With the development of television, its resolution is also getting higher and higher, 4K TV has not yet been popularized, 8K TV has turned out, then what exactly does the resolution of TV distinguish, what is SD? What is HD? What is Ultra HD? The following explains the standard explanation in detail.
What is HD?
The physical resolution of 720P or more is defined as high definition (English expression High Definition, referred to as HD). On the HD standard, there are two internationally recognized: video vertical resolution exceeds 720P or 1080P; video aspect ratio of 16:9.
What is Full HD?
The so-called full HD (FULL HD) refers to the physical resolution up to 19201080 display (including 1080i and 1080P), where i (interlace) refers to interlaced scanning; P (Progressive) represents progressive scan. There is a big difference between the two in the precision of the picture. The 1080P picture quality is better than 1080i. The corresponding bar 720 is called standard HD. Obviously, because the data information is more abundant in the process of transmission, 1080 has more advantages in resolution, especially in the large-screen TV, 1080 can ensure a clearer picture quality.
What is ultra clear?
At the same time, support for HD and SD are collectively referred to as super clear and English is called "Super Definition". Note: Ultra-clear and high-definition are not much connected, and it is not that the advanced version of SD is HD, and the advanced version of HD is ultra-clear. Therefore, some people mistakenly believe that HD video is clearer than ultra-clear. This is wrong. Although ultra-clear resolution is indeed higher than high-definition video, in fact, ultra-clear is only the collective name of HD and SD. In simple terms, only standard definition and high-definition two picture quality.
What is SD?
The so-called standard definition, English "Standard Definition" is a video format with a physical resolution below 720P. 720P refers to the food's vertical resolution of 720 lines of progressive scanning. Specifically, it refers to "standard definition" video formats such as VCD, DVD, and TV programs with a resolution of about 400 lines, ie, standard definition.
What is Ultra HD?
The latest standard information from the International Telecommunication Union shows the official name of "4k resolution (38402160 pixels)" as "Ultra HD Ultra HD". At the same time this name also applies to "8K resolution (76804320 pixels)." At present, the technical resolution of HDTV is 1920×1080.
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