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Technology Stocks : C-Cube -- Ignore unavailable to you. Want to Upgrade?

To: Bob Strickland who wrote (40014)	4/20/1999 5:30:00 PM
From: John Rieman	Respond to of 50808

C-Cube is a clear leader in DVB. At NAB, DVB gets hot............ nab.org DVB on the Move at NAB By Richard Dean TV Technology & Production, Europe DVB, the world's largest digital television standardization organization, is staging the first US demonstrations of mobile digital television during NAB with the help of Adherent, Deutsche Telekom, Nokia, Rhode & Schwarz and Sinclair Broadcasting. Delegates boarding a shuttle bus travelling between the LVCC and the Sands Hotel will see live digital television broadcasts from the Las Vegas Stratosphere to the bus received via an ordinary omni-directional antenna feeding a standard DVB-T receiver configured for mobile transmission. In another first, the demo features 6MHz DVB-T equipment suitable for the South American and Asia markets and similar to that undergoing trials in Brazil. Catching Reception "With digital terrestrial television, broadcasters have the opportunity to introduce exciting new services," said Peter MacAvock of the DVB Project, a division of the European Broadcasting Union based in Geneva, Switzerland (booth L21883). "But this is only half the story: multichannel SDTV, datacasting, interactive TV and mobile TV all become possible if the transition is handled the right way with DVB." DVB-T networks are already on air in the UK, with Sweden, Spain, Germany and Australia to follow soon. Mobile reception is the most challenging environment for television broadcast, says MacAvock. Single-carrier systems such as conventional analogue broadcasting and the QAM-based (Quadrature Amplitude Modulation) system adopted for US digital television are unsuitable, due to constant and rapid changes of reception conditions. The OFDM (Orthogonal Frequency Division Multiplex) system, developed by DVB, uses a multi-carrier modulation technology which is tolerant to Doppler Shift frequency changes caused by movement, and can harness reflected signals that would otherwise cause interference to actually strengthen reception. The same principle is employed by NDS for its Digital ENG acquisition technology, which is capable of conveying signals from moving vehicles even in built-up areas. Moving Pictures DVB mobile TV broadcasting trials have been conducted in Germany since 1997. These trials test performance both in commuter vehicles moving through cities and trains moving at speeds in excess of 170 mph. Other countries that have or will soon have mobile services on trial include Singapore, Hong Kong and Japan. The aim of the DVB Project is to develop flexible, interoperable, MPEG-2 based systems for the delivery of digital video, audio and data using a variety of transmission media. The DVB Project has already established specifications for the transmission of video and audio for terrestrial (DVB-T), satellite (DVB-S), MDS (Multipoint Distribution Systems, embracing DVB-MC and DVB-MS), and SMATV (DVB-CS). Other specifications include service information (DVB-SI), Teletext (DVB-TXT), a common interface for Conditional Access (DVB-CI) and a common scrambling algorithm (DVB-CSA). Numerous broadcast services using DVB standards are operational in Europe, North and South America, Africa, Asia and Australasia.