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

1. A method comprising:

generating a set of fingerprints based on a multimedia signal,

the set of fingerprints including a first fingerprint among the set of fingerprints,

the first fingerprint being generated based on content of a segment of the multimedia signal among a plurality of segments of the multimedia signal;

determining that the first fingerprint among the set of fingerprints matches a second fingerprint stored in a first database,

a second database storing a representation of an action as being associated with the second fingerprint and as corresponding to a trigger time point that is at least one of a predetermined distance from the start of the segment or a predetermined distance from the end of the segment,

the determining being performed by a processor of a machine based on a comparison of the first fingerprint among the set of fingerprints with the second fingerprint stored in the first database; and

retrieving the representation of the action stored as being associated with the second fingerprint and as corresponding to the trigger time point.

2. The method of claim 1 , wherein:

the second fingerprint is generated based on the content of the segment of the multimedia signal.

3. The method of claim 1 , wherein:

the set of fingerprints includes fingerprints of variable size.

4. The method of claim 1 , wherein:

the set of fingerprints includes fingerprints of fixed size.

5. The method of claim 1 , wherein:

the plurality of segments of the multimedia signal are of variable size.

6. The method of claim 1 , wherein:

the plurality of segments of the multimedia signal are of fixed size.

7. The method of claim 1 further comprising:

executing the action at the corresponding trigger time point based on the retrieved representation of the action.

8. The method of claim 7 further comprising:

receiving a user input while waiting a period of time after the executing of the action at the corresponding trigger time point.

9. The method of claim 1 further comprising:

determining that the action did not execute at the corresponding trigger time point; and

nullifying a user input in response to the determining that the action did not execute at the corresponding trigger time point.

10. The method of claim 1 further comprising:

accessing the first database that stores the second fingerprint; and wherein

the determining that the first fingerprint matches the second fingerprint is responsive to

the accessing of the first database.

11. The method of claim 10 , wherein:

the first and second databases are provided by different parties.

12. The method of claim 10 , wherein:

the accessing of the first database includes receiving the first database at a device configured to generate the set of fingerprints based on the multimedia signal.

13. The method of claim 1 further comprising:

accessing the second database that stores the representation of the action; and wherein

the retrieving of the representation of the action is from the second database.

14. The method of claim 13 , wherein:

the first and second databases are provided by different parties.

15. The method of claim 1 , wherein:

the accessing of the second database includes receiving the second database at a device configured to generate the set of fingerprints based on the multimedia signal.

16. The method of claim 1 , wherein:

the trigger time point is defined with respect to the content of the segment of the multimedia signal.

17. The method of claim 16 , wherein:

at least one of the start of the segment or the end of the segment is defined with respect to the content of the segment of the multimedia signal.

18. The method of claim 1 , wherein:

the multimedia signal includes at least one of an audio signal or a video signal.

19. The method of claim 1 , wherein:

the action includes at least one of:

retrieving and displaying additional information on a display,

retrieving and playing additional information via a speaker,

presenting biography data for an actor appearing in the content of the segment of the multimedia signal,

presenting a link to a website,

playing a local weather forecasts,

playing a local commercial,

interrupting a playback of the multimedia signal,

playing another multimedia signal instead of the multimedia signal for a period of time,

executing a control command, and

preparing a device to receive a user input.

20. The method of claim 1 , wherein:

the generating of the set of fingerprints includes generating a continuous stream of fingerprints that includes the set of fingerprints.

21. The method of claim 1 , wherein:

the generating of the set of fingerprints includes generating segments of a stream of fingerprints.

22. A non-transitory machine-readable storage medium comprising instructions that, when executed by one or more processors of a machine, cause the machine to perform operations comprising:

generating a set of fingerprints based on a multimedia signal,

the set of fingerprints including a first fingerprint among the set of fingerprints,

the first fingerprint being generated based on content of a segment of the multimedia signal among a plurality of segments of the multimedia signal;

determining that the first fingerprint among the set of fingerprints matches a second fingerprint stored in a first database,

a second database storing a representation of an action as being associated with the second fingerprint and as corresponding to a trigger time point that is at least one of a predetermined distance from the start of the segment or a predetermined distance from the end of the segment,

the determining being performed by the one or more processors of the machine based on a comparison of the first fingerprint among the set of fingerprints with the second fingerprint stored in the first database; and

retrieving the representation of the action stored as being associated with the second fingerprint and as corresponding to the trigger time point.

