TV 4K did not spread the phone on the 8K this matter does not fly
In the TV market, countless manufacturers are not making a fuss about the screen resolution almost all the time. 2K, 4K to 8K, and even 10K are now moving out. A while ago, the author saw such a news. Tim Leland, vice president of product management at Qualcomm, said that the mobile phone is about to reach a resolution of 6K, 8K or even higher, and Qualcomm is also working hard to develop without stopping. After reading the author, my heart burst into a virtual one. The current TV market is still not popular 4K, and the largest mobile phone screen is also 6 or 7 inches, which is on the 8K you want to trouble?
The complexity of 8K technology is beyond people's imagination. The complexity of 8K technology is beyond the imagination of people. For the screen, small-size mobile phones do 4K, large-size television products like 8K or even 10K, in fact, technically not the hardest. However, the Super Hi-Vision (SHV) standard of 8K has a huge leap from color gamut, color depth, color gamut, gray scale, frame rate, standard viewing distance, viewing angle mode, and audio.
First of all, let's take a look at the main specifications of 8K:
Resolution 7,680×4,320 pixels (16:9) (approximately 33 million pixels per frame)
Color depth: 12-bit frame rate: 120 frames per second (progressive scan)
Audio: 22.2 channel bandwidth: UHF–8 MHz, 35~45 Mbit/s (RAI DVB-T2 test)
The main culprit for the huge storage of 8K video is the 22.2 channel audio system in the Super Hi-Vision-SHV standard. At present, the traditional two-channel system has gradually faded out. The current 5.1-channel audio processing system is the mainstream audio and video solution. Different channels are independent of each other, set around the entire sound field, and people feel that they are in the middle of the entire scene, giving people the feeling of being in a concert hall.
22. 2-channel audio technology places 10, 9 and 3 horns in the horizontal position of the listener's ear, above and below the listener's ear, and additionally has 2 subwoofers consisting of 36 small woofer units. The degree of fidelity in its sound almost reached the point where it came to the scene.
At the same time, in the surround sound pickup of 22.2 multi-channel audio, it is necessary to record the sound from the front, back, left, right, and up and down. Therefore, in the past, a large number of microphones must be deployed on the recording site for large-scale broadcast production.
Unless the eye is stuck to the screen, it is difficult to perceive. Playing high-resolution video on a large-sized device is very impressive, but the size of the phone is much smaller than that of the TV. The maximum size will not exceed 7 inches. Increasing the resolution to 4K or even 8K is regarded as unnecessary, because when the screen reaches a very high value, the human eye cannot distinguish it. Taking a 4K screen, you want to see the difference from 2K. Unless you put your eyes on the screen, it's hard to perceive the difference.
The higher density of pixels will cause more damage to the backlight of the LCD panel. The screen brightness will reach the same level, and the intensity of the backlight will be greater, resulting in a huge power consumption. At the same time, higher resolution for CPU computing power, GPU computing power is a huge test, of course, also need to consume more power, which will seriously affect the battery life, and battery life is one of the biggest pain points in the mobile phone.
In the end, I have to mention the source of the film. The 8K source is almost impossible to find on the Internet. Even if the major video content teams are vigorously developing at present, it is embarrassing that even the 4K source is very rare. For ordinary consumers, playing 4K video on their own network is a big problem. Not to mention the huge 8K source, even how to store is a big problem.
At present, 4K or even 8K high resolution is of little significance to mobile phones. To a greater extent, it is only for various manufacturers to show off their skills or to use marketing tools. In the TV market, 4K is currently in an outburst period. The exquisiteness of the screen has been improved. This is obvious to all. The 8K is the highest standard for super-sleeves, and it is true that major TV content providers have followed suit to different degrees. The Japanese NHK TV station has even been testing 8K radio and television for the Olympic Games to be held in Tokyo in 2020. In the future, large-size display products will surely develop in the direction of 8K.
Smart TV/box information can focus on smart TV information network sofa butler (http://), China's influential TV box and smart TV website, providing information, communication, TV boxes, smart TVs, smart TV software, etc. Answering questions.
8K on the phone is not reliable
At present, the market penetration rate of 4K TVs has reached more than 50%. Major manufacturers have already begun to rush to research and develop 8K TVs. Actually, not only TVs but also mobile phones, monitors and notebooks have begun to make a fuss about resolution in the past two years. At present, most high-end smart phones have begun to configure 2K or even 4K screens, and 8K has already been written on the agenda. However, higher and higher resolutions have no use in the end. Where are the difficulties and deficiencies? Up to 8K resolution TV
First of all we need to know what 8K resolution is. Many people certainly know or have heard of it, but most people's understanding of it may only be a vague aspect - more clear than 4K. In simple terms, 8K refers to a pixel size with a resolution of 7680×4320, ie, 7680 effective pixels in the horizontal direction, 4320 effective pixels in the longitudinal direction, and the most recent 4K, which is only a quarter of the 8K resolution. This shows that 8K can bring the ultimate picture quality experience, the screen is unmatched. NHK presents the world's first 8K camcorder
However, as far as television is concerned, a single 8K resolution is just an entry pass. It is actually very complicated to want to achieve a true 8K standard. Currently, there is no strict specification standard for 4K resolution in the industry. Fortunately, as early as 2012, the UN's International Telecommunication Union (ITU) passed the resolution of 7680x4320 recommended by Japanese NHK TV Station as the international 8K. Super Hi-Vision (SHV) standard. The complexity of 8K technology is beyond people's imagination. The complexity of 8K technology is beyond the imagination of people. For the screen, small-size mobile phones do 4K, large-size television products like 8K or even 10K, in fact, technically not the hardest. However, the Super Hi-Vision (SHV) standard of 8K has a huge leap from color gamut, color depth, color gamut, gray scale, frame rate, standard viewing distance, viewing angle mode, and audio.
