METHODS AND APPARATUS TO ENFORCE A POWER OFF STATE OF AN AUDIENCE MEASUREMENT DEVICE DURING SHIPPING
First Claim
1. An audience measurement device, comprising:
- a housing;
a media detector in the housing to collect media exposure data;
a packaging sensor to receive an audio signal;
a packaging detector to generate a frequency spectrum of the detected audio signal, to determine an energy of a first frequency associated with the generated frequency spectrum, to determine an energy of a second frequency higher than the first frequency and associated with the generated frequency spectrum, to compare the difference between the energy of the first frequency and the second frequency to a threshold to determine whether the device is located within a package.
10 Assignments
0 Petitions
Accused Products
Abstract
Methods and apparatus to enforce a power off state of an audience measurement device during shipping of the device are disclosed herein. An example portable audience measurement device includes a housing, a media detector in the housing to collect media exposure data, and a packaging sensor to receive an audio signal. A packaging detector generates a frequency spectrum of the detected audio signal, determines an energy of a first frequency associated with the generated frequency spectrum, determines an energy of a second frequency higher than the first frequency and associated with the generated frequency spectrum, and compares the difference between the energy of the first frequency and the second frequency to a muffling threshold to determine whether the device is located within a package.
7 Citations
1 Claim
-
1. An audience measurement device, comprising:
-
a housing; a media detector in the housing to collect media exposure data; a packaging sensor to receive an audio signal; a packaging detector to generate a frequency spectrum of the detected audio signal, to determine an energy of a first frequency associated with the generated frequency spectrum, to determine an energy of a second frequency higher than the first frequency and associated with the generated frequency spectrum, to compare the difference between the energy of the first frequency and the second frequency to a threshold to determine whether the device is located within a package.
-
Specification