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US 2013/0312121 A1Published application
Non-authentic disc deactivation method
AssigneeThomson Licensing
InventorJohn Matthew Town
Life of this patent
Estimating the term…
Abstract
An optical disc undergoes authentication by reading a designated area on the optical disc containing authentication data. Following authentication, the designated area undergoes irradiation by the laser beam that reads the optical disc to erase recordable sectors in the designated area when the optical disc comprises a recordable disc to render unreadable data contained in the designated area for disc authentication.
Claims6
A method for deactivating a counterfeit/pirated non-authentic optical disc, comprising the steps of:
- reading a designated area on the optical disc to obtain information for authenticating the disc, and upon disc authentication, then
- heating the designated area to erase recordable sectors in the designated area when the disc comprises a recordable disc to render unreadable the data contained in the designated area for disc authentication.
A method for deactivating a counterfeit optical disc, comprising the steps of:
- reading a designated area on the optical disc by a laser beam to obtain information for authenticating the optical disc, and upon disc authentication, then
- heating the designated area by the laser beam that reads the optical disc to erase recordable sectors in the designated area when the optical disc comprises a recordable disc to render unreadable data contained in the designated area for disc authentication.
Dependencies are inferred from the claim text.