The Skreens app puts all of your HDMI signals on one display
 

Skreens showed off its newly-patented media device at CES Showstoppers. The self-titled gadget allows users to spread the video content from up to four HDMI inputs across a single display. The system utilizes a hardware component, shown above, that s...

http://www.engadget.com/2016/01/06/t...n-one-display/