Automatic content recognition with local matching

A method comprising:

• generating, by a media device, a first query fingerprint of first media content being consumed by the media device;
• sending, by the media device, the first query fingerprint to a server;
• in response to the server finding a match to the first query fingerprint:
• (i) receiving, by the media device from the server, an identification of a first channel being watched via the media device;
• (ii) receiving, from the server, a first plurality of fingerprints generated from first upcoming media content to be displayed on the first channel after the first media content;
• and
• (iii) receiving, from the server, a second plurality of fingerprints of second upcoming media content to be displayed on a second channel different from the first channel;
• storing, by the media device, the first plurality of fingerprints and the second plurality of fingerprints in a local database of the media device;
• generating a second query fingerprint of second media content being consumed by the media device;
• comparing, by the media device, the second query fingerprint with the first plurality of fingerprints and with the second plurality of fingerprints stored in the local database;
• and
• determining, by the media device, whether the media device remains set on the first channel or has changed to the second channel based on the comparison of the second query fingerprint.

A non-transitory computer-readable medium comprising program instructions that, when executed by at least one processor of a media device, cause the media device to perform operations comprising:

• generating a first query fingerprint of first media content being consumed by the media device;
• sending the first query fingerprint to a server;
• in response to the server finding a match to the first query fingerprint:
• (i) receiving, from the server, an identification of a first channel being watched via the media device;
• (ii) receiving, from the server, a first plurality of fingerprints generated from first upcoming media content to be displayed on the first channel after the first media content;
• and
• (iii) receiving, from the server, a second plurality of fingerprints of second upcoming media content to be displayed on a second channel different from the first channel;
• storing the first plurality of fingerprints and the second plurality of fingerprints in a local database of the media device;
• generating a second query fingerprint of second media content being consumed by the media device;
• comparing the second query fingerprint with the first plurality of fingerprints and with the second plurality of fingerprints stored in the local database;
• and
• determining whether the media device remains set on the first channel or has changed to the second channel based on the comparison of the second query fingerprint.