Patent ID: 9131270
Filing Date: 2015-09-08
Classification: H04H,H04N

Abstract:
1. A method to identify media sources, the method comprising: comparing, with a processor, meter signatures generated from presented media with reference signatures generated from reference media provided by a plurality of media sources, the meter signatures and the reference signatures having respective timestamps; determining, with the processor, whether a first time difference between a first meter signature and a second meter signature is equivalent to a second time difference between a first reference signature determined to match the first meter signature and a second reference signature determined to match the second meter signature, the first and second reference signatures being associated with a first one of the media sources; in response to determining that the first time difference and the second time difference are equivalent, appending, with the processor, the second reference signature to a first tracking segment associated with the first one of the media sources to cause a first time length associated with the first tracking segment to be increased based on a respective timestamp associated with the second reference signature; and evaluating, with the processor, the first time length to determine whether the first one of the media sources provided the presented media.