| Dotcast technology is simple to install in the
cable headend. Our patented technology inserts a high-speed digital
signal into an arbitrary analog channel – simultaneously broadcasting
both without the need to create additional bandwidth. This is done
without disruption to the analog service.
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Dotcast technology is simple to install.
We simply place Dotcast modulators in the headend to broadcast
up to 80 analog and 80 digital channels. |
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We’re working with the world’s leading
set-top box manufacturers and other equipment vendors to create
boxes containing our dNTSC® / dPAL core receiving technology
– just a single demodulator chip is required. |
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The cable provider then deploys “all-digital”
set-tops to their subscribers. |
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dNTSC® / dPAL technology in the set-top
box extracts the digital portion of the combined signal, providing
all-digital service for premium customers with enabled set-top
boxes. |
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Televisions without a set-top box receive the
analog signal as usual. |
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To avoid impairment to the analog programming
in the channel and to improve reception performance, Dotcast
pre-shapes the bandwidth of the digital stream to account for
the unavoidable distortions that occur. |
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Proprietary synchronization and timing recovery
and equalization techniques allow the digital signal to be inserted
at a very low power level, which reduces analog disturbances
to a theoretical minimum. |
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