RECORDING DEVICE AND METHOD OF ADJUSTING LASER POWER

PROBLEM TO BE SOLVED: To perform OPC to a sensitive disk adapted to high speed recording. SOLUTION: An evaluation value of a recorded area after a predetermined period of time elapsed since data have been recorded is obtained as an evaluation value about a reproduction signal during the reproduction...

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Bibliographic Details
Main Author SAGARA SEIICHI
Format Patent
LanguageEnglish
Published 17.02.2011
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To perform OPC to a sensitive disk adapted to high speed recording. SOLUTION: An evaluation value of a recorded area after a predetermined period of time elapsed since data have been recorded is obtained as an evaluation value about a reproduction signal during the reproduction of the recorded data, and recording laser power is adjusted on the basis of the evaluation value after the predetermined period of time elapsed since data have been recorded. For example, the evaluation value measured at a varying elapsed time is corrected in accordance with the length of the elapsed time. Alternatively, an evaluation value after an evaluation value variation is stabilized is measured by reproducing the data after standing by for the time elapsed after recording. COPYRIGHT: (C)2011,JPO&INPIT
Bibliography:Application Number: JP20090177296