AU2002221098A1 - Disk reproduction device - Google Patents

Disk reproduction device

Info

Publication number
AU2002221098A1
AU2002221098A1 AU2002221098A AU2109802A AU2002221098A1 AU 2002221098 A1 AU2002221098 A1 AU 2002221098A1 AU 2002221098 A AU2002221098 A AU 2002221098A AU 2109802 A AU2109802 A AU 2109802A AU 2002221098 A1 AU2002221098 A1 AU 2002221098A1
Authority
AU
Australia
Prior art keywords
reproduction device
disk reproduction
disk
reproduction
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.)
Abandoned
Application number
AU2002221098A
Inventor
Kenji Asano
Koichi Tada
Hideaki Yano
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.)
Sanyo Electric Co Ltd
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
Priority claimed from JP2000375922A external-priority patent/JP2002183971A/en
Priority claimed from JP2000375923A external-priority patent/JP2002183986A/en
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Publication of AU2002221098A1 publication Critical patent/AU2002221098A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10222—Improvement or modification of read or write signals clock-related aspects, e.g. phase or frequency adjustment or bit synchronisation
    • 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
    • G11B11/10502—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 characterised by the transducing operation to be executed
    • G11B11/10515—Reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10481—Improvement or modification of read or write signals optimisation methods
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • 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
    • G11B7/094—Methods and circuits for servo offset compensation
    • 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
    • G11B7/0945—Methods for initialising servos, start-up sequences
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1816—Testing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
    • G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
    • G11B2020/1287—Synchronisation pattern, e.g. VCO fields
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
    • 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
    • G11B7/0941—Methods and circuits for servo gain or phase compensation during operation

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)
AU2002221098A 2000-12-11 2001-12-10 Disk reproduction device Abandoned AU2002221098A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2000375922A JP2002183971A (en) 2000-12-11 2000-12-11 Disk player
JP2000375923A JP2002183986A (en) 2000-12-11 2000-12-11 Disk player
JP2000-375923 2000-12-11
JP2000-375922 2000-12-11
PCT/JP2001/010772 WO2002049031A1 (en) 2000-12-11 2001-12-10 Disk reproduction device

Publications (1)

Publication Number Publication Date
AU2002221098A1 true AU2002221098A1 (en) 2002-06-24

Family

ID=26605595

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002221098A Abandoned AU2002221098A1 (en) 2000-12-11 2001-12-10 Disk reproduction device

Country Status (4)

Country Link
US (1) US7242651B2 (en)
CN (1) CN1270319C (en)
AU (1) AU2002221098A1 (en)
WO (1) WO2002049031A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3632641B2 (en) * 2001-09-07 2005-03-23 ティアック株式会社 Optical disk device
JP4017883B2 (en) * 2002-02-20 2007-12-05 株式会社日立グローバルストレージテクノロジーズ Defect detection method, defect detection apparatus, information recording / reproducing apparatus, and magnetic disk apparatus
JP4046571B2 (en) * 2002-08-06 2008-02-13 三洋電機株式会社 Disc player
JP3958267B2 (en) * 2003-09-08 2007-08-15 日本テキサス・インスツルメンツ株式会社 Data processing apparatus and data recording / reproducing apparatus
JP4329772B2 (en) * 2006-03-03 2009-09-09 船井電機株式会社 Optical disk device
US8289821B1 (en) * 2010-12-21 2012-10-16 Western Digital (Fremont), Llc Method and system for pulsing EAMR disk drives
US8578241B2 (en) 2011-10-10 2013-11-05 Lsi Corporation Systems and methods for parity sharing data processing
US8315128B1 (en) * 2012-01-09 2012-11-20 Lsi Corporation Heat assisted magnetic recording system

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2795479B2 (en) * 1989-09-07 1998-09-10 株式会社日立製作所 Recording data reproducing apparatus and window forming circuit
JPH03119571A (en) * 1989-10-02 1991-05-21 Sony Corp Signal recording method and signal reproducing device
JPH05250815A (en) * 1992-01-07 1993-09-28 Nec Corp Data demodulator circuit
JPH05258476A (en) * 1992-03-16 1993-10-08 Hitachi Ltd Signal processing circuit
JPH0869638A (en) 1994-08-30 1996-03-12 Canon Inc Pit shape evaluation device of recording medium and recording and reproducing device of recording medium
US5612939A (en) * 1995-01-27 1997-03-18 Victor Company Of Japan, Ltd. Optical disk recording and/or reproducing apparatus for performing optimizing operation for servo control with recording and/or reproducing operation
JPH0963078A (en) 1995-08-19 1997-03-07 Ricoh Co Ltd Optical disk device
JP3510015B2 (en) * 1995-09-11 2004-03-22 株式会社日立製作所 Optical disk recording and playback device
JP4098844B2 (en) * 1997-02-26 2008-06-11 富士通株式会社 Clock phase acquisition / tracking device
JP3628515B2 (en) * 1997-05-29 2005-03-16 富士通株式会社 Write condition setting method and disk device
JP3429165B2 (en) * 1997-08-28 2003-07-22 富士通株式会社 Optical storage
JPH11161978A (en) * 1997-10-31 1999-06-18 Sony Precision Eng Center Singapore Pte Ltd Focusing characteristic measuring device of optical pickup and/or optical disk, measuring method thereof, optical disk recording and/or reproducing device and method thereof
JPH11265513A (en) * 1998-01-13 1999-09-28 Fujitsu Ltd Optical storage device
JPH11232681A (en) * 1998-02-13 1999-08-27 Fujitsu Ltd Optical information storage device
JP3887480B2 (en) * 1998-03-20 2007-02-28 パイオニア株式会社 Pre-pit detection device
JP2000057590A (en) 1998-08-07 2000-02-25 Alpine Electronics Inc Disk player
JP2000276743A (en) 1999-03-26 2000-10-06 Matsushita Electric Ind Co Ltd Method and device for recording and reproduction for magneto-optical disk
JP3256518B2 (en) 1999-04-28 2002-02-12 シャープ株式会社 Optical disk and optical disk device
JP3548057B2 (en) * 1999-08-31 2004-07-28 三洋電機株式会社 Recording / reproducing method and recording / reproducing apparatus
US6664526B2 (en) * 2000-11-15 2003-12-16 Ricoh Company, Ltd. Optical information recording employing improved recording power control scheme
JP3917878B2 (en) * 2002-02-28 2007-05-23 富士通株式会社 Optical storage device and optimum focus offset value determination method thereof

Also Published As

Publication number Publication date
US20040027947A1 (en) 2004-02-12
WO2002049031A1 (en) 2002-06-20
CN1494716A (en) 2004-05-05
US7242651B2 (en) 2007-07-10
CN1270319C (en) 2006-08-16

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