New pending patent applications are published by the USPTO on Thursdays. Today's Spotlight Applications concern aspects of digital watermarking and digital fingerprinting. Assigned to Sharp (JP), the first application discloses techniques for decoding a content bitstream including receiving a respective watermark associated with different portions of said content bitstream. Assigned to Facebook, the second application discloses techniques for detecting commercials based on audio fingerprinting.
20170070790, "A method of decoding a content bitstream," assigned to Sharp (JP).
Abstract
A method of decoding a content bitstream including at least one of an audio bitstream and a video bitstream is disclosed. This invention comprises: (a) receiving said content bitstream; (b) receiving a respective watermark associated with different portions of said content bitstream; (c) decoding meta-data encoded within each of said respective watermark associated with said different portions of said content bitstream; (d) wherein a first said meta-data encoded within a first one of said watermarks includes content and signal server communication information.20170070774, "Commercial detection based on audio fingerprinting," assigned to Facebook.
Abstract
A commercial detection system generates a probe audio fingerprint of an audio signal associated with a media stream on a broadcast channel and determines whether the media stream has commercial content based on analysis of the probe audio fingerprint. The commercial detection system determines whether a same match between the probe audio fingerprint and a reference audio fingerprint is observed across multiple broadcast channels. Responsive to the number of same matches exceeding a predetermined threshold, the commercial detection system determines that the media stream has commercial content. The commercial detection system may also apply a trained feature analysis model to extracted acoustic features of the audio signal. The commercial detection system determines whether the media stream has commercial content based on a confidence score assigned to the probe audio fingerprint. The commercial detection system reduces false positive detection using program guide information of the media stream.
