Digital multimedia broadcasting

Digital multimedia broadcasting (DMB) is a digital radio transmission technology developed in South Korea[1][2][3] as part of the national IT project for sending multimedia such as TV, radio and datacasting to mobile devices such as mobile phones, laptops and GPS navigation systems.

This technology, sometimes known as mobile TV, should not be confused with Digital Audio Broadcasting (DAB) which was developed as a research project for the European Union.

DMB has also some similarities with its former competing mobile TV standard, DVB-H.[6] T-DMB is made for terrestrial transmissions on band III (VHF) and L (UHF) frequencies.

DMB is unavailable in the United States because those frequencies are allocated for television broadcasting (VHF channels 7 to 13) and military applications.

The stream is forward error corrected by Reed Solomon encoding and the parity word is 16 bytes long.

Smartphones integrated Qualcomm Snapdragon 801 or higher received firmware upgrade to support HD DMB.

[11] South Korea has had Full T-DMB services including JSS (Jpeg Slide Show), DLS (Dynamic Label Segment), BWS, and TPEG since 2006.

[12] Receivers are integrated in car navigation systems, mobile phones, portable media players, laptop computers and digital cameras.

In mid-August 2007, Iriver, a multimedia and micro-technology company released their "NV", which utilizes South Korea's DMB service.

[citation needed] In tunnels or underground areas, both television and radio broadcast is still available, though DMB may skip occasionally.