Ultra High Definition TV Coming Soon
Sky
Sports are already testing the next generation of television pictures,
variously known as Ultra High Definition TV or by the rather more geeky
moniker of ’4k’.
The
system under test creates a picture four times better than HD and on
the last day of August, Sky put together a world first: a football
ground to studio to TV set ‘end-to-end’ UHDTV test transmission.
In
collaboration with Sony, the West Ham v Stoke game was shot on four
UHDTV cameras and a special HD camera whose output was electronically
converted to UHDTV.
New
electronics converted each picture into four streams of data and then
sent those digital signals along fibre optic cables to a new, purpose
built Outside Broadcast truck in the Upton Park car park.
There,
match director Tony Mills was able to switch between them and add some
of the usual slow motion replays and scoreline and match-time graphics.
A
veteran of moves into both High Def and 3D match coverage Mr Mills
reckons he will need fewer cameras than the twenty of more deployed at a
big Sky Sports live game for HD coverage.
He
explains: “You can stay wider … Because the extra clarity of the
picture allows you to see the agony or ecstasy on players faces after a
goal or narrow miss … You need fewer really tight close up shots.”
What
will need more practice is keeping the new cameras in focus. The new
cameras are more sensitive and therefore can be used with lenses that
create a very narrow depth of field.
And that means keeping goalmouth action pin sharp can be a quite a challenge for operators in the half-way line gantry.
The
signal from West Ham was beamed back over a conventional satellite link
to the Sky Studios building in West London where it was reassembled
onto one 84″ display to me to enjoy the game along with other Sky
executives and engineers.
I
doubt if many people reading this have already bought such a super size
TV, but a helpful room design tip for when you do, you can sit a lot
closer to an UHDTV than you might an HD set, so much so it nearly fills
your field of view.
The
sofa really can be a lot closer to the TV! It’s as if you are in the
stands with the faithful, so clear are the pictures. Almost scarily so!
This
first generation UHDTV system definitely works, but I can’t give you
much guidance as to when it will become commercially available.
There
is a lot still to be done. A new compression standard, H265 (high
efficiency video coding ) has yet to be internationally agreed, as have
standards and protocols surrounding a new generation of HDMI
connections.
Both will need to be established before the first UHDTV Sky box can be built and distributed to customers.
There
are already signs of interest in the new TVs needed to exploit these
better quality signals. Samsung, LG, Panasonic and Sony all have sets
you can go out and buy today, if you don’t mind taking the risks and
paying the premium associated with being an early adopter.
This
autumn’s release of the two great rival games consoles, Microsoft’s
XBox One and Sony’s PS4 are both expected to be ’4k ready’.
What’s
not known, is how many of the games have been designed with the 3840
pixels (so nearly 4000 or 4k) by 2160 pixels screens in mind. A new
improved Blu-ray format may emerge for movie distribution to the home so
it’s only logical that broadcast TV will, in time, follow suit.
So
Ultra High Definition is coming, offering a warts-and-all view of that
bad tackle, the ferocious, looping free kick into the top corner of the
net and a new, far too detailed view of players spittle, flying towards
the turf.
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