Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 24, 2010
Patent Application Number
11909887
Date Filed
September 29, 2006
Patent Primary Examiner
Patent abstract
An optical pickup is opposed to an inner-radius portion of an optical disc that is set, and pits (a modulation signal) are read by applying laser light for a DVD to the inner-radius portion. The read-out modulation signal is decoded by inputting it to a CD decoder. If decoded disc information includes particular verification data, the optical disc is judged to be a legitimate optical disc of a particular type and formation of a visible image on the label surface is permitted.
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