DETECTION OF MEDIA LINKS IN BROADCAST SIGNALS
First Claim
1. A program identification system comprising:
- a meter to detect a media link embedded in a tuned program stream and to extract a broadcast signature from the tuned program stream, wherein the media link is broadcast with at least a first program and a second program different from the first program such that the media link does not uniquely identify either the first program or the second program; and
a comparator arranged to generate a subset of reference signatures from a library of reference signatures based upon the media link, and to compare the broadcast signature extracted by the meter to the subset of reference signatures to determine whether the broadcast signature is associated with the first program or the second program.
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Accused Products
Abstract
A detection apparatus includes a tuner tuned to the program and a meter coupled to the tuner and arranged to detect content ancillary information from the program tuned by the tuner. The content ancillary information may be a media link, closed captioning information, or the like. The meter may also be arranged to extract a broadcast signature from the program. A comparator compares the broadcast signature to a reference signature selected from a library of reference signatures based upon the content ancillary information. Broadcast signatures from unknown programs may be clustered at least partially on the basis of the content ancillary information.
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Citations
8 Claims
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1. A program identification system comprising:
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a meter to detect a media link embedded in a tuned program stream and to extract a broadcast signature from the tuned program stream, wherein the media link is broadcast with at least a first program and a second program different from the first program such that the media link does not uniquely identify either the first program or the second program; and a comparator arranged to generate a subset of reference signatures from a library of reference signatures based upon the media link, and to compare the broadcast signature extracted by the meter to the subset of reference signatures to determine whether the broadcast signature is associated with the first program or the second program. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification