On Thursdays the USPTO publishes new pending patent applications. Today's Spotlight Applications concern various aspects of digital fingerprinting and watermarking. Assigned to Barracuda, the first application discloses techniques for Peer-to-Peer traffic control using fingerprinting. Assigned to the Korea Advanced Institute of Science and Technology, the second application discloses techniques for reversible image watermarking based on integer to integer wavelet transforms.
A system, apparatus, and method for controlling peer to peer traffic at a network gateway or server. Suspected peer to peer traffic is identified heuristically and collected for content analysis. Content digital fingerprint pattern matching software is received from a remote server. Peer to peer traffic is selectively disposed of.
20090116685, "Method For Reversible Image Watermarking Based On Integer-to-Integer Wavelet Transform," assigned to the Korea Advanced Institute of Science and Technology (KR).
Enhanced method for embedding watermarks based on integer-to-integer wavelet transform is provided. The method according to the present invention includes the steps of: (A) dividing an original image (X.times.Y) to a plurality of image blocks (M.times.N); (B) selecting image blocks for embedding an location information that indicates image blocks to be watermarked;(C) embedding the location information into the image blocks selected in the step (B); and (D) embedding watermarks into remaining image blocks which are not selected in the step (B).