Methods and apparatus to export tuning data collected in a receiving device

摘要

Methods and apparatus to export tuning data collected in a receiving device are disclosed. An example method of collecting audience measurement data comprises collecting tuning data within a receiving device, and modulating an LED associated with the receiving device to export the collected tuning data from the receiving device.

主权项

1. An audience measurement system comprising:
a receiving device having a visible indicator, the receiving device to collect tuning data and to modulate the visible indicator between an on-state and an off-state at a rate above the sensitivity of the human eye to export the collected tuning data; and a sensor to receive the tuning data exported from the receiving device; wherein the sensor includes:
a photosensor to monitor the visible indicator; anda second visible indicator to display at least a low frequency component of a signal output by the visible indicator.