Patent ID: 6636689
Filing Date: 2003-10-21
Classification: G11B,H04N

Abstract:
A method for authenticating at least one of a media and data stored on said media, in order to prevent at least one of piracy, unauthorized access and unauthorized copying of the data stored on said media, wherein said media is modulated via at least one of pit depth, pit width and pit track comprising at least one authentication key or component thereof for authenticating whether at least one of said media and said data is authenticated, said method comprising the steps of:(a) reading the data from said media; (b) detecting the modulation of the at least one of said pit depth, pit width and pit track; (c) deriving an embedded authentication key or component thereof responsive to said detecting step (b); (d) comparing the embedded authentication key or component thereof to at least one authentication key or component thereof; (e) authenticating at least one of said media and said data responsive to said comparing step (d); and (f) outputting said data as at least one of audio, video, audio data, video data and digital data substantially free of the modulation of the at least one of the pit depth, pit width and pit track.