WO1998050912A3 - Method and apparatus for writing optical recording media - Google Patents

Method and apparatus for writing optical recording media Download PDF

Info

Publication number
WO1998050912A3
WO1998050912A3 PCT/IB1998/000645 IB9800645W WO9850912A3 WO 1998050912 A3 WO1998050912 A3 WO 1998050912A3 IB 9800645 W IB9800645 W IB 9800645W WO 9850912 A3 WO9850912 A3 WO 9850912A3
Authority
WO
WIPO (PCT)
Prior art keywords
test patterns
optical recording
recording media
writing optical
write power
Prior art date
Application number
PCT/IB1998/000645
Other languages
French (fr)
Other versions
WO1998050912A2 (en
Inventor
Petrus Christianus Joha Hoeven
Original Assignee
Koninkl Philips Electronics Nv
Philips Svenska Ab
Petrus Christianus Joha Hoeven
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, Philips Svenska Ab, Petrus Christianus Joha Hoeven filed Critical Koninkl Philips Electronics Nv
Priority to EP98915028A priority Critical patent/EP0916132A2/en
Priority to JP10529441A priority patent/JP2000516377A/en
Priority to BR9804877A priority patent/BR9804877A/en
Publication of WO1998050912A2 publication Critical patent/WO1998050912A2/en
Publication of WO1998050912A3 publication Critical patent/WO1998050912A3/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
    • 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

Abstract

A method is described for setting an optimum write power for recording information on an optical recording medium. A series of test patterns (20', 21', 22') is written on the medium, the test patterns being written with different write powers. The values of the write power in subsequent test patterns form a symmetrical pattern. On reading the test patterns, the modulation of each read signal is determined. An optimum value of the write power is determined from the modulations.
PCT/IB1998/000645 1997-05-01 1998-04-27 Method and apparatus for writing optical recording media WO1998050912A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP98915028A EP0916132A2 (en) 1997-05-01 1998-04-27 Method and apparatus for writing optical recording media
JP10529441A JP2000516377A (en) 1997-05-01 1998-04-27 Method and apparatus for writing to an optical recording medium
BR9804877A BR9804877A (en) 1997-05-01 1998-04-27 Process for adjusting a radiation beam writing parameter to an optimal value on an optical recording device and device for writing information on an optical recording medium

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP97107241 1997-05-01
EP97107241.8 1997-05-01
EP97202257 1997-07-18
EP97202257.8 1997-07-18

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US20289198A A-371-Of-International 1997-05-01 1998-12-22
US09/924,992 Continuation US20020031068A1 (en) 1997-05-01 2001-08-08 Method and apparatus for writing optical recording media

Publications (2)

Publication Number Publication Date
WO1998050912A2 WO1998050912A2 (en) 1998-11-12
WO1998050912A3 true WO1998050912A3 (en) 1999-02-11

Family

ID=26145421

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1998/000645 WO1998050912A2 (en) 1997-05-01 1998-04-27 Method and apparatus for writing optical recording media

Country Status (6)

Country Link
EP (1) EP0916132A2 (en)
JP (1) JP2000516377A (en)
KR (1) KR20000022408A (en)
CN (1) CN1234899A (en)
BR (1) BR9804877A (en)
WO (1) WO1998050912A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001209940A (en) 1999-11-16 2001-08-03 Victor Co Of Japan Ltd Optical disk recording/reproducing device, optical disk recording/reproducing method and optical disk
KR100667837B1 (en) * 2005-11-21 2007-01-12 삼성전자주식회사 Method for determining optimum writing power of optical disc and optical disc driving apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0335486A2 (en) * 1988-03-28 1989-10-04 Matsushita Electric Industrial Co., Ltd. Optical information recording method
US5070495A (en) * 1989-04-12 1991-12-03 International Business Machines Corporation Write calibration for magnetooptic disk recorders
US5623472A (en) * 1989-05-29 1997-04-22 U.S. Philips Corp. Method and apparatus for recording signals on a record carrier, measurement method and measurement device for use in the recording method and the recording apparatus, and record carrier

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0335486A2 (en) * 1988-03-28 1989-10-04 Matsushita Electric Industrial Co., Ltd. Optical information recording method
US5070495A (en) * 1989-04-12 1991-12-03 International Business Machines Corporation Write calibration for magnetooptic disk recorders
US5623472A (en) * 1989-05-29 1997-04-22 U.S. Philips Corp. Method and apparatus for recording signals on a record carrier, measurement method and measurement device for use in the recording method and the recording apparatus, and record carrier

Also Published As

Publication number Publication date
KR20000022408A (en) 2000-04-25
WO1998050912A2 (en) 1998-11-12
BR9804877A (en) 1999-08-24
EP0916132A2 (en) 1999-05-19
JP2000516377A (en) 2000-12-05
CN1234899A (en) 1999-11-10

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