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With the advent of 4K/UHD TV, the traditional 'baseband' video router has become something of a victim to the data rates. UHD TV requires 3840x2160P @ 50 Hz or 60 Hz. Traditional crosspoint based devices have therefore been reduced in size by a factor of 4 as the UHD signal is split into 4x1080P@50 Hz/60 Hz 3 Gb/s streams.
UHD Phase A is a set of guidelines from the Ultra HD Forum for the distribution of SDR and HDR content using Full HD 1080p and 4K UHD resolutions. It requires a color depth of 10 bits per sample, a color gamut of Rec. 709 or Rec. 2020, a frame rate of up to 60 fps, a display resolution of 1080p or 2160p and either standard dynamic range (SDR ...
However, there is a rapid increase in media content being released in 4K and even 5K resolution. Online streaming services such as Netflix and Amazon Prime Video launched videos in 4K resolution in 2014 [3] and are actively expanding their collection of videos in 4K resolution. As 4K content becomes more common, the usefulness of 5K displays in ...
This chart shows the most common display resolutions, with the color of each resolution type indicating the display ratio (e.g., red indicates a 4:3 ratio).
The CEA definition does allow manufacturers to use other terms—such as 4K—alongside the Ultra HD logo. [4]: 9 Since the resolution in CEA's definition is only a minimum requirement, displays with higher resolutions such as 4096 × 2160 or 5120 × 2880 also qualify as "Ultra HD" displays, provided they meet the other requirements.
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12 bits per sample Rec. 2020 uses video levels where the black level is defined as code 256 and the nominal peak is defined as code 3760. Codes 0–15 and 4,080–4,095 are used for the timing reference. Codes 16 through 255 provide video data below the black level while codes 3,761 through 4,079 provide video data above the nominal peak. [2]