The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 25, 2007
Filed:
Sep. 12, 2002
Applicants:
Ian J. Forster, Chelmsford, GB;
Michael G. Ginn, Chelmsford, GB;
Inventors:
Ian J. Forster, Chelmsford, GB;
Michael G. Ginn, Chelmsford, GB;
Assignee:
Mineral Lassen LLC, Las Vegas, NV (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06Q 20/00 (2006.01);
U.S. Cl.
CPC ...
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.