Method for evaluating optical recording medium, optical recording medium, and information-recording/reproducing apparatus
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United States of America Patent
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Aug 3, 2010
Grant Date -
Oct 5, 2006
app pub date -
Mar 27, 2006
filing date -
Mar 29, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The reproduction durability of an optical recording medium is evaluated highly accurately in a short period of time by providing a method for evaluating the optical recording medium, the method including determining an operating laser power for heating a recording layer to a recording operating temperature; determining a temperature of the recording layer when a laser beam having a predetermined reproducing laser power is radiated during a data reproduction; determining a relationship between the reproducing laser power during the data reproduction and a reproduction durability times at the reproducing laser power; and determining a relationship between the temperature of the recording layer during the data reproduction and the reproduction durability times from the relationship between the reproducing laser power during the data reproduction and the reproduction durability times.
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