Can your home broadband afford 4K TV? A picture makes you aware


If 4K technology is still in its infancy in the first two years, then this year can be regarded as its outbreak period. Almost all home appliance giants now bring their higher-end, more affordable 4K TV devices. In fact, from a single device, there is no use of eggs, after all, really enjoy the 4K treatment also requires film source and network broadband support. The source of the film is not something we can determine. We can expect more 4K sources to watch. Fortunately, 4K sources are on the way and we should not let us wait too long.

In addition, broadband is a factor that we can control. Then the question arises. Do you know how much bandwidth you need to watch 4K TV programs at a minimum? Can your home broadband afford 4K TV? However, you don't know, right? It doesn't matter, Xiaobian gives everyone a picture, so that you know how much bandwidth is needed for 4K TVs.


The optimal frame rate for viewing 4K set by the ITU ITU is 120 Hz, and the minimum color coding is 10-bit, otherwise, it cannot be regarded as a true 4K. Whether it is fixed network or wireless, it can not meet the requirements of 4K. As a communications equipment supplier, Huawei defines 4K internally as three levels: entry level 4K, carrier level 4K, and ultimate 4K.

Among them, the carrier-class 4K experience standard can meet the frame rate of 60Hz, 10-bit color depth, and the access bandwidth requirement is above 50M. According to the plan, the realization of this goal is expected to be large-scale commercial use until next year. There is also a major premise that there is a corresponding operator-level 4K program that can be played. As of now, there are few mature domestic manufacturers that can produce 4K videos.

As for the ultimate 4K, that is, to meet the ITU 120Hz, 12bit screen experience, the fastest to 2017. Of course, perhaps with the maturity of the 4K codec technology, carrier-grade 4K will gradually reduce its code rate and bandwidth requirements.

If friends can't wait to see 4K TV programs right now, the only option left is 4K@30 frames, and the network bandwidth is as low as 30M, otherwise it will be difficult to ensure the stability and clarity of the viewing. In terms of network bandwidth today, the speed in most parts of the country still falls short of this goal. Even if this index is met, there may not be an adequate 4K program in the local area. According to the author's understanding, the country has only poles so far. A few regions have launched 4K on-demand services, including Jinan, Dalian, Shanghai, Shenzhen, and Chongqing.



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