CIMM DEFINITION: The process and action of collecting data from the Set-Top Box. Varies by system. Some pull data on a second-by-second basis; others during an interval of time (such as quarter hour intervals) and others pull at activity points like channel change.
NOTE – “While switched digital video and people meters provide access to some data (e.g., channel change) continuously, or at frequent intervals, some data exists only in the Set-Top Box (e.g., keystream, interactive, explicit interest), and bandwidth limitations of the back channel (a.k.a. out-of-band return path) severely restrict when and how frequently this data may be pulled from STBs. Common practice is to schedule overnight transmission of such data, when viewership is low and available backchannel bandwidth increases. This is especially important for census data.” (Source: FourthWall Media)
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