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Methods and apparatus to enforce a power off state of an audience measurement device during shipping

  • US 8,799,937 B2
  • Filed: 02/23/2012
  • Issued: 08/05/2014
  • Est. Priority Date: 12/30/2008
  • Status: Active Grant
First Claim
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1. A method of operating a media detector, comprising:

  • placing a media detector in a shipping power mode in which the media detector is at least partially powered down;

    collecting audio data at the media detector;

    comparing a first threshold to a difference between a first characteristic of the audio data at a first frequency and a second characteristic of the audio data at a second frequency;

    determining whether the comparison of the first threshold and the difference indicates that the media detector is likely in a package; and

    maintaining the media detector in the shipping power mode when the comparison indicates that the media detector is likely in the package.

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