VGA to COmponent Video....

Hi;

I have searched many forums and can't really get a straight answer on this.
I recently bought a used Panasonic tele that displays 1080i through
component video inputs (Y/Pb/Pr). I need to connect my PC's VGA out (15
pin) to the component in of the TV to hopefully watch video in 1080i. The
local electronic shop has a cable that appears to do this. My questions
a

1. Will this cable do what I want?
2. My computer also supports 1920x1080 resolution. Is this what it needs
to be set to?
3. Is there anything else I need to change on the television or computer to
accomplish this?

Thanks;
Steve

Steve wrote:
Hi;

I have searched many forums and can't really get a straight answer
on this.
I recently bought a used Panasonic tele that displays 1080i
through
component video inputs (Y/Pb/Pr). I need to connect my PC's VGA
out (15
pin) to the component in of the TV to hopefully watch video in
1080i. The
local electronic shop has a cable that appears to do this. My
questions
a

1. Will this cable do what I want?
2. My computer also supports 1920x1080 resolution. Is this what
it needs
to be set to?
3. Is there anything else I need to change on the television or
computer to
accomplish this?

Thanks;
Steve

I believe the VGA cable carries RGB video. To make component requires
at least 1 amplifier to invert the 'Y' (luminance) signal to get R-Y
and B-Y. To do a _good_ job it would be better to have active line
drives for the outputs to properly match the transmission line (video
cable). A medium level hobbyist _could_ construct such a beast but
you'd have better luck with a commercially built box. FWIW, I've
designed such gadgets as part of larger projects for several
employers.

GG

Hmmm....interesting. Probably something I would be more inclined to buy.
It's strange but lots of computer/electronic retailers are selling such
cables.

I do have a computer or two kicking around with DVI outputs. Are there any
options I can explore with going from DVI to Component video that might be
cheaper (eg. just a cable)? I just want to watch some high def on my tv
without buying an HD DVD player or HD sat receiver.

Thanks;
Steve


"G-squared" wrote in message
...
Steve wrote:
Hi;

I have searched many forums and can't really get a straight answer
on this.
I recently bought a used Panasonic tele that displays 1080i
through
component video inputs (Y/Pb/Pr). I need to connect my PC's VGA
out (15
pin) to the component in of the TV to hopefully watch video in
1080i. The
local electronic shop has a cable that appears to do this. My
questions
a

1. Will this cable do what I want?
2. My computer also supports 1920x1080 resolution. Is this what
it needs
to be set to?
3. Is there anything else I need to change on the television or
computer to
accomplish this?

Thanks;
Steve

I believe the VGA cable carries RGB video. To make component requires
at least 1 amplifier to invert the 'Y' (luminance) signal to get R-Y
and B-Y. To do a _good_ job it would be better to have active line
drives for the outputs to properly match the transmission line (video
cable). A medium level hobbyist _could_ construct such a beast but
you'd have better luck with a commercially built box. FWIW, I've
designed such gadgets as part of larger projects for several
employers.

GG

"Steve" wrote in message
...
Hi;

I have searched many forums and can't really get a straight answer on
this. I recently bought a used Panasonic tele that displays 1080i through
component video inputs (Y/Pb/Pr). I need to connect my PC's VGA out (15
pin) to the component in of the TV to hopefully watch video in 1080i. The
local electronic shop has a cable that appears to do this. My questions
a

1. Will this cable do what I want?
2. My computer also supports 1920x1080 resolution. Is this what it needs
to be set to?
3. Is there anything else I need to change on the television or computer
to accomplish this?

No, the cable will not work. The cable is actually RGB and is meant for
connections to projectors.

You have three options:
1) buy a convertor box like GG mentioned. A cheapo one:
http://www.newegg.com/Product/Produc...82E16817707073
2) connect the DVI video card equipped computer you have to an A/V receiver,
and then connect that to your TV via component.
3) use a media extender like an XBOX 360, PS3, etc to interface between the
HDTV and computer.

steveo

On Dec 17, 8:27 pm, "Steve" wrote:
Hmmm....interesting. Probably something I would be more inclined
to buy.
It's strange but lots of computer/electronic retailers are selling
such
cables.

I do have a computer or two kicking around with DVI outputs. Are
there any
options I can explore with going from DVI to Component video that
might be
cheaper (eg. just a cable)? I just want to watch some high def on
my tv
without buying an HD DVD player or HD sat receiver.

Thanks;
Steve

"G-squared" wrote in message
snip
I believe the VGA cable carries RGB video. To make component
requires
at least 1 amplifier to invert the 'Y' (luminance) signal to get
R-Y
and B-Y. To do a _good_ job it would be better to have active
line
drives for the outputs to properly match the transmission line
(video
cable). A medium level hobbyist _could_ construct such a beast
but
you'd have better luck with a commercially built box. FWIW, I've
designed such gadgets as part of larger projects for several
employers.

GG

DVI is an interesting 'mess' in that it includes digital _and_ analog
in the same connector. The analog portion is RGB, pretty much the same
as the VGA connector. The digital would need to be converted to
component and is more complex though possibly cheaper than the analog
RGB to component conversion.

