Source detection apparatus and method for audience measurement
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United States of America Patent
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Apr 30, 2013
Grant Date -
Apr 26, 2012
app pub date -
Apr 22, 2011
filing date -
Jan 22, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
Apparatus, methods and articles of manufacture for determining an operating mode of a recording/playing device are disclosed. An example apparatus includes an extractor to extract signatures associated with a first signal associated with a tuner that is to tune to a program signal, a second signal associated with a recording/playing device that is to at least one of record and play a program, and a third signal associated with a receiver coupled to the recording/playing device. The example apparatus also includes a recording detector to detect a recording signal generated by the recording/playing device during recording of the program to form a recorded program. Also included is a correlator to correlate the first, second, and third signals and a processor to identify the operating mode of the recording/playing device based on detection of the recording signal and correlation of two or more of the first, second, and third signals.
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