While 4K, or Ultra High Definition, TVs have been around for some time, they were
prominently featured at each manufacturer's booth as a technology ready for high-end
consumers. At a film technology panel, studio CTO’s spoke of the superiority of the 4K
picture versus HD. Film studios have long been capturing films in 4K for the superior
resolution, later editing it to the correct format for distribution. While these 84-110” sets
and the picture quality are amazing, we are left concerned about network capacity.
Where the content industry and consumers see better picture quality, we see continued
network congestion. A 4K TV signal carries 4x the data of an HD signal, and current
networks could not carry them in significant numbers. We estimate HD is transmitted a
6-8Mbps; a 4K TV signal at 25-30Mbps represents half the average network capacity of
an existing AT&T U-Verse household. For a cable company, a single 6MHz channel can
carry 8-10 SH channels or 2-4 HD channels; the same 6MHz allows for just one 4K TV
channel.
Tuesday, January 15, 2013
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