Broadcast Source Identification Based on Matching Broadcast Signal Fingerprints

摘要

An end user can sample a radio or television broadcast, generate a user representation of the broadcast sample, and send the user representation to a comparison system, which also receives known representations of content broadcast by multiple different stations. The known representations are stored in a continuous fashion, and represent actually broadcast content. The comparison system identifies the source of the broadcast sample by comparing the user representation to the known representations associated with each of the different stations. By comparing two representations of content that was actually broadcast, a broadcast source can be identified without requiring the use of watermarks, timestamps, or a database of discreet content items.

主权项

1. A system comprising:
a field recorder configured to:
capture content from a plurality of transmission sources during transmission of the content to users;generate a computer readable representation of the content; an end-user device configured to:
receive particular content from a particular transmission source of the plurality of transmission sources;generate an output of the particular content in a human perceptible format;generate a computer readable representation of the particular content; a channel identification server coupled to the field recorder and the end-user device via a communications network, the channel identification server configured to:
receive the computer readable representation of the content from the field recorder;receive the computer readable representation of the particular content from the end-user device;compare the computer readable representation of the content from the field recorder to the computer readable representation of the particular content from the end-user device to generate a comparison result; andidentify the particular transmission source based on the comparison result.