Television viewership monitoring system employing audio channel

Telecommunications – Audience survey or program distribution use accounting

Patent

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Details

348 4, 455 63, H04H 100, H04N 710

Patent

active

061120537

ABSTRACT:
The present invention provides an system, apparatus, and method of recording a viewer's television viewership habits. Sensors passively monitor the audio signal and video signal emanating from the television. By matching the audio signal in the source and emanating from the television and by matching television frame synchronization signal and the television source synchronization signal an unambiguous identification of the viewed channel is made.

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