| Author |
Message |
Michael Kennedy
Guest
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 Posted:
Sat Dec 10, 2005 1:40 am Post subject:
YPrPb --> VGA |
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I have a LCD projector that has VGA inputs and a DVD player that has YPrPb
output. I was wondering if it were possible to wire the YPrPb directly to
the VGA port. This probably depends on if the projector supports the non
standard input or not, but I would like to know which pins I would need to
connect the component video to.
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Michael Kennedy
Guest
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| Posted:
Sat Dec 10, 2005 1:40 am Post subject:
Component Vidoe to VGA Monitor |
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I tried hooking the Component video from my dvd player into a VGA cable and
I get a picture in 480p mode but it is Green.
There are no other colors present, just green..
Any ideas??
"Michael Kennedy" <Mikek400@remthis.comcast.net> wrote in message
news:rZWdnarFWYOnkwfeRVn-vg@comcast.com...
| Quote: | I have a LCD projector that has VGA inputs and a DVD player that has YPrPb
output. I was wondering if it were possible to wire the YPrPb directly to
the VGA port. This probably depends on if the projector supports the non
standard input or not, but I would like to know which pins I would need to
connect the component video to.
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Guest
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| Posted:
Sat Dec 10, 2005 7:56 am Post subject:
Re: YPrPb --> VGA |
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I don't believe so. VGA is RGB and YPrPb is luminance, R-Y and B-Y.
There is another hi-def standard that is slightly different. It might
be called YCrBr. I don't know the exact difference in the signals but
when I see a Y at the front I suspect it's also monochrome plus
difference format.
I could build a matrixing circuit to convert it to true RGB, but I
can't do anything about the scan frequencies. Standard progressive scan
from a DVD should be 31.5 Khz by 59.97 Hz. That would produce a raster
with 480 usable lines scanned progressively.
If it has an internal scan converter that can handle this timing, the
other issue might be the native resolution of the projector. If it's
not a multiple of 480 you might have artifacts. Best would be 960, 1440
or 1920 pixels vertical resolution.
If it allows for manual scaling you might get it to look good with
other resolutions by not using the entire "screen".
With all this, it's probably not worth persuing.
Gotta go.
JURB
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Michael Kennedy
Guest
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| Posted:
Sat Dec 10, 2005 8:26 am Post subject:
Re: YPrPb --> VGA |
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I did get my dvd player to work with my VGA monitor (viewsonic pf790) in
480p mode but not 480i. There is one major problem though, the only color
channel working is green. I'm pretty sure I have everything wired correctly,
but there is no color but green.. With the exception of the screen on a
movie preview that is solid blue with green letters that actually should be
white.
I've read this is possible with an xbox at
http://www.xbox-linux.org/wiki/Xbox_VGA_HOWTO
I'm also interested in making my xbox work with my monitor if possible.. I
havn't tried this yet though. I was wanting to get it working with my dvd
player first if possible.
<ZZactly@aol.com> wrote in message
news:1134179814.338952.145640@z14g2000cwz.googlegroups.com...
| Quote: | I don't believe so. VGA is RGB and YPrPb is luminance, R-Y and B-Y.
There is another hi-def standard that is slightly different. It might
be called YCrBr. I don't know the exact difference in the signals but
when I see a Y at the front I suspect it's also monochrome plus
difference format.
I could build a matrixing circuit to convert it to true RGB, but I
can't do anything about the scan frequencies. Standard progressive scan
from a DVD should be 31.5 Khz by 59.97 Hz. That would produce a raster
with 480 usable lines scanned progressively.
If it has an internal scan converter that can handle this timing, the
other issue might be the native resolution of the projector. If it's
not a multiple of 480 you might have artifacts. Best would be 960, 1440
or 1920 pixels vertical resolution.
If it allows for manual scaling you might get it to look good with
other resolutions by not using the entire "screen".
With all this, it's probably not worth persuing.
Gotta go.
JURB
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Dave D
Guest
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| Posted:
Sat Dec 10, 2005 8:32 am Post subject:
Re: YPrPb --> VGA |
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"Michael Kennedy" <Mikek400@remthis.comcast.net> wrote in message
news:rZWdnarFWYOnkwfeRVn-vg@comcast.com...
| Quote: | I have a LCD projector that has VGA inputs and a DVD player that has YPrPb
output. I was wondering if it were possible to wire the YPrPb directly to
the VGA port. This probably depends on if the projector supports the non
standard input or not, but I would like to know which pins I would need to
connect the component video to.
|
Can't be done directly, component video and RGB are completely different
formats. You might get a synced image, but you'll never get all the colours
working.
