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NHK is progressing with the development of equipment to enable the
broadcast of 8K Ultra High Definition television,
with trial broadcasts to begin in Japan in 2016.
The camera head, co-developed with Astrodesign,
has been made much lighter and more compact.
They achieved this by packaging a 33-megapixel image sensor
and its drive circuits in a housing just 10 cm square,
with a total weight of around 2kg.
NHK, in collaboration with Mitsubishi Electric,
has also developed the world's first HEVC/H.265
real-time encoder for 8k Ultra HD.
HEVC is the latest video encoding system,
which became an international standard this year.
It has four times the compression efficiency of MPEG2,
widely used in current digital HD broadcasting.
Information about the speed and direction of moving objects is shared
across several segments,
which minimizes loss of picture quality where segments join.
Currently, the encoding is done at 60 Hz,
but NHK plans to work on 120 Hz real-time
encoding,
which is a part of the Ultra HD specifications.
DigInfo News