New patents are issued by the USPTO on Tuesdays. This week's Spotlight Patents concern aspects of digital fingerprinting and digital watermarking. Assigned to Enswers (KR), the first patent concerns an advertisement detection system and method based on fingerprints. Assigned to NOA, the second patent concerns techniques for redacting video for compression and identification of releasing party.
10,284,922, "Advertisement detection system and method based on fingerprints," assigned to Enswers Co., Ltd. (KR).
The present invention relates to an advertisement detection system based on fingerprints, and provides an advertisement detection systems based on fingerprints, including a content stream storage unit for storing broadcast content in real time, a section selection unit for selecting a reference section and a test section from broadcast content stored by the content stream storage unit, a fingerprint extraction unit for extracting fingerprints from the reference section and the test section selected by the section selection unit using one or more methods, a fingerprint matching unit for comparing the fingerprints from the test section and the reference section, extracted by the fingerprint extraction unit, with each other and then performing matching between the fingerprints, an advertisement section determination unit for determining advertisement segments from the test section based on results of the matching performed by the fingerprint matching.
10,284,885, "Method and apparatus for redacting video for compression and identification of releasing party," assigned to NOA, Inc.
A method and system for protecting video and image files processes from original files to detect skin tones of persons appearing in the media. Pixels determined to contain skin tones are blurred or blacked out, and the pixel locations and their original color values are stored in a metadata file. The metadata file is encrypted and stored with the redacted video file. Thereafter, when an authorized person wants to see an unredacted version of the video, the system decrypts the metadata and reconstituted the video, replacing the redacted pixels with their original color values, and inserting a unique watermark into the video that identifies the requesting person. The watermarked video is then provided to the requesting person.