I am seeking to understand how devices are recognised and shown within Adobe as a Dimension. The reason I ask is that I have seen a considerable rise in "TV" within Visits to some pages and feel that Adobe may be picking up an alternate device as TV when is actually another i.e. mobile/tablet. Any help that can aid my understanding of how Adobe recognises devices/any breakdown of what sits within each (Mobile Device/Mobile Device Type) would be greatly appreciated.
Suneesh is correct. Adobe partners with DeviceAtlas to classify user agent strings. Since new devices are published all the time, stuff needs temporary buckets until they are properly classified. Typically Adobe updates their device lookups during each maintenance release.