Information recording medium having a plurality of recording layers
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United States of America Patent
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May 11, 2010
Grant Date -
Apr 5, 2007
app pub date -
Mar 15, 2004
filing date -
Jul 7, 2003
priority date (Note) -
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Abstract
An information recording medium is provided with a plurality of information recordable recording layers, and a spiral or concentric tracks are formed on each of the plurality of recording layers. At least a portion of each track has wobbles corresponding to a wobble signal that includes layer information for discriminating the recording layer formed with the track.
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