Do the terms 4K and Ultra HD mean the same thing? If so, why are two different terminologies in use?
Since 2013, 4K resolution has been made available in high-end TVs but for the moment it is accessible only through satellite channels or through special media-players, with a built-in hard disk or solid-state-disk, where 4K content may be preloaded at factory time and more content can be downloaded from suitable network or cloud servers before…