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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
In North America, digital SDTV is broadcast in the same 4:3 fullscreen aspect ratio as NTSC signals, with widescreen content often being center cut. [ 5 ] In other parts of the world that used the PAL or SECAM color systems, digital standard-definition television is now usually shown with a 16:9 aspect ratio , with the transition occurring ...
The so-called NTSC-Film standard has a digital standard resolution of 720 × 480 pixel for DVD-Videos, 480 × 480 pixel for Super Video CDs (SVCD, Aspect Ratio: 4:3) and 352 × 240 pixel for Video CDs (VCD). [9] The digital video (DV) camcorder format that is equivalent to NTSC is 720 × 480 pixels. [10]
The other common standard definition digital standard, used in the rest of the world, is 576i. It originated from the need for a standard to digitize analog 525 line TV (defined in BT.601) and is now used for digital TV broadcasts and home appliances such as game consoles and DVD disc players. [1] [2]
HDTV can be recorded to D-VHS (Digital-VHS or Data-VHS), W-VHS (analog only), to an HDTV-capable digital video recorder (for example DirecTV's high-definition digital video recorder, Sky HD's set-top box, Dish Network's VIP 622 or VIP 722 high-definition digital video recorder receivers (these set-top boxes allow for HD on the Primary TV and SD ...
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.
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