What is an 8K TV
8K TV, as the name suggests, is a resolution that can reach 7680*4320, and For TVs supported by corresponding decoding chips, 8K TVs are 16 times the resolution of full HD TVs and 4 times that of 4K TVs.
But unlike 4K TVs that can play full HD pictures, if you put a full HD TV on an 8K TV for playback, you need a pixel display before The resulting picture needs to be displayed with 16 pixels on an 8K resolution display, so the fineness of the picture will be completely lost.
8kTV and 4KDifference
1. The difference in resolution
The resolution of 4K is 3840×2160 pixels, while the resolution of 8K reaches 7680×4320 pixels, which is 4 times that of 4K TVs. If you use an 8K TV to watch a Blu-ray blockbuster, the picture can only occupy 1/16 of the screen.
2. Differences in refresh rate
The refresh rate of 8K TV screens is generally 120Hz, while the refresh rate of 4K TV screens is generally below 60Hz.
3. Differences in network requirements
8K content transmission requires at least 500Mbps, while 4K requires only 50Mbps or even lower.
4. Different horizontal viewing angles
The optimal viewing level for 8K TVs can reach 100°, while Full HD TVs and 4K TVs only have 55° . However, whether it is 4K TV or 8K TV, it belongs to the next generation of TV video technology.
5. Different display effects
The 4K picture is clear, the small parts of the characters’ expressions can be seen clearly, and the pictures with transparent color effects such as smoke and dust Realistic too, but 8K TVs feel immersive.
8kWhat is the dilemma of TV
With any new technology, there is an accepted and adapted In the process, although the current 8K TV technology is mature, the entire industry chain is not perfect, the supporting hardware technology is not up to standard, and most of them are still in the laboratory or testing stage. Up-and-coming manufacturers are also crossing the river by feeling the stones, mainly because of the following problems.
1. The problem of film source
As a TV product, the primary task is to watch TV programs. What is the difference between TV without program source and ordinary TV. 8K TV has a big problem in terms of film source. 8K video technology has a resolution of 33 million pixels, while most full-frame SLR cameras on the market currently have around 24 million pixels. That is to say, even if it is a photo, the photo size of most SLR cameras cannot meet the requirements of 8K video technology, let alone the video screen. The serious shortage of photographic equipment will naturally lead to a serious shortage of 8K video technology content.
2. Expensive
New products are often priced very high. Although Sharp has not announced the price of its first 8K TV, it will at least not be less than 200,000. The 8k TV sold by JVC, its worth of 1.6 million yuan will scare away many consumers. In other words, even if you can afford an 8k TV, you may not be able to afford a house that can hold a TV the size of a wall.
3. The video storage space is too large
In the process of capturing 8K video with the JVC Super Hi-Vision camera video, it is found that it is only 1 minute long The 8K format video requires 194GB of storage space. Such a huge volume, whether it is a Blu-ray disc or a TV signal, is a very big challenge.
4. Limitation of transmission distance
For TV signals, only when the transmission distance reaches a certain level can it be commercialized. At this point Yes, Japan is indeed much more advanced than us. Japan’s NHK TV station has successfully transmitted 8K TV signals to a receiving station 27 kilometers away through air signals, which is basically the same as the current transmission distance of 1080p TV signals. This means that 8K TV signals have met commercial needs, and Japan announced that it will officially implement 8K digital TV signals in 2020.
As long as the technology, mass production and cost issues of the overall industry chain are resolved, 8K TVs are expected to “fly into ordinary people’s homes”. Maybe one day, watching movies will no longer need to go to the cinema.
8k TV prices
Global TV brands such as Samsung, Sharp, Sony, LG, etc. have launched 8K products or are actively planning to launch them. In the upstream panel industry, LG Display, Samsung Display, Sharp, etc. Panel manufacturing is taking the lead, and BOE (BOE), CSOT, AUO, and Innolux are also actively developing mass-produced 8K products.
New technologies and products are always expensive, and it is a long process to wait for the price to drop after maturing, and now the price of 8K TVs is beyond the reach of most consumers. Referring to the Z8H released by Sony on March 31, 2020, the 75-inch price is 49,999 yuan, and other brands of 8K TVs on the market also start at 10,000 yuan.
8k TV standard
1. Resolution
The number of pixels is not less than 33 million, and there are many horizontal pixels in the 16:9 aspect ratio less than 7680 pixels, and no less than 4320 pixels in the vertical direction.
2. Input
Provide at least one HDMI interface that supports 7680×4320 resolution, while ensuring the color depth is 10bit, supporting 24P, 30P and 60P Three frame rates, in line with the HDR transfer function rules stipulated by ITU-R BT.2100, and provide HDCP V2.2 or the same level of protection standard.
3. Up-conversion (scale)
Can interpolate SD, HD and 4K video to 8K and display it in 8K resolution.
4, color depth
It can display 10bit 8K photos.
