AUTHENTICATING POLYMERIC FILM

申请公布号：US2007280073(A1)

申请号：US20070755690

申请日期：2007.05.30

申请公布日期：2007.12.06

申请人：

VERIFICATION TECHNOLOGIES, INC.

发明人：SELINFREUND RICHARD H.

分类号：G11B19/04

主分类号：G11B19/04

摘要：A piracy protection digital recording medium comprising an optical recording medium coated with a polymeric film containing authentication state change material therein, the authentication state change material being readable by a digital reader of such optical recording medium.

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