Authentication of physical and electronic media objects using digital watermarks
AM Alattar - US Patent 7,822,225, 2010 - Google Patents
A content watermarking method derives a watermark key from data representing content. In
one particular method, a plural symbol message is algorithmically transformed in …
one particular method, a plural symbol message is algorithmically transformed in …
Authentication of Physical and Electronic Media Objects Using Digital Watermarks
AM Alattar - US Patent App. 12/207,211, 2009 - Google Patents
Digital watermark methods for encoding auxiliary data into a host signal are used to
authenticate physical and electronic objects. One such method computes a content specific …
authenticate physical and electronic objects. One such method computes a content specific …
Authentication of physical and electronic media objects using digital watermarks
AM Alattar - US Patent 7,822,225, 2010 - freepatentsonline.com
A content watermarking method derives a watermark key from data representing content. In
one particular method, a plural symbol message is algorithmically transformed in …
one particular method, a plural symbol message is algorithmically transformed in …
Authentication of Physical and Electronic Media Objects Using Digital Watermarks
AM Alattar - US Patent App. 12/207,211, 2009 - freepatentsonline.com
Digital watermark methods for encoding auxiliary data into a host signal are used to
authenticate physical and electronic objects. One such method computes a content specific …
authenticate physical and electronic objects. One such method computes a content specific …