New pending patent applications are published on Thursdays by the USPTO. Today's Spotlight Applications concern aspects of digital fingerprinting and digital watermarking. Assigned to Thomson, the first applications discloses techniques for clustering and synchronizing multimedia contents. Assigned to Digimarc, the second applications discloses techniques for encoding, decoding and interpreting auxiliary data in media signals.
20150310008, "Clustering and synchronizing multimedia contents," assigned to Thomson Licensing (FR).
A method and a device for clustering sequences of multimedia contents with regard to a certain event are recommended wherein mel-frequency cepstrum coefficients of the sequences audio tracks of the multimedia contents are used for clustering and synchronizing multimedia contents with regard to a certain event by computing salient mel-frequency cepstrum coefficients from mel-frequency cepstrum coefficient features and clustering sequences having an overlapping audio segment by comparing the salient mel-frequency cepstrum coefficients. Method and device provide an improvement in comparison to fingerprint detection.
20150302543, "Methods for encoding, decoding and interpreting auxiliary data in media signals," assigned to Digimarc.
The disclosure relates to digital watermarking, steganography, and specifically to message coding protocols used in conjunction with digital watermarking and steganographic encoding/decoding and payload interpretation methods. One claim recites a method for interpreting a data structure having fixed and variable message portions, the method comprising: processing the fixed message portion to determine a version of the variable message portion; decoding the entire payload field of the variable message portion according to the determined version; and interpreting only a portion of the decoded payload field according to the determined version. Of course, other features and claims are provided too.