The difference is explained here:
http://www.projectorcentral.com/component.htm
Dave |
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Dave D
Guest
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| Posted:
Sat Dec 10, 2005 8:39 am Post subject:
Re: YPrPb --> VGA |
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"Dave D" <dave_d@dave_d.com> wrote in message
news:N96dnRkjfM2uowfeRVnyiQ@pipex.net...
| Quote: |
"Michael Kennedy" <Mikek400@remthis.comcast.net> wrote in message
news:rZWdnarFWYOnkwfeRVn-vg@comcast.com...
I have a LCD projector that has VGA inputs and a DVD player that has
YPrPb output. I was wondering if it were possible to wire the YPrPb
directly to the VGA port. This probably depends on if the projector
supports the non standard input or not, but I would like to know which
pins I would need to connect the component video to.
Can't be done directly, component video and RGB are completely different
formats. You might get a synced image, but you'll never get all the
colours working.
The difference is explained here:
http://www.projectorcentral.com/component.htm
Dave
|
Oops, just realised we're discussing a projector, not a VGA monitor. The
above advice still stands *unless* your projector specifically supports
component video via its 15 pin DSUB connector, as some do. If it does, the
best thing to do might be to just buy the proper lead.
Dave |
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Michael Kennedy
Guest
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| Posted:
Sat Dec 10, 2005 9:35 am Post subject:
Re: YPrPb --> VGA |
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I found this... Is there a cheaper way of doing this
http://www.vdigi.com/index.php?option=content&task=view&id=36&Itemid=68
"Dave D" <dave_d@dave_d.com> wrote in message
news:qZidnfQnDJBnogfenZ2dnUVZ8qSdnZ2d@pipex.net...
| Quote: |
"Dave D" <dave_d@dave_d.com> wrote in message
news:N96dnRkjfM2uowfeRVnyiQ@pipex.net...
"Michael Kennedy" <Mikek400@remthis.comcast.net> wrote in message
news:rZWdnarFWYOnkwfeRVn-vg@comcast.com...
I have a LCD projector that has VGA inputs and a DVD player that has
YPrPb output. I was wondering if it were possible to wire the YPrPb
directly to the VGA port. This probably depends on if the projector
supports the non standard input or not, but I would like to know which
pins I would need to connect the component video to.
Can't be done directly, component video and RGB are completely different
formats. You might get a synced image, but you'll never get all the
colours working.
The difference is explained here:
http://www.projectorcentral.com/component.htm
Dave
Oops, just realised we're discussing a projector, not a VGA monitor. The
above advice still stands *unless* your projector specifically supports
component video via its 15 pin DSUB connector, as some do. If it does, the
best thing to do might be to just buy the proper lead.
Dave
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Andy Cuffe
Guest
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| Posted:
Sat Dec 10, 2005 9:35 am Post subject:
Re: YPrPb --> VGA |
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On Fri, 9 Dec 2005 18:08:22 -0500, "Michael Kennedy"
<Mikek400@remthis.comcast.net> wrote:
| Quote: | I have a LCD projector that has VGA inputs and a DVD player that has YPrPb
output. I was wondering if it were possible to wire the YPrPb directly to
the VGA port. This probably depends on if the projector supports the non
standard input or not, but I would like to know which pins I would need to
connect the component video to.
|
You can buy converters for this for around $100-$200. Your DVD player
needs to output progressive scan for it to work with a VGA input. I
use one made by a company called Audio Authority for my video
projector. A few DVD players will output RGB, but these are very
rare. Every DVD player is capable of RGB, but the feature is almost
never enabled.
As others have said, it's a simple task in theory, but building
something that would work well is not a trivial task.
Andy Cuffe
baltimora@psu.edu <-- Use this address until 12/31/2005
acuffe@gmail.com <-- Use this address after 12/31/2005 |
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James Sweet
Guest
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| Posted:
Sat Dec 10, 2005 9:35 am Post subject:
Re: YPrPb --> VGA |
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| Quote: |
Can't be done directly, component video and RGB are completely different
formats. You might get a synced image, but you'll never get all the colours
working.
