Digital video broadcasting (DVB) is the name given to a worldwide initiative to replace the current analogue-based television systems with a digital service. The reasons for the switch over are many and varied:
• Improved quality of service.
• The ability to fit more channels into the existing frequency bandwidth.
• The ability to mix and match services.
• The ability to provide interactive services and national and regional options from a central facility.
DVB systems will deliver multimedia — audio, video and data — via several systems, depending on the existing networks for analogue systems. Several such systems can be used: satellite, microwave, telephone, cable and terrestrial broadcast. ...
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