23. The non-transitory machine-readable storage medium of claim 22 , wherein the operations further comprise:

executing the action at the corresponding trigger time point based on the retrieved representation of the action.

24. A system comprising:

a processor configured by a fingerprint detector that configures the processor to generate a set of fingerprints based on a multimedia signal,

the set of fingerprints including a first fingerprint among the set of fingerprints,

the first fingerprint being generated based on content of a segment of the multimedia signal among a plurality of segments of the multimedia signal;

the fingerprint detector further configuring the processor to determine that the first fingerprint among the set of fingerprints matches a second fingerprint stored in a first database,

a second database storing a representation of an action as being associated with the second fingerprint and as corresponding to a trigger time point that is at least one of a predetermined distance from the start of the segment or a predetermined distance from the end of the segment,

the determining being performed based on a comparison of the first fingerprint among the set of fingerprints with the second fingerprint stored in the first database; and

a receiver configured to retrieve the representation of the action stored as being associated with the second fingerprint and as corresponding to the trigger time point.

25. The system of claim 24 further comprising:

a playback module configured to execute the action at the corresponding trigger time point based on the retrieved representation of the action.

26. A method comprising:

generating a first fingerprint based on content of a segment of a multimedia signal among a plurality of segments of the multimedia signal;

determining that the first fingerprint generated based on the content of the segment matches a second fingerprint that is stored in a first database and associated with a representation of an action stored in a second database,

the second database storing the representation of the action as corresponding to the content of the segment of the multimedia signal,

the second database storing the representation as corresponding to at least one of a predetermined distance from the start of the segment or a predetermined distance from the end of the segment,

the determining being performed by a processor of a machine based on a comparison of the first fingerprint generated based on the content of the segment to the second fingerprint stored in the first database;

retrieving the representation of the action stored in the second database as being associated with the second fingerprint and corresponding to the content of the segment of the multimedia signal; and

executing the action based on the retrieved representation of the action.

27. The method of claim 26 , wherein:

at least one of the start of the segment or the end of the segment is defined with respect to the content of the segment of the multimedia signal.

28. A non-transitory machine-readable storage medium comprising instructions that, when executed by one or more processors of a machine, cause the machine to perform operations comprising:

generating a first fingerprint based on content of a segment of a multimedia signal among a plurality of segments of the multimedia signal;

determining that the first fingerprint generated based on the content of the segment matches a second fingerprint that is stored in a first database and associated with a representation of an action stored in a second database,

the second database storing the representation of the action as corresponding to the content of the segment of the multimedia signal,

the second database storing the representation as corresponding to at least one of a predetermined distance from the start of the segment or a predetermined distance from the end of the segment,

the determining being performed by the one or more processors of the machine based on a comparison of the first fingerprint generated based on the content of the segment to the second fingerprint stored in the first database;

retrieving the representation of the action stored in the second database as being associated with the second fingerprint and corresponding to the content of the segment of the multimedia signal; and

executing the action based on the retrieved representation of the action.

29. The non-transitory machine-readable storage medium of claim 28 , wherein:

at least one of the start of the segment or the end of the segment is defined with respect to the content of the segment of the multimedia signal.

30. A system comprising:

a processor configured by a fingerprint detector that configures the processor to generate a first fingerprint based on content of a segment of a multimedia signal among a plurality of segments of the multimedia signal;

the fingerprint detector further configuring the processor to determine that the first fingerprint generated based on the content of the segment matches a second fingerprint that is stored in a first database and associated with a representation of an action stored in a second database,

the second database storing the representation of the action as corresponding to the content of the segment of the multimedia signal,

the second database storing the representation as corresponding to at least one of a predetermined distance from the start of the segment or a predetermined distance from the end of the segment,

the determining being performed by a processor of a machine based on a comparison of the first fingerprint generated based on the content of the segment to the second fingerprint stored in the first database;

a receiver configured to retrieve the representation of the action stored in the second database as being associated with the second fingerprint and corresponding to the content of the segment of the multimedia signal; and

a playback module configured to execute the action based on the retrieved representation of the action.

31. The system of claim 30 , wherein:

at least one of the start of the segment or the end of the segment is defined with respect to the content of the segment of the multimedia signal.