Re: VGA to Composite

"John Ketchpaw" <[email protected]> Fri, 7 Nov 2008 17:25:49 -0800
Newsgroups gmane.comp.games.mame.advancemame.user
Message-ID <[email protected]>
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if by "tv frequencies" you just mean "pixel clock", then no.  svideo is a
compression of the 3 channel signal down to 2 channels, composite compresses
it down to 1 channel.  it's pretty easy to do in a circuit, but at that
point you might as well crack open your tv and wire a chopped vga cable
right in ;).

If your TV supports component (3 cables), it's probable that this would work
for you: http://www.amazon.com/6ft-component-video-cable-HD15/dp/B000FM3EQ0


On Fri, Nov 7, 2008 at 3:12 PM, Robinson, Eric <eric.robinson-JiDY2OCN/[email protected]>wrote:

> I notice that people are selling VGA to composite cables on eBay for a
> few  bucks.
>
> Examples...
>
> http://shop.ebay.com/items/_W0QQ_dmptZPCAQ5fCablesQ5fAdapters?_nkw=vga+t
> o+tv&_sacat=0&_fromfsb=&_trksid=m270.l1313&_odkw=vga+to+composite%3F&_os
> acat=0<http://shop.ebay.com/items/_W0QQ_dmptZPCAQ5fCablesQ5fAdapters?_nkw=vga+to+tv&_sacat=0&_fromfsb=&_trksid=m270.l1313&_odkw=vga+to+composite%3F&_osacat=0>
>
> If you have a VGA card that does not have a TV out port but can be
> configured to output TV frequencies, would something like this really
> work?
>
> --
> Eric Robinson
>
>
>
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if by &quot;tv frequencies&quot; you just mean &quot;pixel clock&quot;, then no.&nbsp; svideo is a compression of the 3 channel signal down to 2 channels, composite compresses it down to 1 channel.&nbsp; it&#39;s pretty easy to do in a circuit, but at that point you might as well crack open your tv and wire a chopped vga cable right in ;).<br>

<br>If your TV supports component (3 cables), it&#39;s probable that this would work for you: <a href="http://www.amazon.com/6ft-component-video-cable-HD15/dp/B000FM3EQ0" target="_blank">http://www.amazon.com/6ft-component-video-cable-HD15/dp/B000FM3EQ0</a><br>

<br><br><div class="gmail_quote">On Fri, Nov 7, 2008 at 3:12 PM, Robinson, Eric <span dir="ltr">&lt;<a href="mailto:eric.robinson-JiDY2OCN/[email protected]" target="_blank">eric.robinson-JiDY2OCN/[email protected]</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">

I notice that people are selling VGA to composite cables on eBay for a<br>
few &nbsp;bucks.<br>
<br>
Examples...<br>
<br>
<a href="http://shop.ebay.com/items/_W0QQ_dmptZPCAQ5fCablesQ5fAdapters?_nkw=vga+to+tv&amp;_sacat=0&amp;_fromfsb=&amp;_trksid=m270.l1313&amp;_odkw=vga+to+composite%3F&amp;_osacat=0" target="_blank">http://shop.ebay.com/items/_W0QQ_dmptZPCAQ5fCablesQ5fAdapters?_nkw=vga+t<br>


o+tv&amp;_sacat=0&amp;_fromfsb=&amp;_trksid=m270.l1313&amp;_odkw=vga+to+composite%3F&amp;_os<br>
acat=0</a><br>
<br>
If you have a VGA card that does not have a TV out port but can be<br>
configured to output TV frequencies, would something like this really<br>
work?<br>
<br>
--<br>
Eric Robinson<br>
<br>
<br>
<br>
Disclaimer - November 7, 2008<br>
This email and any files transmitted with it are confidential and intended solely for <a href="mailto:advancemame-users-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org" target="_blank">advancemame-users-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org</a>. If you are not the named addressee you should not disseminate, distribute, copy or alter this email. Any views or opinions presented in this email are solely those of the author and might not represent those of . Warning: Although &nbsp;has taken reasonable precautions to ensure no viruses are present in this email, the company cannot accept responsibility for any loss or damage arising from the use of this email or attachments.<br>


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