Enabling IP in confidence
World's unique IP seamless switch with bypass mechanism
Serbia launch DVB-T2
ETV - a national broadcasting agency in Serbia, started broadcasting its services on March 21st using DVB-T2 technology
Enensys participates to the first T2-Lite plugfest
The plugfest is the opportunity to perform interoperability testing of T2Gateway and modulator implementations using advanced DVB-T2-Lite profile.
Building the world's largest DVB-T2 network
a DVBScene article from Ian Barnard, project manager at GOtv
47 countries have adopted, tested or deployed DVB-T2
DVB-T2 is now the world's fastest growing DTV standard
Freeview HD units sold reached 4.4 million
the number of Freeview HD units sold reached 4.4 million by the end of December 2011
Nigeria launch DVB-T2
Nigeria launched GOtv payTV services using DVB-T2 standard in Ibadan on October 15th
Kenya launch DVB-T2
Kenya launched GOtv payTV services using DVB-T2 standard
Velister Ltd relies on ENENSYS SFN solution
Velister DTT network operator in Cyprus deployed ENENSYS secured SFN solution
MULTICHOICE selects ENENSYS for the world's largest DVB-T2 roll-out
GOtv launches in Africa on DVB-T2
Gotv, a product of MultiChoice, is a new digital pay television offering using DVB-T2
Uganda launch DVB-T2
Uganda launched DTT services using DVB-T2 standard
Zambia launch DVB-T2
Zambia launched pay TV services using DVB-T2 standard
DVB-T2 Lite profile is now available. This subset of the T2 standard is designed to support applications such as mobile broadcasting
Singapore selects Media Broadcast and ENENSYS for DVB-T2 trial
MediaCorp selects ENENSYS for DVB-T2 trial network
ENENSYS released T2Edge enabling DVB-T2 regional services over SFN networks
ENENSYS on twitter : follow all ENENSYS news on twitter
General Overview of DMB
DMB rationale
DMB (which stands for Digital Multimedia Broadcasting) is a system specification enabling the broadcasting of radio services in a digital form. This technology has its origins in the late 80s, when the original DAB (Digital Audio Broadcasting) was first developed as part of the Eureka 147 project. It is now coordinated by the World DMB Forum, which represents more than 30 countries.
DMB baseline features
DAB was the first standard to use Orthogonal Frequency Division Multiplexing (OFDM) modulation. This digital transmission technology provides enhanced performance in a multipath environment compared to existing AM and FM radio transmission systems.
The DAB spécification was based on MPEG Audio Layer II coding, which was then state of the art and is still a commonly used coding technology in radio and TV nowadays. Since then, several generation of coding technology have overtaken this standard, including MPEG Audio Layer III, (MP3) and DAB+ has integrated MPEG-AAC in its latest evolution (HE-AACv2) which provides much better quaklity for similar bitrates.
Another important innovation was the addition of video/multimedia capabilities to Digital Audio Broadcasting, allowing DAB to become a multimedia digital radio platform which was then renamed DMB.
Both DMB and DAB+ use the technical basis of DAB, and just add new applications, new transport protocols and a second error control coding layer. All three technologies can therefore be used alongside each other on one multiplex and basically use the same infrastructure.
WorldDMB recommends that DAB or DAB+ should be used for radio-centric services and that DMB should be used for services which include a video component.
References:
- worldDMB: http://www.worlddab.org/
- ETSI: http://www.etsi.org/
- Wikipedia : http://en.wikipedia.org/wiki/Digital_radio