New patents are issued by the USPTO on Tuesdays. This week's Spotlight Patents concern aspects of digital fingerprinting and digital watermarking. Assigned to Websense, the first patent addresses techniques for efficient detection of fingerprinted data and information. Assigned to Digimarc, the second patents addresses techniques for detecting conflicts between multiple different encoded signals within imagery.
9,692,762, "Systems and methods for efficient detection of fingerprinted data and information," assigned to Websense, LLC
The disclosed embodiments provide systems, methods, and apparatus for efficient detection of fingerprinted content and relate generally to the field of information (or data) leak prevention. Particularly, a compact and efficient repository of fingerprint ingredients is used to analyze content and determine the content's similarity to previously fingerprinted content. Some embodiments employ probabilistic indications regarding the existence of fingerprint ingredients in the repository.
9,690,967, "Detecting conflicts between multiple different encoded signals within imagery," assigned to Digimarc.
This disclosure relates to advanced signal processing technology including steganographic embedding and digital watermarking. One combination disclosed in the description is an image processing apparatus including: electronic memory for storing an image, in which the image comprises at least a 1D or 2D barcode represented therein and a first encoded signal encoded therein, the 1D or 2D barcode comprising a first plural-bit code and the first encoded signal comprising a second plural-bit code; means for decoding the 1D or 2D barcode from the image to obtain the first plural-bit code; means for analyzing data representing the image to obtain the second plural-bit code from the first encoded signal; means for determining whether the second plural-bit code conflicts with the first plural-bit code; and means for generating a conflict map, the conflict map comprising an identification of a code conflict, and a spatial location of the code conflict relative to the image. Of course, other features and combinations are described as well.