Outline of the DMB system

DMB uses Advanced Video Coding for video services, BSAC or HE-AAC V2 audio coding for audio services and BIFS for interactive data related services.
All of these encoded Elementary Streams are multiplexed into MPEG-2 TS packets.

To increase the necessary robustness especially for mobile reception, an additional block coding scheme (Reed-Solomon Coding) and convolutional interleaving is applied to the sheer MPEG-2 Transport Stream. The byte-interleaved and error-protected TS packets are transmitted through the Eureka-147 stream mode. Extraction, error control decoding, stripping of Elementary Streams and synchronisation - both temporally and spatially - as well as source decoding and reproduction is shown in the figure below for the terminal side.

Figure: Terminal processing chain for DMB

All together, this chain represents a classical combination of MPEG-4 elements transported with an MPEG-2 Transport Stream. BIFS as one of those MPEG elements/norms represents quite a powerful tool for data provision and interactivity.

The specification for DMB obtained official approval by ETSI in June 2005.