Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Michael G Ginn0
Ian J Forster0
Date of Patent
August 4, 2009
0Patent Application Number
114692720
Date Filed
August 31, 2006
0Patent Primary Examiner
Patent abstract
An optical disc has a security feature in the form of an RFID tag that communicates with a voltage controlled optical modifier layer in the optical disc. In the presence of an interrogation signal, the RFID tag allows the optical disc to be used normally by outputting a voltage to the optical modifier layer. In the absence of an interrogation signal, the optical modifier layer prevents a laser from reading from or writing on the optical disc. Other embodiments are also disclosed.
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