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Last modified: | What is mobile TV? DVB-H? T-DMH? MBMS? MediaFLO? etcDAB-IP - Movio DAB-IP (Digital Audio Broadcast - Internet Protocol) is a variant of DMB. It's being called Movio and uses technology developed by BT and Microsoft. Virgin Mobile was first to the UK market with a working offering using Movio in 2006. There's even a DAB-IP handset – the Trilogy- which has been developed by HTC (the firm behind O2's XDA range, for example). DVB-H One-Seg One-Seg or 1seg is a Japanese standard for digital terrestrial broadcasting aimed at mobile devises such as handsets. The service started on April 1st, 2006. nitially called 'one segment broadcast it has been abbreviated. Because it is small, broadcasters can transmit only a low resolution picture of QVGA size. It is hoped that One-Seg can be tied into regular applications such as email or take advantage of location based information via GPS, for example. It is a variant of ISDB-T and is often described as ISDBT- 1. S-DMB The satellite version of DMB - S-DMB (Satellite Digital Multimedia Broadcasting) - is already offered in South Korea. It's currently the most successful mobile broadcast TV service and has been put together by SK Telecom's TU Media subsidiary and Japan's Mobile Broadcasting Corporation. The service had attracted around 372,000 subscribers by Q1 2006 and is aiming for one million subscribers by Q1 2007. It's not a trial because Koreans pay around £11.39 to join the service and £7.40 per month to view it. There's one major drawback, of course. The whole thing is dependent on just one single satellite and it's pointing at Korea. T-DMB Based on DAB (Digital Audio Broadcast), which is familiar as the standard for digital radio stations, the mobile broadcast variant has been termed T-DMB (Terrestrial – Digital Mobile Broadcast). Significantly T-DMB went live in Korea in May 2005. Versions of this technology are being trialled in Europe – including the Mi Friends project for the World Cup in Germany (Regensburg). LG has already announced the V9000 for T-DMB and Samsung could easily convert T-DMB models it sells in Korea. TDtv TDtv allows operators to
deploy a broadcast video solution using their existing TDD spectrum licenses,
harmonised across Western Europe. It also allows the carrier full control of
about 15 channels of QVGA, instead of forcing them to partner/share with a
broadcast company. The MBMS broadcast architecture
supports an efficient economic model. TDtv is likely to be an accelerator for
UMTS TDD technology in general. (See UMTS TDD Alliance
www.umtstdd.org) |
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