Tied with rumors of cable TV coming to Xbox 360 , a new patent has revealed Microsoft's plans to limit that TV content based on a viewer's body size.

In a patent filing recently made public, Microsoft details a system that would identify the age of a person watching TV and limit certain channels depending on their determined age."The age group of a person in a field of view of the camera can be determined based on metrics of a 3-D body model," the filing reads. "The metrics are particularly indicative of age group. Based on the age group, a profile of the user is automatically updated with various parental control settings which control access to the electronic media device."According to the patent, channels could also "be replaced by substitute content when a person in a lower age group enters the field of view." This means that if a child entered the room during a show aimed at adults, the system could be set to automatically switch to something more appropriate.These features are only in the patent stage for now, and there's no guarantee that they'll be implemented. The filing took place in March of 2010 and is currently still awaiting approval from the US Patent and Trademark Office.Thanks, Geekwire