A lesson for the old: blue and millet 4K who ox?

Old Shen (Chen) just took office, the first fire burned up: every day to send a millet TV. And said the millet TV is "4K Super HD, is said to be 4 times times the Blue disc DVD 27 times times."

I don't know about TV technology, but I know some DVDs. Looking at the old Shen such unprofessional expression, I really want to tell him about the mystery. What is "4 times Times", "27 times times"? Resolution？ Quality？ or something? Say it clearly. Otherwise it is misleading the consumer.

According to the Millet official website data, Millet TV 2 screen resolution of 3840*2160, a total of 8.29 million pixels. This one, not 4K.

This standard, itself called Ultra HD, means Super HD. It's not really a 4K standard, and 4K is not a standard.

Samsung, Sony and domestic brands, in order to promote their consumers than HD (1080p) screen resolution, they played a 4K version. This is a means of commercial propaganda.

The real 4K, whose resolution is 4096*2160, is the industrial standard established by digital cinema initiatives. That is, the screen length has at least 4,000 pixel points.

OK, look at the Blu-ray DVD again. Blu-ray quality resolution of 1920*1080, a total of 2.07 million pixels. So, the old sinking so-called "4 times times", refers to the number of pixels. Ordinary DVD screen, in accordance with the NTSC format, for 720*480=34.56 million pixels.

829 divided by 34.56, rounded clearly is 24, where is 27 times times? According to the DVD's other PAL format (720*576) is not 27 times times. Well, this multiple problem is not important.

The next thing to say is your 4K and Blu-ray than who is the problem. To illustrate this, there is no need for evaluation. Theoretical calculations can be drawn. Watching movies, large screen resolution will definitely improve the perception, but only the resolution is not enough. You have to make sure that the picture is good.

Let me give you a very simple example, that is the difference between the MKV format and the RMVB format. The resolution of the MKV format is 1024x768, while RMVB films are generally 1280*720. Looks like the latter is "clearer"? Not really.

If you often patronize a lot of pirated movie downloads, you will find that MKV format movies are not as high as RMVB, but the volume of files is usually large. To be blunt, the rate is higher, the amount of information stored. Therefore each frame picture expresses the information quantity to be many, the picture detail is quite rich. Will not appear like RMVB, such as drop frame, mosaic, jelly effect and so on.

The rate of the blue disc is generally around 30mb/s, that is, the amount of data flowing over 30 MB per second. Without saying anything else, how much can you load at home when you watch American dramas online? How much is the maximum download speed when you use the Thunder? Don't say much.

So you can't just look at the resolution, but also see the code rate. Moreover, the current online 4K chip source is less, the entire 4K screen is ready for the future? In order to ensure that the picture is smooth, viewing resolution for 3840*2160 picture, the quality can be good where to go?

So, the so-called 4K TV so shocking picture, is to have enough rate for the premise. You put him on the internet to play a video to see, do not broadcast the TV store in the pre-recorded sample.

I installed the broadband for 50M, download speed in the 3-4m/s. According to 2.5m calculation, processing 5M of data per second, this 5M also includes 24 frames per frame 3840*2160 picture, you say each frame picture can be compared to blue light? I'm not good at maths.

Now it seems that the use of these 4K TV, to play "Call of Duty" is similar. Otherwise, is to own 4K source, handcuffs on the hard disk to see on TV. But aren't you internet TV? Look on the Internet.

The question is, where are you going to get a 4K source? Do you know how big a real 4K movie file is?