Reblog: QuadHD, 4K and 2K. Everything you ever wanted to know about the future super-high definition (via Engadget) Many of you have the feeling that the imaging devices seem to have been stuck in the current standard of HD 1080p Full HD . The monitors that exceed these 1920 × 1080 pixels are few and expensive. Not to mention the above definition TVs with full HD, which are only a handful of prototypes to high prices.
Is there life beyond FullHD? The answer is yes. There are several standards that are the film and far exceeds the resolution of the TVs. Even now there are some home computers, all of them expensive, which are capable of displaying such images. Here we offer a look at the world of super-high definition , where it comes from, where is and what are the main obstacles to its implementation in a short period of time.
format film came
Basically, the 4K format, which is also known (erroneously) as QuadHD , coming of digital cinema. In fact, the cinema has now years filming some of their productions in this format then re-scaled to smaller sizes for distribution. The first film to be shot in 4K data format no less than 2005. This is "Serenity" by Joss Whedon , the science fiction film that put the finishing touch to the TV series 'Firefly'. It is also possible to find some 4K format digital remasters of classic productions .
Expressed in mega pixels, or 2304p format 4K has exactly 4,096 × 2,160 pixels , or approximately four times the pixel density than the current 1080. 2k is, as its name suggests, half (2,048 × 1,080 pixels ) and is another intermediate film format used, sometimes, in some productions and associated with 3D. iMax cinemas, for example, cast their images with two twins in 2K resolution projectors.
The 4K
home computers exist worldwide, and some equipment, counted on the fingers of one hand, capable of displaying images in 4K. Video projectors as JVC DLA-RS4000 , Receivers Audio / Video as the Onkyo TX-NR609 or TV super-wide format as the Sony TRIMASTER QuadHD 56-inch LCD are compatible 4K, but their prices are so exorbitant (JVC model cost around $ 50,000) that are reserved to the whims of consumers with many potential and a big house.
We said before the release was also known as 4K QuadHD. In reality, both concepts refer to different resolutions. Some manufacturers such as Sony and Sapphire have submitted teams whose resolution is slightly less than 4K. This definition, dubbed QuadHD or 2160p, is 3,840 × 2,160 pixels . Technical Problems
4K
The reason behind the downward rescaling of 4K could be something as simple as finding a support compatible. 4K format is compatible with HDMI connections 1.4 but, for now, not fit on a Blu-Ray , which greatly limit its arrival on the market.
Since there are many doubts about the Blu-Ray as a mainstream video format in the future, the solution may be in digital format hosted directly on hard drives. The problem here is distribution. In the absence of a physical format with hints of implementation majority, the most logical way to sell a 4K film distribution would be through streaming .
In fact,
Youtube supports 4K since July 2010, but the bandwidth required to move such an image quality is not exactly available to everyone, much less in Spain. Moreover, professional camcorders capable of recording 4K are also very expensive.
Red One manufactures a mechanical model that more affordable and more than $ 17,000. Future
medium to long term
opinions about when we will see the first television 4K formats vary widely. Some say they still have to spend 10 years to be a widespread standard. Other sources speak of optimistic as the year 2015 which will see the first shoots of this technology.
The answer unfortunately, still eludes us and we must solve many technical problems related to the format, and distribution. Not to mention the major television networks, which are only now beginning to adapt their infrastructures to 1080. The digital distribution of content such as Netflix, it would be easier, but only if the connections high-speed ADSL beginning to be mainstream.
We close these lines mentioning other projects that even go beyond 4K. The BBC
and Japanese network NHK emissions tests are done in a format called Super-Hi Vision
serving 4k images or
7K (7,680 × 4,320 4.320p pixels) . Only streaming video during the recording of the latter form requires a bandwidth of 90Gbps
. Store an hour of video in that capacity requires
10TB of space and send the results by a 24Gbps connection
would need. None of these figures seems within reach of our pockets in a short period of time but, as I said this operetta, "The advance science that is an outrage 'and maybe we got the surprise in the coming years.
Original:
http://www.xataka.com/hd/quadhd-4k-y-2k-todo-lo-que-siempre-quisiste-saber-sobre-la-futura-super-alta-definicion # c410811
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