"So I do not expect 8K to be mainstream, if at all, till perhaps 2030 or so," Thong concluded.
NHK is funded by the Japanese government and fees paid by TV users in Japan. It has been researching high definition or what it calls Hi-Vision television since 1964, recording the Los Angeles Olympic Games in the format 20 years later.
It began research into Super Hi-Vision in 1995, and in 2012, the broadcaster produced six channels of live 8K video of the London Olympics for public viewing at sites in the U.K., the U.S., and in Japan. It said the 8K video made audiences feel as if they were at the Olympic events themselves.
Following the 2012 Games, the U.N. International Telecommunication Union approved 8K as a new high-resolution TV format. NHK has since shown 8K content at the Cannes Film Festival and the Tokyo International Film Festival.
It also plans to tape next month's Sochi Olympics in Super Hi-Vision and show the video at public viewing locations in Japan including Tokyo and Nagoya.
Looking ahead, NHK is slated to begin test satellite broadcasts in Super Hi-Vision for the Rio de Janeiro Olympics in 2016, and what is says will be "full broadcasts" in 2020, when Tokyo will host the summer Olympics.
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