HDTV Tuner Output to Multiple TVs Over Coax

[John T]

Scenario:
DishNetwork 921 receiver (HDTV tuner built-in)
Sanyo PLV-Z2 projector
Toshiba 23HL84 LCD HD-ready TV
(soon) Another flat TV (at least HD-ready, possibly built-in tuner)

There is a run of component video between the receiver and the
projector (this isn't my problem, just putting it here for
completeness). There is a run of RG6 coax from the receiver to a
coax splitter which then feeds RG6 coax to the Toshiba TV (and the
location of the soon-to-be-installed TV).

What I want to do is get HD output from the receiver to the Toshiba
and other TV. Running component cables to the locations of the TVs
is not an option I want to consider due to the complexity of the
run(s).

Is there a way to get component video with 2-channel stereo (no need
for Dolby) onto coax then back into component video and stereo? Is
there another option that doesn't require new runs of cable?

Thanks!

--
John T
http://tknowlogy.com/TknoFlyer
http://www.pocketgear.com/products_search.asp?developerid=4415
____________________

[Brad Houser]

"John T" <jt@his.isp> wrote in message
news:41e56f41$0$12729$9a6e19ea@news.newshosting.co m...
> Scenario:
> DishNetwork 921 receiver (HDTV tuner built-in)
> Sanyo PLV-Z2 projector
> Toshiba 23HL84 LCD HD-ready TV
> (soon) Another flat TV (at least HD-ready, possibly built-in tuner)
>
> There is a run of component video between the receiver and the
> projector (this isn't my problem, just putting it here for
> completeness). There is a run of RG6 coax from the receiver to a
> coax splitter which then feeds RG6 coax to the Toshiba TV (and the
> location of the soon-to-be-installed TV).
>
> What I want to do is get HD output from the receiver to the Toshiba
> and other TV. Running component cables to the locations of the TVs
> is not an option I want to consider due to the complexity of the
> run(s).
>
> Is there a way to get component video with 2-channel stereo (no need
> for Dolby) onto coax then back into component video and stereo? Is
> there another option that doesn't require new runs of cable?

If you figure out a way to do this with one cable, I am sure a lot of people
would love to hear about it. There is no single conductor signalling method
that would work with off the shelf hardware. You would either have to
convert the three component video streams into some modulated rf streams at
different "channels" and convert them back to baseband at the other end, or
somehow digitize the signal and send it as a high bitrate digital stream to
the receivers. Neither of these technologies exist today (at least if they
do they are not going to be cheap), but it could some day be affordable!

Brad Houser
<not speaking for Intel>

[Lucas Tam]

"John T" <jt@his.isp> wrote in news:41e56f41$0$12729
$9a6e19ea@news.newshosting.com:

> What I want to do is get HD output from the receiver to the Toshiba
> and other TV. Running component cables to the locations of the TVs
> is not an option I want to consider due to the complexity of the
> run(s).
>
> Is there a way to get component video with 2-channel stereo (no need
> for Dolby) onto coax then back into component video and stereo? Is
> there another option that doesn't require new runs of cable?

You can use Cat5 to transfer component video.

But probably the easiest solution is just to transfer the signal directly
from your Satellite via RJ6 and then add another tuner on the other end.

--
Lucas Tam (REMOVEnntp@rogers.com)
Please delete "REMOVE" from the e-mail address when replying.
http://members.ebay.com/aboutme/coolspot18/

[John T]

"Lucas Tam" <REMOVEnntp@rogers.com> wrote in message
news:Xns95DC9E0B01C06nntprogerscom@140.99.99.130
>
> You can use Cat5 to transfer component video.

That would require another cable run - something I don't want to do.

> But probably the easiest solution is just to transfer the signal
> directly from your Satellite via RJ6 and then add another tuner on
> the other end.

A great idea - if the receiver actually sent an HD signal on the coax
output. This receiver only sends standard definition video on the coax.

--
John T
http://tknowlogy.com/TknoFlyer
http://www.pocketgear.com/products_search.asp?developerid=4415
____________________

[John T]

"Brad Houser" <bradDOThouser@intel.com> wrote in message
news:cs409k$ga3$1@news01.intel.com
>
> If you figure out a way to do this with one cable, I am sure a lot of
> people would love to hear about it.

