NL9301055A - Het volgen van het beeldgebied van niet-ingedeelde optische gegevensdragers, met gebruik van een optische kop met twee golflengten. - Google Patents

Het volgen van het beeldgebied van niet-ingedeelde optische gegevensdragers, met gebruik van een optische kop met twee golflengten. Download PDF

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Publication number
NL9301055A
NL9301055A NL9301055A NL9301055A NL9301055A NL 9301055 A NL9301055 A NL 9301055A NL 9301055 A NL9301055 A NL 9301055A NL 9301055 A NL9301055 A NL 9301055A NL 9301055 A NL9301055 A NL 9301055A
Authority
NL
Netherlands
Prior art keywords
laser
image
media
read
tracking
Prior art date
Application number
NL9301055A
Other languages
English (en)
Dutch (nl)
Original Assignee
Minnesota Mining & Mfg
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 Minnesota Mining & Mfg filed Critical Minnesota Mining & Mfg
Publication of NL9301055A publication Critical patent/NL9301055A/nl

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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
    • G11B7/0901—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 for track following only

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
NL9301055A 1992-06-25 1993-06-17 Het volgen van het beeldgebied van niet-ingedeelde optische gegevensdragers, met gebruik van een optische kop met twee golflengten. NL9301055A (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/904,174 US5398226A (en) 1992-06-25 1992-06-25 Image tracking of optical media using two wavelength optical head
US90417492 1992-06-25

Publications (1)

Publication Number Publication Date
NL9301055A true NL9301055A (nl) 1994-01-17

Family

ID=25418712

Family Applications (1)

Application Number Title Priority Date Filing Date
NL9301055A NL9301055A (nl) 1992-06-25 1993-06-17 Het volgen van het beeldgebied van niet-ingedeelde optische gegevensdragers, met gebruik van een optische kop met twee golflengten.

Country Status (4)

Country Link
US (1) US5398226A (ja)
JP (1) JPH0636340A (ja)
FR (1) FR2696270B1 (ja)
NL (1) NL9301055A (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3537941B2 (ja) * 1996-02-07 2004-06-14 株式会社東芝 光ヘッド装置
US6118753A (en) * 1996-08-13 2000-09-12 Hewlett-Packard Company Erasable digital video disk with reference clock track
US7162035B1 (en) * 2000-05-24 2007-01-09 Tracer Detection Technology Corp. Authentication method and system
DE10140325A1 (de) * 2001-08-16 2003-02-27 Thomson Brandt Gmbh Verfahren zur Verminderung des Rauschens in einem Wobbelsignal

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57130240A (en) * 1981-02-05 1982-08-12 Olympus Optical Co Ltd Optical information recording and reproducing device and information recording medium for it
US4530080A (en) * 1981-04-07 1985-07-16 Tdk Electronics Co., Ltd. Optical recording/reproducing system
JPS5856236A (ja) * 1981-09-28 1983-04-02 Hitachi Ltd 光学的トラック位置検出装置およびそれを用いた光学的記録再生装置
JPS5919251A (ja) * 1982-07-22 1984-01-31 Matsushita Electric Ind Co Ltd 光学式記録再生装置
JPS5936338A (ja) * 1982-08-24 1984-02-28 Matsushita Electric Ind Co Ltd 光デイスク記録再生方法
US4700336A (en) * 1984-06-19 1987-10-13 Matsushita Electric Industrial Co., Ltd. Optical recording and playback apparatus using plural light spots
NL8500153A (nl) * 1985-01-22 1986-08-18 Philips Nv Registratiedragerlichaam voorzien van een reliefstruktuur van optisch detekteerbare servospoorgedeelten en sektoradressen en inrichting voor het aanbrengen van deze struktuur.
JPH0777025B2 (ja) * 1985-10-16 1995-08-16 株式会社日立製作所 光学的記録再生装置
US4730293A (en) * 1986-09-15 1988-03-08 Drexler Technology Corporation Dual beam optical data system
JPS6386124A (ja) * 1986-09-30 1988-04-16 Toshiba Corp 光記録媒体の取扱装置
US5195081A (en) * 1988-04-22 1993-03-16 Canon Kabushiki Kaisha Optical apparatus for effecting recording and/or reproducing of information on/from and optical information recording medium
US5113387A (en) * 1989-12-12 1992-05-12 Optex Corporation Three laser optical disk drive system
JPH04137226A (ja) * 1990-09-28 1992-05-12 Olympus Optical Co Ltd 情報記録／再生装置
US5278812A (en) * 1992-02-18 1994-01-11 At&T Bell Laboratories Tracking and focussing functions in optical disk apparatus

Also Published As

Publication number Publication date
US5398226A (en) 1995-03-14
JPH0636340A (ja) 1994-02-10
FR2696270A1 (fr) 1994-04-01
FR2696270B1 (fr) 1995-06-16

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