On Fri, 2 May 2008 04:04:32 +0000 (UTC) Alan <nospam@[EMAIL PROTECTED]
>
wrote:
| 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?
Mass produced, this could all be done for under $100 in one chip.
However,
is there a market for mass producing it? NO! I don't expect to ever see
one of these in the "non-pro" grades for under $899.95.
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