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:
playing back multimedia content on a multimedia playback device, including providing at least some of the multimedia content on a display associated with the multimedia playback device; determining, by a processor of the multimedia playback device, a trigger fingerprint from a segment of the multimedia content being played back on the multimedia playback device; accessing a plurality of reference fingerprints, each reference fingerprint among the plurality of reference fingerprints having been previously derived from a respective segment of the multimedia content and associated with at least one corresponding reference action; obtaining a match between the trigger fingerprint and a particular reference fingerprint among the plurality of reference fingerprints; identifying a particular corresponding reference action associated with the particular reference fingerprint, the particular corresponding reference action being associated with a time point indicating when, in the multimedia content, the particular corresponding reference action is to be performed; and performing, by the processor of the multimedia playback device, the particular corresponding reference action, wherein performance of the particular reference action causes the multimedia playback device to provide, on the display associated with the multimedia playback device, information related to the segment of the multimedia content.