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CableCARD is a special-use PC Card device that allows consumers in the United States to view and record digital cable television channels on digital video recorders, personal computers and television sets on equipment such as a set-top box not provided by a cable television company. The card is usually provided by the local cable operator ...
A "181-channel tuner" receives 125 on cable (1 to 125), plus 10 (126 to 135) more for digital cable ready TVs, plus the 56 (14 to 69) which are not identical in both (2 to 13). Other cable channels, 0, 00 and 1, which along with channels 136-158 are ill-defined and thus rarely used, and often not included in otherwise cable-ready tuners.
In May 2008, Advanced Digital Broadcast (ADB) was the first set-top-box manufacturer to receive full tru2way certification for their ADB-4820C Set-Back Box. In June 2008, six major cable companies signed a "binding" memorandum of understanding (MOU) to have all of their digital cable systems ready for Tru2way by July 1, 2009.
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
AllVid was a CableCARD replacement proposed by the U.S. Federal Communications Commission (FCC), U.S.A Federal Bureau of Investigation (FBI), intended to provide bidirectional compatibilities such as interactive programming guides, video-on-demand and pay-per-view, since retail CableCARD-ready devices are unable to access such systems.
Using the same technology General Instrument (GI) demonstrated the digital transmission of multiple high quality standard definition programs in a 6 MHz cable channel. [2] In the 1990s, cable providers began to invest heavily in this new multi-channel digital TV technology to expand the number of channels and services available to subscribers.
DCAS, as envisioned, removed the need for physical set-top boxes or CableCARDs to protect encrypted digital content. It was proposed that instead of a card with removable circuitry, a custom ASIC chip could be soldered onto the circuitboard of any digital cable-ready device. DCAS software would then run on this custom chip.
Newer TVs, however, often feature digital tuners including digital cable tuners (QAM for USA, DVB-C for Europe). But cable providers often encrypt all of most of the channels, causing the TV to be unable to receive these channels directly. In USA, there were TVs with CableCARD slot to allow decryption without a cable box. However, they are now ...
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