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• #13751 Vhiktor nagyúr Vhiktor #13749

  Új Válasz 2022-10-29 17:27:50 #13751

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  válasz Vhiktor #13749 üzenetére

  First, the screen body is reduced. For example, the TV is equipped with only a 4K 60Hz screen, and through interpolation/DLG/HSR and other technologies, the approximate 120Hz effect is achieved by interpolating/algorithm.

  The application of interpolation technology on TV is not uncommon, it can insert a black frame according to the relationship between two adjacent frames, improve the video frame rate, and make the picture smoother. However, this technology will affect the brightness of the picture to a certain extent.

  DLG is also a technology used in pseudo-4K 120Hz TVs. The refresh rate refers to the number of times the electron beam repeatedly scans the image on the screen, the higher the refresh rate, the better the picture stability of the image, and the higher the picture fluency. Pixels are arranged in rows on the display panel, and the display of the image is done by the sequential scanning of each row of pixels by an electron beam. DLG technology is more "clever", it is no longer scanning every line, but every two lines are scanned, on the 4K picture (3840X2160), the original each frame of the image needs to scan a total of 2160 lines, one second can scan 60 frames of the picture, now only need to scan 1080 times, reducing the time by half, you can achieve a second scan of 120 frames. While achieving a high refresh rate, this process has gains and losses, and the two lines of content that were originally different are replaced by the same content of the two lines, and the effective amount of data is halved accordingly, representing the decline in resolution. The advantage is that the refresh rate can be "improved", such as it can be increased from 60Hz to 120Hz, the disadvantage is that the picture clarity drops a lot, and the original 3840X2160 screen has become 3840X1080, with obvious graininess and insufficient fineness.

  It can be imagined that the point-to-point express delivery, the ability of the courier is certain, the efficiency is capped, it is a comprehensive consideration of speed and volume, and the speed is required, it is inevitable to give up a certain amount of goods to carry first. The loss of data volume mentioned above is similar to the abandonment of the amount of goods carried.

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