Systems and methods for identifying a source of media content based on a log of fingerprints

摘要

Systems and methods are described for identifying a content source of media content being transmitted to a viewer in situations when a specific media asset is being transmitted to the viewer from two different content sources nearly simultaneously. For example, if a certain movie is being broadcast at nearly the same time by two different channels, the system is able to identify the channel that the viewer is watching. The system performs the identification by obtaining fingerprints for two different channels, matching the fingerprints based on time and then finding a divergent pair of fingerprints by iterating in reverse chronological order through the pairs and comparing the fingerprints. The system then compares the fingerprints to fingerprints in a log that stores fingerprints and corresponding generation times for content that the viewer is consuming. The matching fingerprint corresponds to the correct content source.