Optical disk having first and second recording areas with wobble frequencies that do not interfere with EFM signal
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United States of America Patent
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Jul 20, 1999
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N/A
app pub date -
Aug 31, 1994
filing date -
Sep 3, 1993
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Abstract
A recordable optical disc on which information is recorded by applying a light beam on the surface thereof, includes: a first recording area on which information is recorded and reproduced while the disc is rotated at a first linear velocity; and a second recording area on which information is recorded and reproduced while the disc is rotated at a second linear velocity. The first recording area and the second recording area include guide grooves having wobble frequency lower than frequency band of EFM signal.
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