Method and device for generating and detecting a fingerprint functioning as a trigger marker in a multimedia signal

摘要

A device is configured to perform a method that detects a trigger marker for an action corresponding to a segment of a multimedia signal. A fingerprint is generated based on the segment of the multimedia signal at a trigger time point. The generated fingerprint is stored in a database and communicated to the device. During playback of the multimedia signal, fingerprints of segments of the multimedia signal are generated and matched against fingerprints in the database. When a match is found, one or more associated actions for the segment are retrieved by the device. The trigger time point may be determined as a time point near or at the segment of the multimedia signal with the matched fingerprint. In this way, trigger markers for actions may be enabled without modifying the multimedia signal.

主权项

1. A method comprising:
accessing a database that associates a first fingerprint with a first action, the first fingerprint being for a first trigger time point of a plurality of trigger time points within a multimedia signal, each trigger time point of the plurality of trigger time points corresponding to a segment of a plurality of segments of the multimedia signal; receiving a second trigger time point of the plurality of trigger time points and a second action; deriving, by a processor of a machine, a second fingerprint based on a segment of the multimedia signal that corresponds to the second trigger time point; and updating the database to associate the second fingerprint with the second action.