Traditional Culture Encyclopedia - Traditional stories - What's the difference between ultra-clear, high-definition and standard definition?
What's the difference between ultra-clear, high-definition and standard definition?
1, SD: below 480P (480 TV line, progressive scanning), such as VCD player, old DVD player and domestic digital TV.
2. HD: 720P or 1080 I(720 TV line progressive scanning, 1080 TV line interlaced scanning), the regulations of different countries are inconsistent, while the national standard of our country is 720P HD, such as: HD DVD player, HD digital streaming media player, and US-Japan digital TV (under implementation).
3. Ultra-clear: 1080 p( 1080 TV line by line scanning). There are two internationally recognized HD standards: the vertical resolution of video exceeds 720p or1080 p; The aspect ratio of video is 16: 9. Such as: HD DVD player, HD digital streaming player, satellite TV, Blu-ray DVD player, HD-DVD player.
Note: Ultra-clear and high-definition are not closely related, either SD Advanced Edition or HD, but HD Advanced Edition is Ultra-clear. So some people mistakenly think that what is clearer than high-definition video is ultra-clear, which is wrong. Although the definition of ultra-clear is indeed higher than that of some high-definition videos, ultra-clear is actually a general term for high definition and standard definition. Simply put, there are only two kinds of image quality: standard definition and high definition.
Extended data:
Application significance of different resolutions: Resolution parameters are very important for display devices. In the case of the same screen size, the higher the resolution means that the screen is more delicate, that is, the details of the screen can be presented more clearly, such as images and characters, which can greatly increase the user's visual experience. For example, the 4K TV, which is very popular in recent years, looks very delicate and clear, giving people a great visual experience.
In addition, for desktop monitors, higher resolution also means that more content can be displayed on one screen, for example, more web pages, WORD documents, EXCEL tables and software interfaces can be displayed side by side at the same time, especially big data software such as GIS and SCADA, which are often used in monitoring and commanding dispatching industries.
After the resolution of signal source is defined, adaptive signal processing equipment can be selected according to different resolutions. For signal sources with high resolution, such as high definition and 4K, when selecting signal processing equipment, it is particularly important to consider whether the bandwidth occupied during transmission is compressed and whether the original image quality can be perfectly restored after compression, which is particularly important in engineering applications.
Baidu Encyclopedia-Standard Definition
Baidu Encyclopedia-HD (HD video)
Baidu Encyclopedia-Super Clear
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