TW200723271A - Optical disc device control method and optical disc device - Google Patents

Optical disc device control method and optical disc device

Info

Publication number
TW200723271A
TW200723271A TW095121979A TW95121979A TW200723271A TW 200723271 A TW200723271 A TW 200723271A TW 095121979 A TW095121979 A TW 095121979A TW 95121979 A TW95121979 A TW 95121979A TW 200723271 A TW200723271 A TW 200723271A
Authority
TW
Taiwan
Prior art keywords
optical disc
power
disc device
variation
laser power
Prior art date
Application number
TW095121979A
Other languages
Chinese (zh)
Inventor
Naoki Yumiyama
Original Assignee
Matsushita Electric Ind 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
Application filed by Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of TW200723271A publication Critical patent/TW200723271A/en

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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • G11B7/1263—Power control during transducing, e.g. by monitoring

Abstract

The invention at one hand receives the returned reflected light from the optical disc that is radiated on the optical disc by means of laser to proceed the generation of control signal and reading signal. At the other hand, it varies the laser power radiated on the optical disc to make the variation of power from the power before transformation to the power of transformation object vary gradually over time and varies the gain and offset of various signal generation circuit with the transformation of laser power correspondingly to reduce the servo detachment caused by the variation of laser power or failure numbers of data readout to obtain the variation action of laser power under stable state.
TW095121979A 2005-06-21 2006-06-20 Optical disc device control method and optical disc device TW200723271A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005180022A JP2007004836A (en) 2005-06-21 2005-06-21 Optical disk device control method and optical disk device

Publications (1)

Publication Number Publication Date
TW200723271A true TW200723271A (en) 2007-06-16

Family

ID=37570311

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095121979A TW200723271A (en) 2005-06-21 2006-06-20 Optical disc device control method and optical disc device

Country Status (3)

Country Link
JP (1) JP2007004836A (en)
TW (1) TW200723271A (en)
WO (1) WO2006137281A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8036095B2 (en) * 2008-02-27 2011-10-11 Panasonic Corporation Signal processing device for optical disks and optical disk apparatus
US8179754B2 (en) 2008-05-26 2012-05-15 Sony Computer Entertainment Inc. Optical disc apparatus, method, and information storage medium for reading information recorded on an optical disc medium
JP4603597B2 (en) * 2008-05-26 2010-12-22 株式会社ソニー・コンピュータエンタテインメント Optical disc apparatus, control method therefor, program, and information storage medium
JP2014086107A (en) * 2012-10-23 2014-05-12 Funai Electric Co Ltd Optical disk drive and reproduction method of optical disk

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001202645A (en) * 2000-01-21 2001-07-27 Matsushita Electric Ind Co Ltd Laser control circuit for optical disk device
JP3846299B2 (en) * 2001-12-14 2006-11-15 松下電器産業株式会社 Optical disc recording / reproducing apparatus and reproducing method
JP4168023B2 (en) * 2004-10-25 2008-10-22 株式会社日立製作所 Optical disc apparatus and servo system adjustment method

Also Published As

Publication number Publication date
JP2007004836A (en) 2007-01-11
WO2006137281A1 (en) 2006-12-28

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