Recognize small spacing LED display resolution: 2K,4K,8K

Time:2018-12-29 Views:48

When we understand the small-spacing LED screen, we often encounter the concepts of high-definition screen, 4K screen and so on. So what does 4K mean?

Is it more pixels than Ultra HD?

If 4K is four times 1080p, does that mean 4K is equal to 4320p?

The above three questions are answered in order: as the case may be;Sometimes;It isn‘t.

720P,1080P, etc., represent the "total number of rows of video pixels". For example, 720P represents 720 rows of pixels of video, while 1080P represents 1080 rows of pixels of video."P" in itself means "Progressive scanning," short for Progressive, relative to interlace.

2K,4K and so on represent the "total number of columns in video pixels". For example,4K represents the number of pixels in video with 4000 columns, specifically 3840 or 4096 columns.A 4K camera usually has 3840*2160 pixels or 4096*2160 pixels.

MP is the total number of pixels, that is, the result of multiplying the number of rows (P) and columns (K) of pixels (millions of pixels).For example, a 1080P camera is 1920 pixels multiplied by 1080 pixels to get the total number of pixels in 2MP.

1080p (or full hd)

Vertical resolution has been used to describe resolution in the past.So 1080p represents the vertical resolution.Almost all hd screens have a aspect ratio of 1.78:1 (16 x 9, also known as‘ widescreen ‘), which means the horizontal resolution is 1920 pixels (1920 x 1080).

This is another reason why people are confused about the concept of resolution. After all, in the past few decades, when we talked about TV resolution, we talked about vertical resolution, but now it suddenly means horizontal resolution -- 4K. People are confused.

So 1080p is not equal to 1K.Just as uhd is 4K, 1080p is 2K.In other words, 1920 x 1080 resolution is very close to the 2K standard described by DCI.Even so, most people don‘t call 1080p 2K, they call it 1080p or full hd.

720p has about half as many pixels as 1080p.

4 k

We‘ll start with the current top resolution 4K on the market, so we can talk about the basic principles to describe when solving most resolution puzzles.

Technically, ‘4K‘ means a horizontal resolution of 4096 pixels.It is the resolution proposed by the Digital Cinema Initiatives.The exact shape of the rectangular screen determines the aspect ratio of the movie, so the vertical resolution is not specified.

Therefore, technically speaking, "4K" is not ultra-high definition, with a resolution of 3840 * 2160.The difference in pixels between the two is only 13 percent, barely noticeable.Most people prefer the name 4K for ultra high definition.

8K is the same thing as 4K.If you‘re talking about screens, both horizontal and vertical pixels are twice as large as 4K: 7680 by 4320.However, the number of 8k video sources is not large. We are still far away from 8k becoming the mainstream, so we won‘t talk about it alone. Super hi-vision has a standard resolution of 7680 x 4320, with a total pixel of 33 million.In order to better support naked eye 3D display technology, Super hi-vision unified increase of frame rate to 120fps;The standard viewing distance and viewing Angle mode have also been greatly improved.

The figure shows the number of pixels per major resolution format.Of course, this is not an actual size, but a visual representation.

From maximum to minimum: 4k technology, the ratio of screen height to width is 1.78:1 (black part);UHD (white);2k technology, screen height to width ratio 1.78:1 (green part);Full hd 1080p (red part);720p (blue).

Of course, we almost never saw the word "2K" before 4K became common.It often refers to the "standard format."Digital movie projectors used in most theaters have a resolution of 2K (some have a lower resolution).Again, according to the DCI, it only specifies a horizontal resolution of 2048, not a vertical resolution.

Display resolution

Display resolution: WUXGA, WXGA, WXXXGA, WXCBGBSA and WXLADYGAGA

In the computer world, resolution is described by these confusing, shocking, unuser-friendly jumble of letters.Oh, that‘s not true. It‘s not shocking. After all, they‘re computers.

Basically, what we‘re most likely to see are FHD (1920 x 1080) and WUXGA (1920 x 1200).For the rest, you can prepare your own cheat sheet and copy it down for memory.Fortunately, we only come across these letter combinations when looking for a cheaper projector or computer monitor.

The following pictures can give you an intuitive feeling: