Tablets Have Rapidly Hit an Inflection Point

Within a two-year period, almost 20 percent of U.S. homes have become tablet owners, according to Nielsen Wire. That's fast. It is not uncommon for a consumer innovation to take as long as seven years to reach just 10 percent penetration.

Nielsen data still shows that entertainment video is the overwhelming choice of a screen used to consume video. Between 77 percent and 86 percent of all video consumed uses a standard TV screen. 

But tablets and smart phones both are heavily used while people are watching TV screens.