DE69226256T2 - Verfahren zur messung der verschiebungsquantität - Google Patents

Verfahren zur messung der verschiebungsquantität

Info

Publication number
DE69226256T2
DE69226256T2 DE69226256T DE69226256T DE69226256T2 DE 69226256 T2 DE69226256 T2 DE 69226256T2 DE 69226256 T DE69226256 T DE 69226256T DE 69226256 T DE69226256 T DE 69226256T DE 69226256 T2 DE69226256 T2 DE 69226256T2
Authority
DE
Germany
Prior art keywords
grooves
center line
deviation
wobble pits
measuring
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
Application number
DE69226256T
Other languages
German (de)
English (en)
Other versions
DE69226256D1 (de
Inventor
Katsuhiko Ohtomo
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of DE69226256D1 publication Critical patent/DE69226256D1/de
Publication of DE69226256T2 publication Critical patent/DE69226256T2/de
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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • 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
    • G11B7/0938—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 servo format, e.g. guide tracks, pilot signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
DE69226256T 1991-10-31 1992-10-30 Verfahren zur messung der verschiebungsquantität Expired - Fee Related DE69226256T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3311522A JPH05128594A (ja) 1991-10-31 1991-10-31 変位量測定方法
PCT/JP1992/001412 WO1993009536A1 (fr) 1991-10-31 1992-10-30 Procede pour mesurer une quantite de deplacement

Publications (2)

Publication Number Publication Date
DE69226256D1 DE69226256D1 (de) 1998-08-20
DE69226256T2 true DE69226256T2 (de) 1998-11-19

Family

ID=18018254

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69226256T Expired - Fee Related DE69226256T2 (de) 1991-10-31 1992-10-30 Verfahren zur messung der verschiebungsquantität

Country Status (5)

Country Link
US (1) US5715223A (enExample)
EP (1) EP0565731B1 (enExample)
JP (1) JPH05128594A (enExample)
DE (1) DE69226256T2 (enExample)
WO (1) WO1993009536A1 (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5238469A (en) * 1992-04-02 1993-08-24 Saes Pure Gas, Inc. Method and apparatus for removing residual hydrogen from a purified gas
JP3413680B2 (ja) * 1994-06-02 2003-06-03 ソニー株式会社 追記型光ディスク装置及び追記型光ディスクの領域境界検索方法
US5809006A (en) * 1996-05-31 1998-09-15 Cagent Technologies, Inc. Optical disk with copy protection, and apparatus and method for recording and reproducing same
GB2341607B (en) 1998-09-15 2000-07-19 Morgan Crucible Co Bonded fibrous materials
JP4476225B2 (ja) * 2006-02-21 2010-06-09 パナソニック株式会社 光ディスク装置、トラッキング制御方法、及び集積回路
CN104030259A (zh) * 2014-06-06 2014-09-10 上海大学 一种净化高纯氩气的装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4748609A (en) * 1985-03-29 1988-05-31 Hitachi, Ltd. Method and apparatus for composite tracking servo system with track offset correction and rotary optical disc having at least one correction mark for correcting track offset
NL193159C (nl) * 1985-06-19 1998-12-04 Hitachi Ltd Voorgevormde registratiedrager voor het daarin met behulp van een lichtvlek schrijven van informatie.
JPH0721879B2 (ja) * 1987-11-07 1995-03-08 株式会社日立製作所 光ディスク用レプリカ基盤，スタンパまたは原盤
ES2080938T3 (es) * 1989-12-04 1996-02-16 Thomson Brandt Gmbh Un sistema de seguimiento en un dispositivo optico de registro/reproduccion.

Also Published As

Publication number Publication date
EP0565731A4 (enExample) 1994-03-23
JPH05128594A (ja) 1993-05-25
US5715223A (en) 1998-02-03
EP0565731B1 (en) 1998-07-15
EP0565731A1 (en) 1993-10-20
DE69226256D1 (de) 1998-08-20
WO1993009536A1 (fr) 1993-05-13

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee