Copy-protected compact disc and method for producing same

Details Copy-protected compact disc and method for producing same Copy-protected compact disc and method for producing same

2007-01-09

2007-01-09

Korzuch, William (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S030070, C369S059250

Reexamination Certificate

active

10386922

ABSTRACT:
The present application relates to a copy-protected compact disc and a method for producing the optical disc and preventing unauthorized copying. The contents of at least one of the lead-in items in the optical disc are altered so that it is no longer uniform, thereby making a copied disc effectively corrupted and unplayable.

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