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Technology Stocks : LSI Corporation -- Ignore unavailable to you. Want to Upgrade?

To: Bald Eagle who wrote (15226)	9/23/1998 9:52:00 AM
From: Paul Lee	Read Replies (1) \| Respond to of 25814

LSI Logic's Digital Terrestrial Demodulator Exceeds Performance Expectations In BBC Tests LSI's L64780 is Only Chip to Be 'Conformant in All Modes' in VALIDATE Tests LSI Logic's L64780 single-chip COFDM demodulator: * 100% interoperable with all DVB-T modulators in VALIDATE tests * Exceeded performance expectations in BBC tests * Chosen for MOTIVATE Group mobile tests carried out at IBC BRACKNELL, United Kingdom, Sept. 23 /PRNewswire/ -- LSI Logic's L64780 single-chip Coded Othogonal Frequency Division Multiplex (COFDM) demodulator has gained a further endorsement from the emerging digital television market following the publication of a BBC paper, "The Results of Tests with Domestic Receiver ICs for DVB-T," presented at this year's International Broadcast Convention in Amsterdam on 15 September 1998. In the BBC tests, the L64780 chip exceeded expected performance for a Digital Video Broadcast -- Terrestrial (DVB-T) demodulator in a number of important areas, including co-channel PAL interference, multipath performance, single echo with Doppler, and Additive White Gaussian Noise (AWGN). The L64780 chip had already been shown to conform to the DVB-T specification in all 2K and 8K modes tested -- including hierarchical modulation modes and tests in a single-frequency network -- in tests conducted by the VALIDATE Project. The VALIDATE (Verification And Launch of Integrated Digital Advanced Television in Europe) project, comprising 20 broadcast partners from nine European countries, carried out multidimensional interoperability tests in June. DVB-T modulators and demodulators from different manufacturers, including LSI's L64780 demodulator, were tested in 61 different DVB-T modes. The tests proved successful and demonstrated the interoperability of DVB-T equipment. These results are significant as they show that network operators can confidently mix and match DVB-T solutions from a host of manufacturers, thereby building a reliable infrastructure for the launch of commercial services. In addition to being 100 percent interoperable with DVB-T modulators in all tested modes, LSI Logic's single-chip COFDM device was the only demodulator with a perfect score, maintaining clear reception for the maximum time specified for all modes tested, which included both 2K and 8K, single frequency network operation, and hierarchical and non-hierarchical transmission. The BBC tests were designed to evaluate technologies available for the emerging digital terrestrial television (DTT) market to ensure their suitability for immediate implementation with outstanding quality. Results showed that the L64780 chip performed exceedingly well in a range of tests, including: * Co-channel PAL interference: Because digital signals are transmitted at a lower power than the current analog signals, the signals risk degradation by the dominant analog signal. With both analog and digital signals traveling in the same band within the multiple frequency network planning, the digital signal can become attenuated and corrupted. The demodulator must ensure that the digital signal can still be correctly demodulated when it receives the signal. This is vital for the early adoption of digital services. The L64780 chip performed 4dB better than the frequency planning assumptions for co-channel PAL interference, ensuring strong digital reception. * Multipath performance: How well a receiver responds to multiple signals or multipath is very important for city environments. Congested areas generate multiple signal paths as the signal bounces from building to building on its way from the transmitter to a set-top box or TV. Although COFDM was designed to be rugged in the presence of multipath, the degree of ruggedness depends on the design of the demodulator. The results of this test show that the L64780 chip more than adequately copes with multipath issues to enable excellent reception, even in difficult areas. * Single echo with Doppler: Digital signals can also be received by mobile equipment in moving objects, such as a train or car. For mobile reception, a robust receiver is required to cope with the Doppler effects generated. The L64780 demodulator has been designed to tackle mobile reception and has been proven by tests in the MOTIVATE project to tolerate reception in a moving vehicle at all tested speeds. The MOTIVATE group demonstrated this capability at IBC. * Additive white Gaussian noise (AWGN): This test is fundamental because it confirms that the system can operate with a high level of noise at the input to the demodulator. LSI's L64780 chip functioned successfully in this test environment. "For the digital terrestrial TV launch to be successful, companies like LSI Logic, which are supplying technology to this emerging market, must ensure that they deliver the predicted quality and coverage." said Jean-Luc Droitcourt, marketing director for digital TV at LSI Logic. "The issue is not about one-chip or two-chip solutions. It is about performance. The results of tests carried out by the VALIDATE Group and the BBC unequivocally show that the L64780 chip's superior performance enables extended coverage in all foreseen applications. It has set a new standard." "The BBC paper offers further endorsement to the EU VALIDATE tests conducted in June this year," said Jean-Marc Guyot, marketing manager for LSI Logic's Digital TV division. "Both tests reflect the superior design and robustness of our single-chip L64780 DVB-T 2k/8k demodulator. We are confident that these outstanding results, coupled with the interoperability and performance of our market-ready demodulator, will assure broadcasters, and set-top box and integrated TV OEMs of our ability to enable a secure and risk-free launch of digital services."