Digital Video Broadcasting (DVB)
Digital Video Broadcasting (DVB) – a) A system developed in Europe for digital television transmission, originally for standard definition only, though high-definition modes have now been added to the specification. DVB defines a complete system for terrestrial, satellite, and cable transmission. Like the ATSC system, DVB uses MPEG-2 compression for video, but it uses MPEG audio compression and COFDM modulation for terrestrial transmission. b) At the end of 1991, the European Launching Group (ELG) was formed to spearhead the development of digital TV in Europe. During 1993, a Memorandum of Understanding was drafted and signed by the ELG participants, which now included manufacturers, regulatory bodies and other interest groups. At the same time, the ELG became Digital Video Broadcasting (DVB). The TV system provided by the DVB is based on MPEG-2 audio and video coding, and DVB has added various elements not included in the MPEG specification, such as modulation, scrambling and information systems. The specifications from DVB are offered to either ETSI or CENELEC for standardization, and to the ITU.
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