In any regard, two particular groups of hardware decoding PCI cards developed and are discussed below:
#Mpeg 2 decoder card software
However, this is no longer the case today, as software decoding devices have become the ubiquitous offering, although a few manufactures still produce hardware decoding devices too. Still, many individuals seemed to desire the off-loading from the CPU that a hardware decoding device offered, and, hence, this class of device remained quite common within the marketplace alongside the newer "software decoding" devices (see below). Within a few years, the increased computational abilities of the average CPU greatly diminished any real need for a dedicated decoding device. Consequently, the first DVB devices for the personal computer market were PCI cards that all featured an on-board hardware MPEG2 decoder IC (see "full-featured" or "premium" cards below). As TS decoding operations can be computationally intensive, allowing the receiving device to also handle the decoding of the incoming stream effectively alleviates the need to tie up the host system's CPU with that burden and, instead, leaves the CPU free to tackle other processes.Īt the time that digital TV services emerged, MPEG2 encoded content was the norm and decoding of such streams was still significantly challenging for the typical CPU of that era. This class of DVB device features an on-board hardware MPEG decoder IC.
3 Relevance of Hardware Decoding cards Today.2.1 Historical Perspective (a.k.a "Budget" cards).1.2 (i) "Full-Featured" or "Premium" Cards.
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