Patents by Inventor David Clifford Blight

David Clifford Blight has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Systems and methods of providing content protection for digital video products
    Patent number: 7464271
    Abstract: A digital watermark is affixed to an existing image file prior to being copied onto a destination media. In one embodiment, the image file is encrypted using content scrambling system (CSS) encryption. In another embodiment, the image file is also compressed prior to being copied onto the destination digital video media. A unique identification code associated with an intended recipient may be embedded into the digital watermark. In one embodiment, this unique identification code is stored in a database, along with information particular to the intended recipient. In this fashion, the identity of the intended recipient of the destination digital video media may be determined.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: December 9, 2008
    Assignees: Sony Corporation, Sony Pictures Entertainment Inc.
    Inventors: Brian David Lakamp, David Clifford Blight