Home > Knowledge > Content

3D, 4K, 120 frames

Jul 09, 2018

what? Only a few cinema can play it? Are you serious? Can other theaters be released?

Like everyone's 2K in mobile phone parameters, this is a screen resolution parameter. In digital cinema technology, it refers to the physical resolution of Texas Instruments' DMD display chip used in digital cinema. At present, the common resolution of digital movies is 2K, which is 2048*1080 pixels, and 4K is 4096*2160 pixels. In terms of the number of pixels, 4K is 4 times the current 2K resolution. At the same screen size, 4K resolution will greatly enhance the picture clarity.
3D technology is already familiar to the audience, that is, wearing 3D glasses to watch movies! Yes, theater 3D is the need to wear 3D glasses, whether it is shutter-type 3D glasses, or polarized 3D glasses, or Dolby 3D glasses, anyway, you must wear glasses. The 3D equipment that works with the 3D glasses is placed in the projector room and is not visible to the general audience. At present, almost all theaters are equipped with 3D cinemas to meet the screening requirements of general 3D movies, but it is not necessary to put Li Da’s [3D, 4K, 120 frames] "Billy Linn's midfield battle". !
[120 frames]
The frame is the smallest single image frame unit. What we usually call "frame" is Frames Per Second (abbreviated FPS), 24 frames is 24 frames per second, and 120 frames is naturally 120 frames per second. Since the film movie, movies have almost always been shown in a format of 24 frames per second. In the digital 3D movie screening, the projector plays 48 frames per second, including 24 frames for the left eye and 24 frames for the right eye. Then each frame is repeated for 3 times to solve the problem of flickering. This is what we often say 6 : 2 format. However, when only 24 frames per eye can be seen per second, some high-speed moving scenes can't be seen and blurred. Thus, the high frame rate technology of 48 frames and 60 frames appeared in the first two years, namely High Frames Ratio, referred to as HFR. Peter Jackson tried the speed of 48 frames per second in the 2012 Hobbit 1: Unexpected Journey, which doubled the speed. Lee’s revolutionary increase of the frame rate to 120 frames means that 240 frames per second are played, and 120 frames are obtained for each of the left and right eyes.

Why ordinary cinemas cann't be play [3D, 4K, 120 frames]!

First, you need a 4K digital projector, which is a digital projector with a physical resolution of 4096*2160 pixels. It also supports the screening of 120 frames of video.

Do you think this is ok? NO!
You also need a digital movie server that can play [3D, 4K, 120 frames]. Because of the improved resolution and frame rate, the speed of the digital server to process the code stream must also be followed. It is necessary to upgrade the server.
This is not enough, you have to upgrade the hard disk storage space of the server.

Can you put [3D, 4K, 120 frames] now? NO!
You also need a 3D system that supports [3D, 4K, 120 frames] screening. First of all, shutter-type 3D glasses may have problems with 120-frame movie screening because of the response speed problem. Dolby Laser 3D glasses, because there is no circuit, the ability to be compatible with 120-frame projections depends mainly on the digital projector. Polarized 3D glasses, although there is no circuit inside, the performance of a polarized 3D system working with polarized 3D glasses becomes a key point.
A polarized 3D system needs to support a 120-frame projection to have a sufficiently fast response speed. To meet the 4K resolution projection requirements, it is necessary to ensure that the image clarity does not deteriorate after passing through the 3D system.

At present, a problem commonly faced by high-efficiency 3D devices is the problem of image sharpness, which is mainly divided into two phenomena:
First: the image alignment deviation of multiple optical paths leads to unclear images
Second: the pixels of the image are blurred

cinema modulator.jpg

movie modulator.jpg

The HONY triple beam 3D system and single beam 3D system adopts frame rate adaptive technology, which can automatically detect the frame rate of the synchronization signal and adjust it to the corresponding state. At the same time, the optical modulator has a response speed of 400us, and the projection of [120 frames] 3D movies is perfectly fine.

HONY triple beam 3D System used image sharpening technology, so that you can see every pixel!

theater modulator.jpg

[3D, 4K, 120 frames] The frame version of "Billy Lynn's midfield battle" can be said to be a big leap in the history of film technology. The film is adapted from the best-selling novel in North America and tells the 19-year-old American soldier Billy Lynn. In the casualties of the Iraq war and comrades triumphant return and known as the American hero, through a midfield performance of the Thanksgiving Football Open, reveal the story of the soldiers on the battlefield real experience!