What is 4K (Ultra HD)? Next generation of resolution

4K displays is something you can get today or you should wait before buying? Here’s the things you should to know about 4K technology. But before start.. What is exactly 4K? Let’s continue with the difference between 1080p and 4K.


What’s the Difference Between 1080p and 4K?

A High Definition TV with 1080p resolution is composed of more than two million pixels (1920 x 1080, exact number is 2.073.600 :) ). But a 4K TV (Ultra High Definition) has over eight million pixels (3840 x 2160). Therefore, this new technology has around four times more resolution than 1080p displays and produces a clearer picture.

Ultra HD (4K) or Ultra High Definition (UHD) is the next big step in HDTV market. The Consumer Electronics Association (CEA) defines an Ultra HD television as one that displays at least 8 million active pixels, with a lower resolution boundary of at least 3,840 by 2,160. There are different varieties of 4K digital content ranging from 3,840 by 2,160 to 4,096 by 3,112, but the 3,840 by 2,160 resolution is the most common number we’ve seen.


This format was originally known as 4K, and while the CEA officially changed its title to Ultra HD (UHD for short), so the 4K label appears to be a sticker on televisions.

 4K Chart

How Is 4K Different Than 1080p?
Due to their variation, 4K generally is offering four times resolution than a standard 1080p HDTV. Nevertheless, 4K contents will still be compressed for home use. Because an uncompressed two-hour movie playing at 30 frames per second would require 55TB of storage just by itself. (Do you have a “50 TB hdd” in your home? :) )


4K video also needs a solid “1Gb-per-second” connection for reliable playback (unless it’s compressed in some way), which means that you will need fast hard drives and faster-than-today’s Internet and network connections. The HDMI connections on your current devices might not be enough to show 4K video at its regular standart; most entertainment devices and HDTVs in our homes are using HDMI ver. 1.4 which supports an Ultra HD picture at 30 fps. HDMI ver. 2.0, which is starting to appear on most 4K HDTVs, supports Ultra HD at 60 fps. Looks like it will take some time for the HDMI standard to become common enough for 4K technology. (Just like to process of transition from USB 1.1 to USB 2.0)


What Type of 4K HDTVs are in the Market Now?
The new generation of 4K HDTV displays are already in the market and with much lower prices than in last 2 year. In adddition to this, big  vendors like Samsung, Panasonic, Sony, and LG are coming to the market.


Is There Any 4K Content or Media We Can Watch on HDTV?
Of course there is! In 2012, the first 4K digital movie was “Timescapes”, a great 50-minute film about night sky. This movie was shot on a “RED Epic Camera” with a 4,096 x 2,304 pixel resolution. Also a 1080p copy is available on iTunes for $9.99, but the full 4K versions comes with a pice of $99 and $299 USB-stick version ($299 priced version is coming with the sharpest picture quality)

Sony has also released a “Mastered in 4K” series on Blu-ray (which uses up the rest of the room on the disc for an improved picture), so there are no other special features—but they’re still 1080p Blu-ray discs and without a 4K resolution.

As a rule, movie studios now are  delivering 4K movies to commercial theaters, but as you can see, none of these are available for home use or purchase for now.

Question: Do We Really Need 4K technology Now?
Answer is “Not yet” (Unless you have cash to spend!). 4K technology will be appropriate for consumers in the next several years.

But 4K has  much chance than 1080p of becoming mainstream, because it doesn’t need special glasses etc.. and some movie studios are already shooting their movies in 4K format.

For more techical information, I suggest you to visit this link: http://en.wikipedia.org/wiki/4K_resolution

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