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Theaters began projecting movies at 4K resolution in 2011. [79] Sony was offering 4K projectors as early as 2004. [80] The first 4K home theater projector was released by Sony in 2012. [81] Despite this, there's not many finished films with 4K resolution as of 2023.
Television broadcasting stations and networks in most parts of the world upgraded from black-and-white to color transmission between the 1960s and the 1980s. The invention of color television standards was an important part of the history and technology of television .
On May 21, 2013, Microsoft announced the Xbox One, which supports 4K resolution (3840 × 2160) video output and 7.1 surround sound. [125] [126] [127] Yusuf Mehdi, corporate vice president of marketing and strategy for Microsoft, has stated that there is no hardware restriction that would prevent Xbox One games from running at 4K resolution. [126]
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.
One of the earliest electronic displays is the cathode-ray tube (CRT), which was first demonstrated in 1897 and made commercial in 1922. [1] The CRT consists of an electron gun that forms images by firing electrons onto a phosphor-coated screen. The earliest CRTs were monochrome and were used primarily in oscilloscopes and black and white ...
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 ]
4K demoscene compo, a computer art competition using programs limited to 4 kibibytes; The Java 4K Game Programming Contest; 4K resolution, a collective term for digital video formats having a horizontal resolution of approximately 4,000 pixels 4K UHDTV, an ultra-high-definition television format; 4K, the IATA airline code for Askari Aviation
The word television comes from Ancient Greek τῆλε (tele) ' far ' and Latin visio ' sight '.The first documented usage of the term dates back to 1900, when the Russian scientist Constantin Perskyi used it in a paper that he presented in French at the first International Congress of Electricity, which ran from 18 to 25 August 1900 during the International World Fair in Paris.