A televisão portátil na GB

Duas notas de resumo deste texto sobre a experiência da televisão nos telemóveis na GB:

- já há dois formatos/sistemas de transmissão, o conhecido DVB-H e um DAB-IP, que usa a rede DAB da rádio

- os investimentos nas redes estão muito longe de estarem rentabilizados

"Mobile television in Britain is available from Orange, Vodafone and 3, which all charge about £10 a month. All three use the firms' 3G networks, which cost billions to build but have so far given little return on investment. Streaming TV content over a mobile phone signal may be a quick way to make a return but it risks clogging up the network.

 

In contrast, BT's Movio's service uses a broadcast signal rather than a mobile phone network. It even works in areas without mobile phone coverage. It uses internet technology and part of the digital radio spectrum owned by Digital One, the national digital radio broadcaster controlled by GCap, to simulcast live TV channels to mobile phones fitted with a receiver.

 

The technology, called DAB-IP, works like a traditional TV and the first commercially available handset, made by Taiwan's HTC, is already rolling off the production line. As well as TV, the handsets can receive digital radio.

 

Virgin Mobile is angling for a period of exclusivity for the technology in Britain and will offer several channels in the summer. While mobile TV over 3G is available in several countries, Virgin Mobile looks set to be the first to offer real broadcast TV over DAB-IP.

 

Next week, O2 will announce results of a trial of another rival technology it has been testing in Oxford. Its service, which uses a Nokia-backed standard called DVB-H, relies on radio spectrum that will not be available in Britain until the analogue television signal is switched off in 2012"

Fonte: Guardian, "Mobile TV is not a turn-on, BT trial finds", Richard Wray, Friday January 13, 2006