First of all, let's take a look at the main specifications of 8K:
Resolution 7,680×4,320 pixels (16:9) (approximately 33 million pixels per frame)
Color depth: 12-bit frame rate: 120 frames per second (progressive scan)
Audio: 22.2 channel bandwidth: UHF–8 MHz, 35~45 Mbit/s (RAI DVB-T2 test)
Single-layer Blu-ray Disc storage capacity of 25GB
Which is the concept of 8K 120fps transmission specifications? The 8K resolution is approximately analogous to 33 million pixels, while 120fps refers to streaming video playback of 120 3,300,000-pixel images per second. This amount of data is very large. It is understood that even if the video in the 8K format is only one minute, it can occupy a full 194GB of space. The main culprit for the huge storage of 8K video is the 22.2 channel audio system in the Super Hi-Vision-SHV standard. At present, the traditional two-channel system has gradually faded out. The current 5.1-channel audio processing system is the mainstream audio and video solution. Different channels are independent of each other, set around the entire sound field, and people feel that they are in the middle of the entire scene, giving people the feeling of being in a concert hall.
22.2 channel schematic
The Super Hi-Vision - 22.2 channel sound in the SHV standard far behind any other channel system. The upper nine-channel, mid-layer 10-channel, and lower 3-channel three-layer loudspeakers, as well as the two-channel low-frequency audio (LFE) loudspeakers, can reproduce sounds propagating forward, backward, left, and up and down. 22. 2-channel audio technology places 10, 9 and 3 horns in the horizontal position of the listener's ear, above and below the listener's ear, and additionally has 2 subwoofers consisting of 36 small woofer units. The degree of fidelity in its sound almost reached the point where it came to the scene.
At the same time, in the surround sound pickup of 22.2 multi-channel audio, it is necessary to record the sound from the front, back, left, right, and up and down. Therefore, in the past, a large number of microphones must be deployed on the recording site for large-scale broadcast production.
Only large-scale sports events such as the Olympics are eligible for 8K transmission
Therefore, according to the current conditions of storage media, signal transmission methods, network bandwidth and speed, etc., 8K is not only realized by satellites, but also for large-scale sports events such as the World Cup and the Olympics. , can hardly form any scale of promotion. Unless the eye is stuck to the screen, it is difficult to perceive. Playing high-resolution video on a large-sized device is very impressive, but the size of the phone is much smaller than that of the TV. The maximum size will not exceed 7 inches. Increasing the resolution to 4K or even 8K is regarded as unnecessary, because when the screen reaches a very high value, the human eye cannot distinguish it. Taking a 4K screen, you want to see the difference from 2K. Unless you put your eyes on the screen, it's hard to perceive the difference.
Small-size screen 2K and 4K almost can not distinguish the difference
Jobs's retina screen refers to a PPI of more than 300, which is beyond the human eye's ability to discern. Although the current 5-inch 1080p PPI pixels have reached 440, the 5.5-inch inch 1080p screen also has 400 PPI, and most of the 2K screens exceed 500 PPI. Some people say that of course the higher the better, but the drawback of high-resolution drawbacks is that it has great requirements for mobile phone life. The higher density of pixels will cause more damage to the backlight of the LCD panel. The screen brightness will reach the same level, and the intensity of the backlight will be greater, resulting in a huge power consumption. At the same time, higher resolution for CPU computing power, GPU computing power is a huge test, of course, also need to consume more power, which will seriously affect the battery life, and battery life is one of the biggest pain points in the mobile phone.
In the end, I have to mention the source of the film. The 8K source is almost impossible to find on the Internet. Even if the major video content teams are vigorously developing at present, it is embarrassing that even the 4K source is very rare. For ordinary consumers, playing 4K video on their own network is a big problem. Not to mention the huge 8K source, even how to store is a big problem.
Future large-size display products will surely develop in the direction of 8K
Written at the end: At present, 4K or even 8K high resolution is of little significance to mobile phones. To a greater extent, it is only for various manufacturers to show off their skills or to use marketing tools. In the TV market, 4K is currently in an outburst period. The exquisiteness of the screen has been improved. This is obvious to all. The 8K is the highest standard for super-sleeves, and it is true that major TV content providers have followed suit to different degrees. The Japanese NHK TV station has even been testing 8K radio and television for the Olympic Games to be held in Tokyo in 2020. In the future, large-size display products will surely develop in the direction of 8K.
Smart TV/box information can focus on smart TV information network sofa butler (http://), China's influential TV box and smart TV website, providing information, communication, TV boxes, smart TVs, smart TV software, etc. Answering questions.
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