It gets 'worse' when you look for the adaptor and find something like
this.

http://sewelldirect.com/dvivideoadapter.asp

Notice in line 6 of the overview

"Take advantage of your computer's high quality DVI
video capabilities with this adapter that allows you to
view your DVI source on a component HDTV display.
From your computer's DVI, watch DVDs, play games, surf
the internet, view streaming video and more on your HD
projector, HDTV, or other HD display that uses RGB
video. A built-in dip switch allows you to select the"

It clearly states RGB video but is billed as a 'component' adaptor. Be
sure to read the "fine print"

GG

On Mon, 17 Dec 2007 21:34:54 -0500, Steve wrote:

Hi;

I have searched many forums and can't really get a straight answer on
this. I recently bought a used Panasonic tele that displays 1080i
through component video inputs (Y/Pb/Pr). I need to connect my PC's VGA
out (15 pin) to the component in of the TV to hopefully watch video in
1080i. The local electronic shop has a cable that appears to do this.
My questions a

1. Will this cable do what I want?
2. My computer also supports 1920x1080 resolution. Is this what it
needs to be set to?
3. Is there anything else I need to change on the television or
computer to accomplish this?

You could buy a MB that has component out. My Asus socket AM2 MB does.





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Tivo HD/S3 compared http://wesnewell.no-ip.com/mythtivo.htm
AMD cpu help http://wesnewell.no-ip.com/cpu.php

Steve wrote:
Hmmm....interesting. Probably something I would be more inclined to buy.
It's strange but lots of computer/electronic retailers are selling such
cables.

I do have a computer or two kicking around with DVI outputs. Are there any
options I can explore with going from DVI to Component video that might be
cheaper (eg. just a cable)? I just want to watch some high def on my tv
without buying an HD DVD player or HD sat receiver.

Thanks;
Steve


"G-squared" wrote in message
...
Steve wrote:
Hi;

I have searched many forums and can't really get a straight answer
on this.
I recently bought a used Panasonic tele that displays 1080i
through
component video inputs (Y/Pb/Pr). I need to connect my PC's VGA
out (15
pin) to the component in of the TV to hopefully watch video in
1080i. The
local electronic shop has a cable that appears to do this. My
questions
a

1. Will this cable do what I want?
2. My computer also supports 1920x1080 resolution. Is this what
it needs
to be set to?
3. Is there anything else I need to change on the television or
computer to
accomplish this?

Thanks;
Steve
I believe the VGA cable carries RGB video. To make component requires
at least 1 amplifier to invert the 'Y' (luminance) signal to get R-Y
and B-Y. To do a _good_ job it would be better to have active line
drives for the outputs to properly match the transmission line (video
cable). A medium level hobbyist _could_ construct such a beast but
you'd have better luck with a commercially built box. FWIW, I've
designed such gadgets as part of larger projects for several
employers.

GG




I have tried DVI from an Acer laptop (5672WLMI) to my CRT 1080i HDTV
using DVI/component cable (ordered for Xbox) AND DVI/HDMI. Both work but
DVI/HDMI was cleaner. DVI/component was not as clear and had to much
overscan. Both were just cables no convertion. Also my Acer didn't seem
to want to put out 1080i (X1400 graphics with 512ram dedicated) or maybe
I just could not find 'interlaced' in the driver software, so I set it
to 1280 x 720p and it worked just fine. I use the DVI/HDMI cable to show
jpegs from time to time.
-Mike

Meh, seems like a bigger mess than it's worth. The VGA-- Component cost
tells me I sould maybe get a different DVD player. Now that raises some
more questions. I'll make it a new thread.

Cheers;
Steve
"Steve" wrote in message
...
Hmmm....interesting. Probably something I would be more inclined to buy.
It's strange but lots of computer/electronic retailers are selling such
cables.

I do have a computer or two kicking around with DVI outputs. Are there
any options I can explore with going from DVI to Component video that
might be cheaper (eg. just a cable)? I just want to watch some high def
on my tv without buying an HD DVD player or HD sat receiver.

Thanks;
Steve


"G-squared" wrote in message
...
Steve wrote:
Hi;

I have searched many forums and can't really get a straight answer
on this.
I recently bought a used Panasonic tele that displays 1080i
through
component video inputs (Y/Pb/Pr). I need to connect my PC's VGA
out (15
pin) to the component in of the TV to hopefully watch video in
1080i. The
local electronic shop has a cable that appears to do this. My
questions
a

1. Will this cable do what I want?
2. My computer also supports 1920x1080 resolution. Is this what
it needs
to be set to?
3. Is there anything else I need to change on the television or
computer to
accomplish this?

Thanks;
Steve

I believe the VGA cable carries RGB video. To make component requires
at least 1 amplifier to invert the 'Y' (luminance) signal to get R-Y
and B-Y. To do a _good_ job it would be better to have active line
drives for the outputs to properly match the transmission line (video
cable). A medium level hobbyist _could_ construct such a beast but
you'd have better luck with a commercially built box. FWIW, I've
designed such gadgets as part of larger projects for several
employers.

GG

"Steve" wrote in message
...
Hi;

I have searched many forums and can't really get a straight answer on
this. I recently bought a used Panasonic tele that displays 1080i through
component video inputs (Y/Pb/Pr). I need to connect my PC's VGA out (15
pin) to the component in of the TV to hopefully watch video in 1080i. The
local electronic shop has a cable that appears to do this. My questions
a

1. Will this cable do what I want?
2. My computer also supports 1920x1080 resolution. Is this what it needs
to be set to?
3. Is there anything else I need to change on the television or computer
to accomplish this?

Thanks;
Steve

1. Maybe not, the cable is just a passive VGA connector to RCA plug adapter,
it doesn't change the signals. VGA is RGB each wire carries a red image, a
blue image and a green image which are combined to make the picture,
component carries the color signals in an additive/subtractive format
Luminance (Y), blue - Y (Pb), and red-Y (Pr). The TV combines these and gets
the (hidden) green channel. This subtraction knocks out any noise common to
signals and strangely requires less bandwidth than RGB. So, you need some
simple electronics to convert one to the other, not a passive cable OR you
need a PC graphics card that can output YPbPr component signals instead of
raw RGB.

2. 3. Again, the component vs RGB problem above.