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Digital cable-ready or DCR is a label used by manufacturers on new televisions which feature built-in technology that allows consumers to receive SDTV and HDTV digital cable programs. [4] Usually this is a QAM tuner , since over-the-air broadcasts are either COFDM ( DVB-T and ISDB-T ) or 8VSB ( ATSC -T).
Digital cable is the distribution of cable television using digital data and video compression.The technology was first developed by General Instrument. By 2000, most cable companies offered digital features, eventually replacing their previous analog-based cable by the mid 2010s.
QAM is a digital television standard using quadrature amplitude modulation. It is the format by which digital cable channels are encoded and transmitted via cable television providers. QAM is used in a variety of communications systems such as Dial-up modems and WiFi.
Digital cable, however, made cable boxes more of a necessity as it provided channels that cable-ready televisions could not. CableCARD technology allows a third-party digital converter device to connect to and receive signals from a digital cable provider, instead of being reliant on a box provided by the cable provider.
High definition—1080p (only used by a few cable operators and some terrestrial stations broadcast in 1080p) Most digital television sets sold in the U.S. use a display with a 16:9 aspect ratio to optimally display HDTV-formatted content. Lower-resolution sources like regular DVDs may be upscaled to the native resolution of the TV.
The input digital signal may be over-the-air terrestrial television signals received by a television antenna, or signals from a digital cable system. It normally does not refer to satellite TV , which has always required a set-top box either to operate the big satellite dish , or to be the integrated receiver/decoder (IRD) in the case of direct ...
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It was feared that the US switch-off would cause millions of non-cable- and non-satellite-connected TV sets to "go dark". Viewers who did not upgrade, either to a television with a digital tuner or a set-top box, ended up losing their only source of television, unless they relied only upon the aforementioned non-full-power broadcasters.
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