Technology major Telegen Corporation's subsidiary Telisar Corporation has announced the first successful simultaneous transmission of a separate broadcast digital TV program on an analog broadcast TV channel program.

The live TV broadcast transmission system demonstrated in Telisar's technology development centre showed high quality digital and analog images. The on-air test broadcasts were made possible by Telisar's recent developments in digital signal processing (DSP).

The Separate Video Program (SVP) technology provides a comprehensive digital television channel within a regular analog TV broadcast. This will enable two separate programmes to be broadcast in the same spectrum while compatibility is maintained with the consumer's existing television sets.

However, the TV station will continue to broadcast its original analog programming while it adds the SVP digital TV signal containing different programming material or digital simulcast. This would therefore enable in doubling the number of broadcast TV channels available.

The SVP provides an alternative to other digital TV broadcast technologies that require new TV station broadcast towers to be built and consumers to buy new digital television sets. This would also make the transition to digital television much easier for TV stations by eliminating significant construction costs, and for consumers, by creating a legacy system, which allows them to naturally, phase out their current television sets rather than force consumers to immediately purchase DTV compatible television sets.

Telisar's business development vice president, Donna M. Morabito says that the SVP technology breaks down the barriers to digital television broadcasting by allowing broadcasters to continue to provide analog television to their viewers, while vastly expanding their capability to provide additional high-quality, digital programming.




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