What is Digital Video Broadcast?

By cavsi Category: Audio and Video Tags:

Digital Video Broadcasting (DVB) is a set of standards that define digital broadcasting using existing satellite, cable, and terrestrial infrastructures. DVB-compliant digital broadcasting and equipment is widely available and is distinguished by the DVB logo. Numerous DVB broadcast services are available in Europe, North and South America, Africa, Asia, and Australia. The term digital television is sometimes used as a synonym for DVB.

The Digital Video Broadcasting Project (DVB) is an industry-led consortium of over 270 broadcasters, manufacturers, network operators, software developers, regulatory bodies and others in over 35 countries committed to designing open technical standards for the global delivery of digital television and data services. Services using DVB standards are available on every continent with more than 220 million DVB receivers deployed.

Digital Video Broadcast

As a transmission scheme, Digital Video Broadcasting (DVB) is based on the MPEG-2 video compression / transmission scheme and utilizing the standard MPEG-2 Transmission scheme. It is however much more than a simple replacement for existing analogue television transmission. In the first case, DVB provides superior picture quality with the opportunity to view pictures in standard format or wide screen (16:9) format, along with mono, stereo or surround sound. It also allows a range of new features and services including subtitling, multiple audio tracks, interactive content, multimedia content – where, for instance, programmers may be linked to world wide web material.

DVB is an open system as opposed to a closed system. Closed systems are content provider-specific, not expandable, and optimized only for television. Open systems such as DVB allows the subscriber to choose different content providers and allows integration of PCs and televisions.

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