The four-day International Telecommunications Union (ITU) 2016 World Telecommunication Exhibition kicked off in Bangkok, Thailand on the 14th. The "Chinese Legion" is a three-operator camp consisting of China Telecom, China Unicom and China Mobile. In addition to national participation, international companies exhibiting or sponsoring independently include Huawei, ZTE, Cisco, Intel, Nokia, Ericsson, and NTT Group. Wait.
ITU Telecom World was founded by the International Telecommunication Union in 1971 and has been successfully held for 16 sessions. According to reports, this is one of the world's highest-profile and largest information and communication exhibitions. It is also authoritative, large-scale and extensive. Represented by the industry as the Olympics in the field of information, communication and technology (ICT).
At this year's show, many SMEs from all over the world brought simulation products related to 5G. According to Yang Guangwang, Secretary General of the International Telecommunication Union, Zhao Houlin revealed that in the telecommunications market, 3G, 4G, 5G, all these advanced communication standards are uniformly formulated by ITU. The 3G standard was issued in 2002, and the 4G standard was released in 2012. Although the Chinese official has already released, 5G is commercially available in China in 2020, but the worldwide 5G standard will be released in 2019.
Zhao Houlin said: "Now the 5G road has been basically fixed. I hope to test the main manufacturers that provide technical services and equipment for 5G in the future. This will enable the standardization organizations to feel that this standard will stand in the market in the future. Everyone can accept it. In this case, it will take some time. We are still asking the major manufacturers to continue to provide product technical requirements in this regard, and hope that they will provide some test verification reports, so that everyone has a relatively unified understanding. â€
In an interview, Zhao Houlin said that in the past, like other communication exhibitions in the world, their main energy is only focused on cutting-edge technology. However, starting in 2014, they will shift their focus. This year they hope to pay attention to global small and medium-sized enterprises. The role of enterprises in the telecommunications market. Zhao Houlin said: "In order for SMEs to have better innovation and development, to better serve SMEs in the telecom industry, and to provide better development opportunities for SMEs and local economic and social development, we think From the past, the platform has only been provided to the international equipment manufacturers and operators, and has become a communication platform for SMEs to get in touch or to have better development in this market."
In addition to 5G, another highlight of this year's show is related to China's Belt and Road strategy. Many countries have brought their front-end technology products related to communications - VR, cloud computing, Internet of Things and so on. Most of these technology products are based on the Internet.
Signal
Response time refers to the response speed of the Liquid Crystal Display to the input signal, that is, the response time of the liquid crystal from dark to bright or from bright to dark (the time for the brightness from 10%-->90% or 90%-->10%) , Usually in milliseconds (ms). To make this clear, we have to start with the human eye's perception of dynamic images. There is a phenomenon of "visual residue" in the human eye, and the high-speed motion picture will form a short-term impression in the human brain. Animations, movies, etc. to the latest games have applied the principle of visual residue, allowing a series of gradual images to be displayed in rapid succession in front of people's eyes to form dynamic images. The acceptable display speed of the picture is generally 24 frames per second, which is the origin of the movie playback speed of 24 frames per second. If the display speed is lower than this standard, people will obviously feel the picture pause and discomfort. Calculated according to this index, the display time of each picture needs to be less than 40ms. In this way, for the liquid crystal display, the response time of 40ms becomes a hurdle, and the display above 40ms will have obvious picture flicker, which makes people feel dizzy. If you want the image screen to reach the level of non-flicker, it is best to achieve a speed of 60 frames per second.
I used a very simple formula to calculate the number of frames per second under the corresponding response time as follows:
Response time 30ms=1/0.030=approximately 33 frames per second
Response time 25ms=1/0.025=approximately 40 frames per second
Response time 16ms=1/0.016=approximately 63 frames per second
Response time 12ms=1/0.012=approximately 83 frames of pictures displayed per second
Response time 8ms=1/0.008=approximately 125 frames per second
Response time 4ms=1/0.004=approximately 250 frames per second
Response time 3ms=1/0.003=approximately display 333 frames per second
Response time 2ms=1/0.002=approximately 500 frames per second
Response time 1ms=1/0.001=approximately 1000 frames per second
Tip: Through the above content, we understand the relationship between response time and the number of frames. From this, the response time is as short as possible. At that time, when the LCD market first started, the lowest acceptable range of response time was 35ms, mainly products represented by EIZO. Later, BenQ's FP series came out to 25ms. From 33 to 40 frames, it was basically undetectable, and it was really quality. The change is 16ms, displaying 63 frames per second to meet the requirements of movies and general games, so 16ms is not obsolete. With the improvement of panel technology, BenQ and ViewSonic started a speed battle. ViewSonic started from 8ms to 4ms. Released to 1ms, it can be said that 1ms is the final controversy of LCD speed. For game enthusiasts, 1ms faster means that CS's marksmanship will be more accurate, at least psychologically, such customers should recommend the VX series of monitors. But everyone should pay attention to the grayscale response when selling. The text difference in full-color response may sometimes mean the same thing as gray-scale 8ms and full-color 5ms. It is the same as when we sold CRTs before, we said that the dot pitch is .28, LG just I have to say that he is .21, but the horizontal dot pitch is ignored. In fact, the two are talking about the same thing. LG has come up with a sharpness of 1600:1. This is also a conceptual hype. Everyone uses the basic screen. There are only a few companies on the list, and how can only the LG family achieve 1600:1, and everyone stays at the level of 450:1? When it comes to consumers, the meaning of sharpness and contrast is obvious, just like AMD's PR value, which has no real meaning.
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