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Additional
datacasting
English Wikipedia - The Free Encyclopedia
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Datacasting
Datacasting
(data broadcasting) is the
broadcasting
of
data
over a wide area via
radio waves
. It most often refers to supplemental
information
sent by
television stations
along with
digital television
, but may also be applied to
digital
signal
s on
analog TV
or
radio
. It generally does not apply to data which is inherent to the medium, such as
PSIP
data which defines
virtual channels
for DTV or
direct broadcast satellite
systems; or to things like
cable modem
or
satellite modem
, which use a completely separate channel for data.
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