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The five main ATSC formats of DTV currently [when?] broadcast in the U.S. are: . Standard definition—480i, to maintain compatibility with existing NTSC sets when a digital television broadcast is converted back to an analog one [citation needed] —either by a converter box or a cable/satellite operator's proprietary equipment
ATSC 3.0 (also known by the moniker NextGen TV) is a new digital television transmission standard which is not backwards compatible with ATSC 1.0, the standard employed in the 2009 digital transition. Transition to ATSC 3.0 is voluntary on both ends: television manufacturers are not required to provide ATSC 3.0 compatible tuners in televisions.
DirecTV in the US launched the first commercial digital satellite platform in May 1994, using the Digital Satellite System (DSS) standard. [13] [14] Digital cable broadcasts were tested and launched in the US in 1996 by TCI and Time Warner.
ATSC Standard A/53, which implemented the system developed by the Grand Alliance, was published in 1995; the standard was adopted by the Federal Communications Commission in the United States in 1996. It was revised in 2009. ATSC Standard A/72 was approved in 2008 and introduces H.264/AVC video coding to the ATSC system.
ATSC 3.0 is a major version of the ATSC standards for terrestrial television broadcasting created by the Advanced Television Systems Committee (ATSC). [1] [2] [3]The standards are designed to offer support for newer technologies, including HEVC for video channels of up to 2160p 4K resolution at 120 frames per second, wide color gamut, high dynamic range, Dolby AC-4 and MPEG-H 3D Audio ...
This is the standard broadcast frame rate for countries with an NTSC history—mainly the US, Canada, Japan and South Korea. This was the standard format of American TVs due to the displaying of CRT screens which were common place before the wide spread use of digital monitors. Alternating currents are used to time each scan, by which two scans ...
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ATSC was initially formed in 1982 to develop a first-generation digital television standard that could replace existing analog transmission systems. The new digital system became known as "ATSC 1.0." ATSC 1.0 is in use in the United States, Canada, Mexico, South Korea and Honduras, and also in the Dominican Republic.
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