Abstract
This chapter provides a brief overview of DVB (Digital Video Broadcast) digital television (DTV) broadcast standard. The three other primary DTV standards are Integrated Services Digital Broadcasting (ISDB), Advanced Television Systems Committee (ATSC), and OpenCable™. The DVB standard is a group of ETSI standards; the chapter summarizes and also compares these standards. The basic audio and video capabilities of DVB are very similar. The major differences are the RF modulation schemes. DVB uses a MPEG-2 transport stream to convey compressed digital video, compressed digital audio, and data over a 6, 7, or 8 MHz channel. Multiple video streams, multiple audio streams, and/or data may be present in the MPEG-2 transport stream. Much like MPEG-2, DVB uses descriptors to add new functionality. This enables new descriptors to be implemented without affecting receivers that cannot recognize and process the descriptors.
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