Television proximity sensor

Interactive video distribution systems – Use surveying or monitoring

Reexamination Certificate

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Details

C725S017000, C725S019000

Reexamination Certificate

active

07100181

ABSTRACT:
Systems and methods for determining whether a television is on and in as near proximity are provided. An example system includes a sensor, an analog-to-digital converter, and a digital signal processor. The digital signal processor processes a set of digital audio samples detected by the sensor to determine if the sensor is in near proximity to a television in an on state.

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International Search Report from corresponding international patent application serial no. PCT/US 02/12333 dated Apr. 7, 2003.

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