The difference is explained here:
http://www.projectorcentral.com/component.htm
Dave
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It can be converted though for sure, a TV has to be able to decode it to
RGB afterall, I suspect there's a single chip solution to do most of the
work. |
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Dave D
Guest
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| Posted:
Sat Dec 10, 2005 5:35 pm Post subject:
Re: YPrPb --> VGA |
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"Michael Kennedy" <Mikek400@remthis.comcast.net> wrote in message
news:ld6dnVQETMAlbgfenZ2dnUVZ_sKdnZ2d@comcast.com...
| Quote: | Do you mean RGB as in VGA or YPrPb where it has 3 phono jacks. I need VGA
signal, it is not the exact same thing as RGB.
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RGB as in TV standard RGB, not VGA.
Have you checked the spec of your projector to see if it supports component
video? Some do.
Dave |
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Michael Kennedy
Guest
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| Posted:
Sat Dec 10, 2005 5:35 pm Post subject:
Re: YPrPb --> VGA |
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Do you mean RGB as in VGA or YPrPb where it has 3 phono jacks. I need VGA
signal, it is not the exact same thing as RGB.
"Dave D" <dave_d@dave_d.com> wrote in message
news:b-udnQ3C9agcbwfeRVnyrw@pipex.net...
| Quote: |
"Andy Cuffe" <baltimora@psu.edu> wrote in message
news:8gqkp1hr7ck9vhn6kjac00ui0kd3bg1b7v@4ax.com...
A few DVD players will output RGB, but these are very
rare.
That depends where one lives. In some parts of the world, notably here in
Europe, DVD players without RGB are exceptionally rare.
Dave
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Dave D
Guest
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| Posted:
Sat Dec 10, 2005 5:35 pm Post subject:
Re: YPrPb --> VGA |
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"Andy Cuffe" <baltimora@psu.edu> wrote in message
news:8gqkp1hr7ck9vhn6kjac00ui0kd3bg1b7v@4ax.com...
| Quote: | A few DVD players will output RGB, but these are very
rare.
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That depends where one lives. In some parts of the world, notably here in
Europe, DVD players without RGB are exceptionally rare.
Dave |
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Andy Cuffe
Guest
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| Posted:
Sun Dec 11, 2005 1:35 am Post subject:
Re: YPrPb --> VGA |
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On Sat, 10 Dec 2005 00:08:03 -0500, "Michael Kennedy"
<Mikek400@remthis.comcast.net> wrote:
That's actually a very good price. I paid almost twice that for a
second hand box on ebay a couple of years ago. You can pay more than
that for some video cables these days.
Andy Cuffe
baltimora@psu.edu <-- Use this address until 12/31/2005
acuffe@gmail.com <-- Use this address after 12/31/2005 |
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Andy Cuffe
Guest
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| Posted:
Sun Dec 11, 2005 1:35 am Post subject:
Re: YPrPb --> VGA |
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On Sat, 10 Dec 2005 10:27:29 -0500, "Michael Kennedy"
<Mikek400@remthis.comcast.net> wrote:
| Quote: | Do you mean RGB as in VGA or YPrPb where it has 3 phono jacks. I need VGA
signal, it is not the exact same thing as RGB.
|
VGA is RGB. YPrPb is component video and totally different from RGB
despite the color of the connectors. If you have a player that
outputs RGB, you just need the right cable to connect it to a VGA
device (assuming it's outputting 480p or higher). Most devices with a
VGA connector won't sync to 480i.
Andy Cuffe
baltimora@psu.edu <-- Use this address until 12/31/2005
acuffe@gmail.com <-- Use this address after 12/31/2005 |
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Martin D. Bartsch
Guest
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| Posted:
Sun Dec 11, 2005 1:35 am Post subject:
Re: YPrPb --> VGA |
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On Sat, 10 Dec 2005 10:27:29 -0500, "Michael Kennedy"
<Mikek400@remthis.comcast.net> wrote:
| Quote: | Do you mean RGB as in VGA or YPrPb where it has 3 phono jacks. I need VGA
signal, it is not the exact same thing as RGB.
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VGA is RGB but the RGB frequency is too low for VGA |
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