I was sure I wasn't the first one to think of this... :) That's why I was
disappointed not finding one already.

> There is no single conductor
> signalling method that would work with off the shelf hardware. You
> would either have to convert the three component video streams into
> some modulated rf streams at different "channels" and convert them
> back to baseband at the other end, or somehow digitize the signal and
> send it as a high bitrate digital stream to the receivers. Neither of
> these technologies exist today (at least if they do they are not
> going to be cheap), but it could some day be affordable!

The way I see it, this is akin to cable Internet. I'm no electrical
engineer (software engineer, though) so I'm definitely open to an education,
but it seems that there must be a way to convert the 5 analog inputs
(Y/Pr/Pb video, left/right audio) into five different frequencies way up in
the spectrum then pull them back out on the other end. In my case, it could
be low, middle or high since the only signal sent on these runs would be
this HDTV signal. Or, as you say, convert the five signals into a digital
bitstream then send that over the wire.

--
John T
http://tknowlogy.com/TknoFlyer
http://www.pocketgear.com/products_search.asp?developerid=4415
____________________

[Lucas Tam]

"John T" <jt@his.isp> wrote in news:41e5b0a2$0$12766
$9a6e19ea@news.newshosting.com:

>> But probably the easiest solution is just to transfer the signal
>> directly from your Satellite via RJ6 and then add another tuner on
>> the other end.
>
> A great idea - if the receiver actually sent an HD signal on the coax
> output. This receiver only sends standard definition video on the coax.

Can't you split your incoming signal?

I don't mean send the signal directly as HD, but rather as a coded
Satellite signal - then purchase another satellite box to decode the
signal.

--
Lucas Tam (REMOVEnntp@rogers.com)
Please delete "REMOVE" from the e-mail address when replying.
http://members.ebay.com/aboutme/coolspot18/

[John T]

"Lucas Tam" <REMOVEnntp@rogers.com> wrote in message
news:Xns95DCE331D1B3Fnntprogerscom@140.99.99.130
>
> Can't you split your incoming signal?
>
> I don't mean send the signal directly as HD, but rather as a coded
> Satellite signal - then purchase another satellite box to decode the
> signal.

Yes, that's an (expensive) option, but my intent isn't to have independent
video displays. My goal is purely trying to get the same High Def image
that is displayed on the projector to the LCD TV(s). I can get a standard
definition image to them with no problem at all. I'm just being a bit of a
cry baby in that I have HD-capable gadgets that can't show off their
potential. :)

This particular receiver (DishNet 921) can output either HD or standard
definition - not both at the same time. Right now, since the "remote" TV(s)
only have access to coax, the receiver can only give them a standard
definition signal (since SD is all it can put on its coax output). I would
be content if the receiver re-encoded the HD signal thereby requiring an HD
decoder on the other end, but that's not in the cards, either.

So, as it stands, I have a nice 92" HD-capable image from the projector that
has to be "downgraded" to a standard definition if I want the remote TV(s)
to show the same image. (I have the S-video and component outputs from the
satellite receiver connected to a Kenwood VR-5900 which puts it onto
component video sent to the projector while the coax output from the sat
recvr runs to the TV(s).)

Now, I understand that Dish Network is about to release a new receiver that
will output true HD and SD simultaneously (although the coax output is still
to be SD). This would allow me to keep the projector in full HD mode, but
still leaves me with an SD image on the HD-capable TV(s). This would be a
better solution, but still not ideal.

Ideal would be finding a way of getting the HD image to the TV(s). :)

--
John T
http://tknowlogy.com/TknoFlyer
http://www.pocketgear.com/products_search.asp?developerid=4415
____________________

[COneilliv]

>> But probably the easiest solution is just to transfer the signal
>> directly from your Satellite via RJ6 and then add another tuner on
>> the other end.
>
>A great idea - if the receiver actually sent an HD signal on the coax
>output. This receiver only sends standard definition video on the coax.
>

How many lines do you have running from the dish to the receiver? Could you
use a multiswitch to distribute the signal before the receiver?

CJ

[John T]

COneilliv wrote:
>
> How many lines do you have running from the dish to the receiver?
> Could you use a multiswitch to distribute the signal before the
> receiver?

