Patent ID: 8577077

Claim:
A system for identifying motion video/audio content by means of comparing a video A to a registered video B so as to determine if they are originally the same as each other, wherein said system at least comprises a fingerprint extractor A for fingerprint A from the video A; a fingerprint database for the registered video B; and a matcher which is adapted to search from the fingerprint database for the registered fingerprint B of the video B by means of comparison of fingerprint A with a shifting window of a possible fingerprint B, so as to determine that the video A is identical to the video B if a match is found, wherein a SAD operation module and a SSAD operation module are provided, the SAD operation module is adapted to calculate the sum of absolute difference (SAD) of every corresponding data samples between the fingerprint A and fingerprint B, the SAD operation is repeated for every video frames of the fingerprint A and fingerprint B, and the SSAD operation module is adapted to add all the SAD operation results together to form a single sum of SAD (SSAD) number, the same process is then repeated by shifting the position of possible fingerprint B relative to A by one frame, each such shift results in a new SSAD value generated, so a series of SSAD values are generated and saved as a SSAD array, so a fingerprint match is identified by a sharp drop in the SSAD values just before the match and a sharp increase in SSAD values just after the match.