A Chinese chip company announced that it has developed the first mobile TV chip based on a domestic specification called China Multimedia Mobile Broadcasting (CMMB).

The CMMB demodulator is called IF101. It was developed by Beijing Innofidei Technology, a member of the CMMB workgroup. The group is backed by the State Administration of Radio, Film and Television, which played a key role in developing CMMB and is advocating its adoption as China's main mobile TV technology.

SARFT is planning to build a regional test network in Beijing by June and to start trials by year end. The goal is to nationally deploy CMMB in the first half of 2008.

In a report published in SARFT's monthly magazine, Innofidei said it's also developing technology for watching TV on cell phones and PMPs. Last October, a government ministry rolled the CMMB spec, based on homegrown technology known as STiMi (short for satellite and terrestrial interactive multiservice infrastructure). The service operates in the 2.6-GHz frequency, using 25 MHz of bandwidth to offer 25 video and 30 radio channels, plus some data channels.

STiMi was developed by the Academy of Broadcast Science, part of a government ministry that regulates broadcasting here. STiMi supports the S- and UHF/VHF bands and will use both satellites and terrestrial relays to implement coverage. The technology bears some resemblance to Europe's DVB-SH.

For now there are three mobile TV standards in China, T-DMB, DAB derived DMB-T/H and CMMB. DAB and DMB are being used in mobile multimedia broadcasting in Beijing, Shanghai and Guangzhou. As a homegrown standard, some analysts think CMMB will be a trend for the long run, but in the following two to three years, DMB will still be dominant.

Source:佚名