After exploding 4K! What exactly is 8K technology?

I don't know if you still have the impression that during the Olympic Games in Rio de Janeiro, Brazil, Japan’s NHK had an 8K resolution live broadcast of the opening ceremony. Many people who have watched are immersed in the high-definition world brought by 8K resolution. Whether it is the real picture or the smooth frame rate, it makes people feel like being at the scene. Compared to the 4K resolution that is commonly seen at present, the 8K resolution is 4 times the number of pixels, and it can reach 4 times the 4K resolution and 16 times the 1080P. Such a huge number of people have made many people who really experienced 8K feel very amazed.

In August this year, Sharp launched the first consumer-grade 8K TV in the world, and officially opened the prelude to 8K globalization. Although the performance of the 4K is even stronger than that of the 4K, the public's understanding of the 8K is still relatively small. Today, follow the author, to make 8K and Sharp's 8K technology have a common understanding.

What does 8K mean?

Starting from 1080P, many enthusiasts who love HD quality are pursuing higher resolution. Whether it is 1080P to 2K, or 2K to 4K, the consumer's pursuit of picture quality has not yet reached its peak. In this context, the birth of 8K is precisely to advance TV definition to a higher level. At present, the digital video content that everyone sees is mainly based on Full HD, which is often referred to as 2K. The resolution of 2K content is 1920*1080, which is about 2 million pixels. In addition to 2K, 4K TVs have also begun to gain popularity. Its resolution is 3840*2160, with about 8 million pixels. In terms of resolution, 4K screen is 4 times that of 2K screen.

In the 8K resolution, the screen resolution can reach 7680*4320, which is about 33 million pixels. Judging from the sharpness effect, 8K is 4 times that of 4K and 16 times that of 2K. Watching at close range in 4K resolution, you can still see that the TV still has some tiny "crystals", but at 8K resolution, the picture will be completely displayed and the resolution is strong so that consumers can be near. Feel the charm of 8K in the distance.

At present, 8K TV supports the Super Hi-Vision (SHV) standard established in 2012 on the playback standard. The color depth is 12 bits, and the Rec. 2020 colorimetric method is adopted. Compared to 4K TVs, the maximum speed is 60 frames, and 8K standards are required. The frame rate needs to reach 120 frames/second and supports 22.2 channels. From the standard point of view, 8K technology is a further upgrade of television display technology.

What can 8K bring us?

At present, there is a certain technical standard for the content of 8K TVs, namely "Super-Hi-Vision". The digital standard was promoted by the Japan Broadcasting Association, the British Broadcasting Corporation, and Italian Radio and Television Corporation. Requirements for resolution, color depth, frame rate, audio and other aspects of 8K video have been improved compared to 4K video.

First of all, in terms of resolution, 8K feet with 4K resolution can provide better images. When using a 4K TV, although a relatively clear picture can be seen at a certain distance, when it is close to the TV, it is found that there are some tiny pixels on the picture. Watching at close range can easily affect the audience's sense of viewing. However, 8K TVs can display a picture with no display after boosting the number of pixels, leaving no trace of pixels. Therefore, the perspective of 8K TVs has also been improved. Compared with the 30° viewable angle of Full HD, 8K TVs can reach an astonishing 100°, which can almost satisfy the human 120° viewing angle and have a stronger sense of immersion. At the same time, with the increase in the number of pixels, TV's ability to analyze the details has also been enhanced. The small and invisible parts of the screen are undoubtedly demonstrated by the powerful display effect of 8K TV.

8K not only has advantages in terms of sharpness, but also has stronger color expression. According to the "SHV" standard, the required color depth for 8K TV and video is 12 Bit (4096). There may be some small partners who do not understand the meaning of color depth. This concept can also be understood as the number of colors. At present, we often see the TV color depth can reach 8 Bit, and for every 1 Bit increase, the screen color number can increase 8 times. 12-bit 8K TV, the number of colors can reach 4096, even including colors that do not exist in nature. Due to the further increase in the number of colors, the transition between each color will appear more natural, smooth, and closer to the real scene.

Everyone knows that the essence of video is actually a series of fast-displaying pictures. The more pictures there are, the more fluid the results will be. The current 4K video presented by 4K TV can basically achieve the effect of 60 frames per second, but this is not the limit that television can reach. The 8K format video will force a frame rate of 120 frames per second, and those pictures that have been displayed on the large screen due to the insufficient number of frames will be “fixed” in the 8K quality. With all its image quality advantages, 8K has become one of the most watched television technologies.

How far is the 8K era from us?

Although the 8K technology "looks" very good, 8K televisions are still not in our home, including reasons from various aspects. First of all, in terms of content, currently using 8K decoding source is very scarce, consumers may not immediately experience 8K excellent picture quality after purchasing 8K TV. Second, because there are 120 8K resolution pictures in one second of an 8K video, the memory occupied by the 8K video will inevitably be very large, and it is also a challenge to content transmission. In the end, 8K TVs are difficult to achieve at the technical level, and panel yields are low, which also causes higher prices.

Some time ago, Sharp launched the world’s first consumer-grade 8K TV. As a “new force” for the popularization of 8K TVs, Sharp also performed comprehensive 8K ecological chain supplements in various aspects. In terms of content, Sharp has cooperated with Japanese manufacturer ASTRODESIGN to launch 8K cameras, and will mass-produce 8K cameras with powerful capacity in 2018, laying the foundation for the outbreak of 8K content. In terms of transmission, with the advent of the 5G era, the transmission speed of video content will be a breakthrough, solving the problem of inconvenient transmission of 8K in size and making it easier for 8K TVs to be used in applications. On the panel side, Sharp's SDP panel makers continue to push the 10.5-generation line and are expected to start mass production of 8K panels next year. At present, Japan's NHK has decided to begin the official launch of the 8K field in 2018 and will launch the first global 8K channel. The progress on the content will also be reflected in the 8K hardware products. The 8K TV will also be fully developed and enter into our lives.

Whether for the consumer or the TV industry, the arrival of 8K is the inevitable result of technological innovation. In the dual drive of consumer upgrades and market upgrades, 8K will enter the home in the future, so that consumers can experience the charm 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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