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Descramble in cable television context is the act of taking a scrambled or encrypted video signal that has been provided by a cable television company for premium television services, processed by a scrambler and then supplied over a coaxial cable and delivered to the household where a set-top box reprocesses the signal, thus descrambling it ...
The most common of these was a channel-based filter that would effectively stop the channel being received by those who had not subscribed. These filters would be added or removed according to the subscription. As the number of television channels on these cable networks grew, the filter-based approach became increasingly impractical.
All of Malta's national and political party channels are available free-to-air. The national channels TVM and TVM2, Parliament TV and the political party channels NET and ONE, all are broadcast via the free-to-air DVB-T service. Even HD versions of these channels are available free-to-air. The only scrambled channel in Malta is ITV Teleshopping.
Decode scrambled digital channels and premium programming such as movie channels; Provide interactive two-way communications for electronic program guides, pay-per-view, video on demand, or switched video streams; New digital televisions and other devices that are labeled DCR (Digital cable ready) contain:
However, as all operations are on 8-bit subblocks, the algorithm can be implemented using regular SIMD, or a form of “byteslicing”. As most SIMD instruction sets, (with the exception of AVX2 ) do not support parallel look-up tables, the S-box lookups are done in a non-bytesliced implementation, but their integration into the rest of the ...
Channels scrambled (encrypted) with VideoCipher and VideoCipher II could be defeated, and there was a black market for illegal descramblers. By the end of 1987, 16 channels had employed encryption with another 7 planned in the first half of 1988. Packages that offered reduced rates for channels in bulk had begun to appear.
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Like its competitors, such as ONTV and SelecTV, Preview was a scrambled UHF subscription channel requiring a special set-top box to decode the signal. Preview's broadcast day was mainly between 7 p.m. and 5 a.m., but varied depending on the market and during later periods of the channel's existence. [2]