-13 |
DE69025224D1 (de) | 1996-03-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: PANASONIC CORP., KADOMA, OSAKA, JP |
|
8339 | Ceased/non-payment of the annual fee |