Well, to be honest, this isn't really a new invention. Roku have one, and even round the desks at work we were discussing this sort of device about 2 years ago. Even down to powering from the USB port, whilst plugged in to the HDMI port. Not sure what he has patented - all pretty obvious stuff, although that never stopped Apple.
Principal Software Engineer at Raspberry Pi (Trading) Ltd.
Contrary to popular belief, humorous signatures are allowed. Here's an example...
“I own the world’s worst thesaurus. Not only is it awful, it’s awful."