Methods and apparatus for audience measurement using global signature representation and matching
First Claim
1. A method to determine a time offset between a first media signature including a first sequence of first data pairs and a second media signature including a second sequence of second data pairs, the method comprising:
- comparing, via a processor, ones of the first data pairs in the first sequence with ones of the second data pairs in the second sequence to determine original time differences between respective combinations of the ones of the first data pairs and the ones of the second data pairs;
scaling and truncating, via the processor, the original time differences to determine adjusted time differences between respective combinations of the ones of the first data pairs and the ones of the second data pairs;
determining, via the processor, a histogram including bins representative of the adjusted time differences, a first one of the bins of the histogram being representative of a first one of the adjusted time differences, a value of the first one of the bins being determined to correspond to a count of the combinations of the ones of the first data pairs and the ones of the second data pairs having respective adjusted time differences corresponding to the first one of the adjusted time differences; and
selecting, via the processor, a bin of the histogram to correspond to the time offset between the first media signature and the second media signature.
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Accused Products
Abstract
Disclosed example methods to determine a time offset between a first media signature having a first sequence of first data pairs and a second media signature having a second sequence of second data pairs include comparing ones of the first data pairs in the first sequence with ones of the second data pairs in the second sequence to determine original time differences between respective combinations of the ones of the first data pairs and the ones of the second data pairs. Such example methods also include scaling and truncating the original time differences to determine scaled time differences between respective combinations of the ones of the first data pairs and the ones of the second data pairs. Such example methods further include determining a histogram comprising bins representative of the scaled time differences, and selecting a histogram bin to correspond to the time offset between the first and second signatures.
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Citations
21 Claims
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1. A method to determine a time offset between a first media signature including a first sequence of first data pairs and a second media signature including a second sequence of second data pairs, the method comprising:
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comparing, via a processor, ones of the first data pairs in the first sequence with ones of the second data pairs in the second sequence to determine original time differences between respective combinations of the ones of the first data pairs and the ones of the second data pairs; scaling and truncating, via the processor, the original time differences to determine adjusted time differences between respective combinations of the ones of the first data pairs and the ones of the second data pairs; determining, via the processor, a histogram including bins representative of the adjusted time differences, a first one of the bins of the histogram being representative of a first one of the adjusted time differences, a value of the first one of the bins being determined to correspond to a count of the combinations of the ones of the first data pairs and the ones of the second data pairs having respective adjusted time differences corresponding to the first one of the adjusted time differences; and selecting, via the processor, a bin of the histogram to correspond to the time offset between the first media signature and the second media signature. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A tangible computer readable storage device or storage disk comprising computer readable instructions which, when executed, cause a computing device to at least:
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access a first media signature including a first sequence of first data pairs and a second media signature including a second sequence of second data pairs; compare ones of the first data pairs in the first sequence with ones of the second data pairs in the second sequence to determine original time differences between respective combinations of the ones of the first data pairs and the ones of the second data pairs; scale and truncate the original time differences to determine adjusted time differences between respective combinations of the ones of the first data pairs and the ones of the second data pairs; determine a histogram including bins representative of the adjusted time differences, a first one of the bins of the histogram being representative of a first one of the adjusted time differences, a value of the first one of the bins being determined to correspond to a count of the combinations of the ones of the first data pairs and the ones of the second data pairs having respective adjusted time differences corresponding to the first one of the adjusted time differences; and select a bin of the histogram to correspond to the time offset between the first media signature and the second media signature. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An apparatus to determine a time offset between a first media signature including a first sequence of first data pairs and a second media signature including a second sequence of second data pairs, the apparatus comprising:
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means for comparing ones of the first data pairs in the first sequence with ones of the second data pairs in the second sequence to determine original time differences between respective combinations of the ones of the first data pairs and the ones of the second data pairs; means for scaling and truncating the original time differences to determine adjusted time differences between respective combinations of the ones of the first data pairs and the ones of the second data pairs; means for determining a histogram including bins representative of the adjusted time differences, a first one of the bins of the histogram being representative of a first one of the adjusted time differences, a value of the first one of the bins being determined to correspond to a count of the combinations of the ones of the first data pairs and the ones of the second data pairs having respective adjusted time differences corresponding to the first one of the adjusted time differences; and means for selecting a bin of the histogram to correspond to the time offset between the first media signature and the second media signature. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification