VideoGuard (sometimes referred to simply as NDS), produced by NDS, is a digital encryption system for use with conditional access television broadcasting. It is used on digital satellite television systems - some of which are operated by News Corporation, which owns about half (49%) of NDS. Its two most widely used implementations are BSkyB's Sky Digital in the United Kingdom and Ireland and DirecTV in the United States, the former of which launched the digital version of the system in 1998. ...
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