Method and apparatus for compensating optical disks for effects of thin films
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United States of America Patent
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Dec 2, 2003
Grant Date -
N/A
app pub date -
Sep 20, 2000
filing date -
Sep 20, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optical data storage/recording medium is provided with a thin film adjacent a data surface. Potential undesired effects of the presence or thickness of the thin film are adjusted for or compensated for to reduce or eliminate the undesired effects. In one aspect, the (uncoated) physical size of data layer features are adjusted so as to produce desired as-detected sizes, shapes or spacings, after a coating or thin film is present. In one aspect, length and/or width of raised features have an uncoated physical size less than the desired as-detected size. In one aspect, depressed features have uncoated physical dimensions greater than desired as-detected dimensions.
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