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Methods, systems and apparatus for multi-purpose metering

  • US 9,185,457 B2
  • Filed: 06/08/2015
  • Issued: 11/10/2015
  • Est. Priority Date: 03/31/2006
  • Status: Active Grant
First Claim
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1. A method to perform media monitoring, comprising:

  • determining whether a portable device is within a vicinity of a household monitoring system based on detecting an identifier via a first radio frequency (RF) signal;

    when the identifier from the first RF signal is associated with the portable device, determining whether a second acoustic signal includes the identifier associated with the portable device;

    deactivating a media detection circuit of the portable device when the identifier is detected via both the first RF signal and the second acoustic signal; and

    activating the media detection circuit of the portable device when the identifier is detected from the first RF signal and the second acoustic signal is absent.

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