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  2. Ultra-high-definition television - Wikipedia

    en.wikipedia.org/wiki/Ultra-high-definition...

    Ultra-high-definition television (also known as Ultra HD television, Ultra HD, UHDTV, UHD and Super Hi-Vision) today includes 4K UHD and 8K UHD, which are two digital video formats with an aspect ratio of 16:9. These were first proposed by NHK Science & Technology Research Laboratories and later defined and approved by the International ...

  3. 4K resolution - Wikipedia

    en.wikipedia.org/wiki/4K_resolution

    4K resolution refers to a horizontal display resolution of approximately 4,000 pixels. [1] Digital television and digital cinematography commonly use several different 4K resolutions. In television and consumer media, 3840 × 2160 (4K UHD) with a 16:9 aspect ratio is the dominant 4K standard, whereas the movie projection industry uses 4096 × ...

  4. Display resolution standards - Wikipedia

    en.wikipedia.org/wiki/Display_resolution_standards

    The resolution 3840 × 2160, sometimes referred to as 4K UHD or 4K × 2K, has a 16:9 aspect ratio and 8,294,400 pixels. It is double the size of Full HD (1920 × 1080) in both dimensions for a total of four times as many pixels, and triple the size of HD (1280 × 720) in both dimensions for a total of nine times as many pixels. It is the lowest ...

  5. Ultra HD Blu-ray - Wikipedia

    en.wikipedia.org/wiki/Ultra_HD_Blu-ray

    t. e. Ultra HD Blu-ray (4K Ultra HD, UHD-BD, or 4K Blu-ray) [2][3] is a digital optical disc data storage format that is an enhanced variant of Blu-ray. [4] Ultra HD Blu-ray supports 4K UHD (3840 × 2160 pixel resolution) video at frame rates up to 60 progressive frames per second, [4] encoded using High-Efficiency Video Coding. [4]

  6. Display resolution - Wikipedia

    en.wikipedia.org/wiki/Display_resolution

    1080p progressive scan HDTV, which uses a 16:9 ratio. Some commentators also use display resolution to indicate a range of input formats that the display's input electronics will accept and often include formats greater than the screen's native grid size even though they have to be down-scaled to match the screen's parameters (e.g. accepting a 1920 × 1080 input on a display with a native 1366 ...

  7. High-definition television in the United States - Wikipedia

    en.wikipedia.org/wiki/High-definition_television...

    High-definition television (HDTV) in the United States was introduced in 1998 and has since become increasingly popular and dominant in the television market. Hundreds of HD channels are available in millions of homes and businesses both terrestrially and via subscription services such as satellite, cable and IPTV.