Media channel identification with multi-match detection and disambiguation based on location

1. A method comprising:

determining, by a computing system, that a digital fingerprint of media content being rendered by a media presentation device matches multiple reference fingerprints each corresponding with a different respective channel;

responsive to determining that the digital fingerprint matches the multiple reference fingerprints each corresponding with a different respective channel, performing by the computing system disambiguation based at least in part on location of the media presentation device, to determine which channel the media presentation device is receiving the media content on, wherein performing disambiguation based at least in part on the location of the media presentation device, to determine which channel the media presentation device is receiving the media content on, comprises (i) determining the location of the media presentation device, (ii) comparing the determined location of the media presentation device with locations indicated for the multiple reference fingerprints to find that the location of the media presentation device matches a location indicated for a particular reference fingerprint of the multiple reference fingerprints, and (iii) establishing based at least on the finding that the location of the media presentation device matches the location indicated for the particular reference fingerprint of the multiple reference fingerprints, that a channel associated with the particular reference fingerprint is the channel that the media presentation device is receiving the media content on; and

taking action by the computing system based on the determined channel.

2. The method of claim 1 , wherein the computing system is an entity other than the media presentation device, and wherein the digital fingerprint is generated by the media presentation device, the method further comprising:

receiving by the computing system, from the media presentation device, the digital fingerprint of media content being rendered by the media presentation device.

3. The method of claim 1 , wherein the multiple reference fingerprints are selected from a plurality of reference fingerprints in reference data, and wherein determining that the digital fingerprint of media content being rendered by the media presentation device matches the multiple reference fingerprints comprises:

comparing the digital fingerprint of media content being rendered by the media presentation device with the plurality of reference fingerprints in the reference data; and

based on the comparing, determining that the digital fingerprint of media content being rendered by the media presentation device matches the multiple reference fingerprints.

4. The method of claim 3 , further comprising detecting and flagging a multi-match group comprising the multiple reference fingerprints, wherein determining that the digital fingerprint of media content being rendered by the media presentation device matches the multiple reference fingerprints comprises determining that the digital fingerprint matches the reference fingerprints of the flagged multi-match group.

5. The method of claim 1 , wherein determining the location of the media presentation device is based on an item selected from the group consisting of (i) a network address of the media presentation device and (ii) location information reported by the media presentation device.

6. The method of claim 1 , wherein determining the location of the media presentation device comprises:

detecting location-specific content based on a fingerprint evaluation of the media content being rendered by the media presentation device; and

determining the location of the media presentation device based on the detected location-specific content.

7. The method of claim 6 , wherein the location-specific content comprises a local commercial or local news program, and wherein determining the location of the media presentation device based on the detected location-specific content comprises:

determining a location associated with the local commercial or local news program; and

based on the determined location associated with the local commercial or local news program, determining that the location of the media presentation device is the location associated with the local commercial or local news program.

8. The method of claim 1 , wherein performing disambiguation based at least in part on the location of the media presentation device comprises performing the disambiguation based at least in part on the location of the media presentation device and based at least in part on an identity of a distributor of the media content being rendered by the media presentation device.

9. The method of claim 8 , wherein performing disambiguation based at least in part on the location of the media presentation device and based at least in part on an identity of a distributor of the media content being rendered comprises:

determining that two or more of the matching reference fingerprints correspond with channels in the same location as each other;

identifying the distributor of the media content being rendered by the media presentation device; and

selecting, as the particular reference fingerprint, one of the two or more matching reference fingerprints based at least in part on the selected matching reference fingerprint corresponding with a channel provided by the identified distributor of the media content being rendered by the media presentation device.

10. The method of claim 1 , wherein performing disambiguation based at least in part on location of the media presentation device comprises:

detecting that the particular reference fingerprint of the multiple reference fingerprint represents location-specific content and that the digital fingerprint of media content being rendered by the media presentation device also represents the location-specific content; and

based at least on the detecting, concluding that the channel corresponding with the particular reference fingerprint is the channel being rendered by the media presentation device.

11. The method of claim 1 , wherein taking action based on the determined channel comprises causing supplemental channel-specific content to be presented in conjunction with the media content being rendered by the media presentation device.

12. The method of claim 1 , wherein the media content comprises content selected from the group consisting of video content and audio content.

13. The method of claim 1 , wherein the media presentation device carries out one or more of the determining, the performing disambiguation, and the taking action.

14. A non-transitory computer readable medium having stored thereon instructions executable by a processing unit to carry out operations comprising:

determining that a digital fingerprint of media content being rendered by a media presentation device matches multiple reference fingerprints each corresponding with a different respective channel;

responsive to determining that the fingerprint matches the multiple reference fingerprints each corresponding with a different respective channel, performing disambiguation based at least in part on location of the media presentation device, to determine which channel carries the media content being rendered by the media presentation device, wherein performing disambiguation based at least in part on the location of the media presentation device, to determine which channel carries the media content being rendered by the media presentation device, comprises (i) determining the location of the media presentation device, (ii) comparing the determined location of the media presentation device with locations indicated for the multiple reference fingerprints to find that the location of the media presentation device matches a location indicated for a particular reference fingerprint of the multiple reference fingerprints, and (iii) establishing based at least on the finding that the location of the media presentation device matches the location indicated for the particular reference fingerprint of the multiple reference fingerprints, that a channel associated with the particular reference fingerprint is the channel carrying the media content being rendered by the media presentation device; and

taking action based on the determined channel.

15. A system comprising:

a network communication interface;

a processing unit;

non-transitory data storage; and

program instructions stored in the non-transitory data storage and executable by the processing unit to carry out operations including:

receiving from a media presentation device, via the network communication interface, a digital fingerprint of media content being rendered by the media presentation device,

determining that the received digital fingerprint matches multiple reference fingerprints each corresponding with a different respective channel,

responsive to determining that the received digital fingerprint matches the multiple reference fingerprints each corresponding with a different respective channel, performing disambiguation based at least in part on a location of the media presentation device, to determine which channel carries the media content being rendered by the media presentation device, wherein performing disambiguation based at least in part on the location of the media presentation device, to determine which channel carries the media content being rendered by the media presentation device, comprises (i) determining the location of the media presentation device, (ii) comparing the determined location of the media presentation device with locations indicated for the multiple reference fingerprints to find that the location of the media presentation device matches a location indicated for a particular reference fingerprint of the multiple reference fingerprints, and (iii) establishing based at least on the finding that the location of the media presentation device matches the location indicated for the particular reference fingerprint of the multiple reference fingerprints, that a channel associated with the particular reference fingerprint is the channel carrying the media content being rendered by the media presentation device, and

taking action based on the determined channel.

16. The system of claim 15 , wherein performing disambiguation based at least in part on the location of the media presentation device comprises performing disambiguation based at least in part on (i) the location of the media presentation device and (ii) an identity of a media content distributor that provides media content to a receiver feeding the media presentation device.

17. The system of claim 15 , further comprising the media presentation device, wherein the media presentation device is configured to generate the digital fingerprint and to transmit the digital fingerprint.

18. The system of claim 15 , wherein taking action based on the determined channel comprises causing supplemental channel-specific content to be presented in conjunction with the media content being rendered by the media presentation device.

19. The method of claim 1 , wherein taking action based on the determined channel comprises recording presentation of the determined channel for use in a channel ratings system.

20. The non-transitory computer readable medium of claim 14 , wherein taking action based on the determined channel comprises causing supplemental channel-specific content to be presented in conjunction with the media content being rendered by the media presentation device.