4K and 8K UHDTV defined
Television progress continues. In the late 1990s, the ITU defined the parameter values for HDTV and the 720p families. At its meeting in May 2012, ITU-R Working party 6C, the same group, made the leap forward to the parameter values for the next two generations of television formats. These are the (current name) 4K and 8K UHDTV formats - Ultra High Definition Television. They are constructed as multiples of the 1080p1920 format in ITU-R Rec. 709. WP6C is chaired by David Wood from the EBU Technology and Development Department.
The new formats take advantage of future displays' greater colour range, have the option of 'constant luminance' encoding, and allow up to 120 pictures/second. Discussions to broadcast these systems currently centre on the to date largely unused 22GHz satellite broadcast band, but terrestrial broadcasting may eventually be possible.
Lieven Vermaele, EBU Director of Technology and Development commented: "Facilitating these superb pictures hasn't been made possible overnight - this represents over ten years of technical discussion and experiment. It has been a long journey - but we are delighted to have arrived at this point and pleased that the EBU has been able to make a contribution to broadcasting history."
In the video below David Wood explains what UHDTV is and why it's relevant.