In article <tprSj.35586$Rk6.856@[EMAIL PROTECTED]
>
=?iso-8859-1?Q?in_Technicolor=AE?= <cinerama@[EMAIL PROTECTED]
> writes:
>Does anyone know why we haven't seen the creation of a RF Modulator
similar
>to the ones we've been using with our video games, cameras, etc.? You
know
>the type I'm talking about? Inside one end you present a baseband video
>signal, and then, out the other, comes either Channel 3 or Channel 4
which
>you can connect to the set with twin lead or coax with an F connector.
>
>It seems to me that it would be really great to have a product like this
>where one could introduce a component signal (RGB or YpRpB) or an
DVI/HDMI
>signal and have a 1080i/720p signal coming out on 1 or 2 HDTV digital
>channels. Is this product not being developed because of DRM concerns?
>
>Just curious.
Because, as explained here several times in the past, it is far more
complicated
than simply modulating a tiny AM transmitter with the baseband video
signal.
You need to sample the signal, to store it in a frame buffer, process
that data
into MPEG-2, generate PSIP data for it, assemble the whole mess into an
ATSC format
data stream, modulate that with an 8vsb modulator which is somewhat more
complex
than that analog AM transmitter was.
Clearly, it can be done -- the TV stations do it. However, how many
thousands
of dollars are you willing to fork over for it?
Alan
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