<phil-news-nospam@[EMAIL PROTECTED]
> wrote in message
news:fvftj8117uu@[EMAIL PROTECTED]
> 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.
>
I appreciate all the various comments on my original question. I do see a
possible market for such a device if the economy of scale were there. One
problem people face as they go from one to two (or more) HDTV's in the
home
is how to distribute non-OTA material (satellite, game, blu ray, cable,
etc.) from the one source to many outlets. So far, the cabling is
expensive
and ***bersome with the use of various amps or distribution devices adding
to the cost. It would be awesome if the existing distribution in the
home,
the coax already in the wall, could be used with an HDTV RF Modulator.
I think ultimately we may find source and viewing devices being network
devices and distribution might occur of Cat5E or Cat6 since they have the
bandwidth and are dirt cheap.
MM
|
