Multi-layered optical disk and method of detecting a track
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United States of America Patent
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Jan 10, 2006
Issued Date -
N/A
app pub date -
Mar 4, 2004
filing date -
Oct 30, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multi-layered optical disk comprising a plurality of recording layers accumulated in the thickness direction wherein a light beam is focused on one of tracks of one of the layers thereby to record and reproduce data, the optical disk being characterized in that recording layers each have an identification section storing an address of the recording layer which the identification section belongs to.
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