What I want to do is take the HD output of the current satellite tuner and
send it to the TVs. I can easily send a satellite signal to the TV and
install a separate satellite tuner there, but that's not my goal. :)

These TVs won't be used independently of the primary projector so having
additional tuners is an unnecessary expense (I hope).

--
John T
http://tknowlogy.com/TknoFlyer
http://www.pocketgear.com/products_search.asp?developerid=4415
____________________

[Brad Houser]

"John T" <jt@his.isp> wrote in message
news:41e5c5cb$0$12690$9a6e19ea@news.newshosting.co m...
> "Brad Houser" <bradDOThouser@intel.com> wrote in message
> news:cs409k$ga3$1@news01.intel.com
> >
> > There is no single conductor
> > signalling method that would work with off the shelf hardware. You
> > would either have to convert the three component video streams into
> > some modulated rf streams at different "channels" and convert them
> > back to baseband at the other end, or somehow digitize the signal and
> > send it as a high bitrate digital stream to the receivers. Neither of
> > these technologies exist today (at least if they do they are not
> > going to be cheap), but it could some day be affordable!
>
> The way I see it, this is akin to cable Internet. I'm no electrical
> engineer (software engineer, though) so I'm definitely open to an
education,
> but it seems that there must be a way to convert the 5 analog inputs
> (Y/Pr/Pb video, left/right audio) into five different frequencies way up
in
> the spectrum then pull them back out on the other end. In my case, it
could
> be low, middle or high since the only signal sent on these runs would be
> this HDTV signal. Or, as you say, convert the five signals into a digital
> bitstream then send that over the wire.

The analog route would the equivalent of modulating 3 20MHz TV channels and
one FM radio station. Do-able, but not cheap. The digital route would
require digitizing the high bandwidth analog signals in real time, the
equivalent of your own HDTV transmitter. Also not cheap. With the advances
in silicon technology, some day we will be able to do this.

Brad Houser
(not speaking for Intel)

Whats so complex about running componet? Compared to the alternative its an
absolute breeze
"Brad Houser" <bradDOThouser@intel.com> wrote in message
news:cs409k$ga3$1@news01.intel.com...
>
> "John T" <jt@his.isp> wrote in message
> news:41e56f41$0$12729$9a6e19ea@news.newshosting.co m...
> > Scenario:
> > DishNetwork 921 receiver (HDTV tuner built-in)
> > Sanyo PLV-Z2 projector
> > Toshiba 23HL84 LCD HD-ready TV
> > (soon) Another flat TV (at least HD-ready, possibly built-in tuner)
> >
> > There is a run of component video between the receiver and the
> > projector (this isn't my problem, just putting it here for
> > completeness). There is a run of RG6 coax from the receiver to a
> > coax splitter which then feeds RG6 coax to the Toshiba TV (and the
> > location of the soon-to-be-installed TV).
> >
> > What I want to do is get HD output from the receiver to the Toshiba
> > and other TV. Running component cables to the locations of the TVs
> > is not an option I want to consider due to the complexity of the
> > run(s).
> >
> > Is there a way to get component video with 2-channel stereo (no need
> > for Dolby) onto coax then back into component video and stereo? Is
> > there another option that doesn't require new runs of cable?
>
> If you figure out a way to do this with one cable, I am sure a lot of
people
> would love to hear about it. There is no single conductor signalling
method
> that would work with off the shelf hardware. You would either have to
> convert the three component video streams into some modulated rf streams
at
> different "channels" and convert them back to baseband at the other end,
or
> somehow digitize the signal and send it as a high bitrate digital stream
to
> the receivers. Neither of these technologies exist today (at least if they
> do they are not going to be cheap), but it could some day be affordable!
>
> Brad Houser
> <not speaking for Intel>
>
>
>

[John T]

<steve99@bellsouth.net> wrote in message
news:eEEPd.605$d%2.32@bignews5.bellsouth.net
>
> Whats so complex about running componet? Compared to the alternative
> its an absolute breeze

It's not a matter of complexity, but rather desire to avoid having to
cut/repair drywall over the course of the 50-75 foot runs. There is no
conduit between my receiver and remote TVs and all the joists run across the
route I'd have to pull the cable.

No, it's not complex, but it's still a major PITA. :)

--
John T
http://tknowlogy.com/TknoFlyer
http://www.pocketgear.com/products_search.asp?developerid=4415
____________________