Jul 31, 2014 · If you were to try to pass a 4K signal through to an HDTV’s HDMI input, it would fail to sync up, and all you would see is a blank screen. That’s not to say that only true Ultra HD TVs can display 4K programs. A new line of Quattron+ sets from Sharp can accept up to 30-fps 4K signals via an HDMI 1.4 connection. But while Q+ sets can accept ...