Feeds
90%
Sony KD-84X9005 84in 4K LED TV

Sony KD-84X9005 84in ultra-HD TV review

4K picture, £25k pricetag

  • alert
  • submit to reddit

Top three mobile application threats

Breaking code

HEVC is so powerfully economic, NHK is planning to use it for 8K TV transmissions at the turn of the decade. HEVC will almost certainly be the codec behind the first Astra 4K test satellite channel – due for launch in 2015 or thereabouts – and it’ll probably fuel the next iteration of Blu-ray too.

Sony KD-84X9005 84in 4K LED TV

Check out that resolution notification

Until then though, all eyes remain on how well the KD-84X9005 handles today’s 2K material. Processing grunt for this task is provided by proprietary silicon. Sony’s new XCA8-4K chip partners the duo which currently make up the brand’s X-Reality PRO processing team. Just as they do on regular Full HD BRAVIAs, this pair tackle noise reduction and Full HD upscaling, while the newbie is given the job of deciding how best to upscale to 4K, using a Pattern Analysis algorithm database.

Sony KD-84X9005 84in 4K LED TV

Sony image information revealed by Fast Fourier transform – click for a larger image

Crucially this 4K processor is able to detect and exploit any residual high frequency information lingering in a Full HD signal, be it from Blu-ray or HD TV broadcast. The resulting interpolation can give results uncannily similar to native 4K. This high frequency bunce is found in material originally shot on 4K cameras, or content scanned at 4K resolution. Sony engineers tell me there’s a lot of it about.

Sony KD-84X9005 84in 4K LED TV

Picture perfect: Stills never looked better on an 84in panel

Marvel Avengers Assemble is just one of many modern movies on BD to benefit. On this ultra HD screen, Tony Stark and pals have extraordinary depth and visual sparkle. Even a dowdy plodder of a flock like The Tourist has extra eye-candy to reveal. Flicking between processed and unprocessed feeds reveals clear benefits. Textures and tones definitely appear more realistic.

Sony KD-84X9005 84in 4K LED TV

4K screen of a digital still image – click for a close-up

If there’s no residual high frequency information in the signal, perhaps because the film was shot or scanned at 2K, or its origins are altogether more modest, the XCA8-4K chip doesn’t attempt to do much of anything. The image is remapped to 3840 x 2160, but ultimately looks much the same as it does on a Full HD display.

Combat fraud and increase customer satisfaction

Next page: Passive viewing

More from The Register

next story
Feast your PUNY eyes on highest resolution phone display EVER
Too much pixel dust for your strained eyeballs to handle
Samsung Galaxy S5 fingerprint scanner hacked in just 4 DAYS
Sammy's newbie cooked slower than iPhone, also costs more to build
Microsoft lobs pre-release Windows Phone 8.1 at devs who dare
App makers can load it before anyone else, but if they do they're stuck with it
Report: Apple seeking to raise iPhone 6 price by a HUNDRED BUCKS
'Well, that 5c experiment didn't go so well – let's try the other direction'
Rounded corners? Pah! Amazon's '3D phone has eye-tracking tech'
Now THAT'S what we call a proper new feature
Zucker punched: Google gobbles Facebook-wooed Titan Aerospace
Up, up and away in my beautiful balloon flying broadband-bot
Leaked pics show EMBIGGENED iPhone 6 screen
Fat-fingered fanbois rejoice over Chinternet snaps
US mobile firms cave on kill switch, agree to install anti-theft code
Slow and kludgy rollout will protect corporate profits
AMD unveils Godzilla's graphics card – 'the world's fastest, period'
The Radeon R9 295X2: Water-cooled, 5,632 stream processors, 11.5TFLOPS
Sony battery recall as VAIO goes out with a bang, not a whimper
The perils of having Panasonic as a partner
prev story

Whitepapers

Designing a defence for mobile apps
In this whitepaper learn the various considerations for defending mobile applications; from the mobile application architecture itself to the myriad testing technologies needed to properly assess mobile applications risk.
3 Big data security analytics techniques
Applying these Big Data security analytics techniques can help you make your business safer by detecting attacks early, before significant damage is done.
Five 3D headsets to be won!
We were so impressed by the Durovis Dive headset we’ve asked the company to give some away to Reg readers.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Securing web applications made simple and scalable
In this whitepaper learn how automated security testing can provide a simple and scalable way to protect your web applications.