MY125549A - Method and appratus for writing optical recording media - Google Patents

Method and appratus for writing optical recording media

Info

Publication number
MY125549A
MY125549A MYPI97005831A MYPI9705831A MY125549A MY 125549 A MY125549 A MY 125549A MY PI97005831 A MYPI97005831 A MY PI97005831A MY PI9705831 A MYPI9705831 A MY PI9705831A MY 125549 A MY125549 A MY 125549A
Authority
MY
Malaysia
Prior art keywords
optical recording
appratus
recording media
function
writing optical
Prior art date
Application number
MYPI97005831A
Inventor
Arie Jeffrey Den Boef
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Publication of MY125549A publication Critical patent/MY125549A/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
    • 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
    • G11B20/182—Testing using test patterns
    • 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
    • G11B7/0045—Recording
    • G11B7/00454—Recording involving phase-change effects

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)

Abstract

A METHOD IS DESCRIBED FOR SETTING AN OPTIMUM WRITE POWER (Po) FOR RECORDING INFORMATION ON AN OPTICAL RECORDING MEDIUM (1).FIRST A SERIES OF TEST PATTERNS IS WRITTEN ON THE MEDIUM, EACH TEST PATTERN BEING WRITTEN A DIFFERENT WRITE POWER (P).ON READING THE TEST PATTERNS, THE MODULATION (M) OF EACH READ SIGNAL (Sr) IS DETERMINED. THE MODULATIONS AS A FUNCTION OF WRITE ARE CURVE-FITTED TO AN ANALYTIC FUNCTION. THE NORMALISED DERIVATIVE OF THIS FUNCTION IS DETERMINED ANALYTICALLY IS USED TO DETERMINE THE VALUE OF THE OPTIMUM WRITE POWER FOR THE MEDIUM. (FIG. 3)
MYPI97005831A 1996-12-06 1997-12-04 Method and appratus for writing optical recording media MY125549A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96203397 1996-12-06

Publications (1)

Publication Number Publication Date
MY125549A true MY125549A (en) 2006-08-30

Family

ID=8224647

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI97005831A MY125549A (en) 1996-12-06 1997-12-04 Method and appratus for writing optical recording media

Country Status (9)

Country Link
EP (1) EP0880778A1 (en)
JP (1) JP3956153B2 (en)
KR (1) KR100516813B1 (en)
CN (1) CN1138264C (en)
ID (1) ID23689A (en)
IL (1) IL125635A (en)
MY (1) MY125549A (en)
TW (1) TW358935B (en)
ZA (1) ZA9710932B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001307326A (en) 2000-04-20 2001-11-02 Teac Corp Optical disk recorder
CA2406728C (en) * 2000-11-17 2013-04-02 Koninklijke Philips Electronics N.V. Methods, optical recording apparatus using such methods and optical recording medium for use by the methods and the apparatus
JP3801000B2 (en) * 2001-08-27 2006-07-26 ティアック株式会社 Optical disk device
US7603027B2 (en) 2003-10-03 2009-10-13 Pioneer Corporation Information recording medium, information recording device and method, information recording/reproducing device and method, and computer program

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3124720B2 (en) * 1995-04-14 2001-01-15 株式会社リコー Information recording / reproducing method, information recording / reproducing device, and information recording medium
US5268893A (en) * 1991-10-18 1993-12-07 International Business Machines Corporation Write power calibration utilizing least squares fit of read-back signals for moving media memory

Also Published As

Publication number Publication date
EP0880778A1 (en) 1998-12-02
ID23689A (en) 2000-05-11
ZA9710932B (en) 1999-06-04
CN1138264C (en) 2004-02-11
TW358935B (en) 1999-05-21
JP3956153B2 (en) 2007-08-08
KR19990082316A (en) 1999-11-25
IL125635A (en) 2001-08-26
IL125635A0 (en) 1999-04-11
JP2000504467A (en) 2000-04-11
KR100516813B1 (en) 2005-11-29
CN1214790A (en) 1999-04-21

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