[mythtv-users] VGA to component cables
dave at optionsdsl.ca
Fri Jan 5 11:55:18 UTC 2007
A good rule of thumb is, that if its just a cable, its not doing any
conversion, Coverters need power, electronics.
You cant take one of these cables and watch your DVD player on your
Component != RGB/VGA anywhere in the world.. Its a color difference
signal, You get some red, and you get some blue, and the "difference"
is green! A lot less bandwidth!
> On 5 Jan 2007, at 05:01, Ow Mun Heng wrote:
>> On Fri, 2007-01-05 at 15:55 +1100, Bill Williamson wrote:
>>> On 1/5/07, Ow Mun Heng <Ow.Mun.Heng at wdc.com> wrote:
>>>> Y not try some DIY 1st???
>>> That will not do what he wants. That takes component and then allows
>>> it to be displayed on devices which have a "VGA" plug (HD15) which
>>> ALSO accepts component (usually projectors). It's a DIY version of
>>> this: http://store.infocus.com/escalate/store/DetailPage?
>>> It does NOT do the opposite (take a standard VGA signal and output it
>>> in component)
>> Woooo... My Bad.. I really thought it was doing the opposite.
> Actually, it SAYS it is doing the opposite:
> Will I be able to use the VGA to component adapter to watch DVD's
> from my DVD player on my computer monitor?
> Probably not, the adapter just "adapts" it doesn't convert. Nearly
> all computer monitors need an RGB signal, as compared to the
> (Y, Pr, Pb) signal that a DVD player outputs. To view a component
> signal on an RGB monitor requires a transcoder, which converts the
> component to an RGB signal. Many projectors and some rare monitors
> will accept a compent signal via their HD-15 (VGA or RGB) port.
> This is the intended use for this adapter. Bottom line: For the
> adapter to work your display device must accept component inputs.
> Will I be able to use the VGA to component adapter to watch my
> computer on my big screen TV?
> You can connect your PC to your wide screen TV if either the TV has
> an RGB (HD-15 or 5 RCA) input or if your computer can output its
> signal in component. Some video cards can do this natively (some
> ATI) or via a "dongle" (most Radeon cards), some NVIDIA cards have
> component output also. Bottom line: you'll have to check the specs
> of your video card. If there is no RGB input on the TC or component
> output from the video card, you'll need to get an RGB to Component
> transcoder, or scan converter (really two names for the same thing).
> I think the cause of the confusion is that he talks about "component"
> and shows "YPbPr" in his diagram, yet VGA actually produces RGB (as I
> understand it) ... and the author also refers to RGB in his VGA
> convertor article.
> Component != RGB, although I appreciate this is better understood by
> home-theatre buffs in the UK & Europe than elsewhere.
> I believe this kind of homebrew cable is better described in the
> articles at:
> Compare the pin-to-pin connections in these links to those in the
> diagram you linked to.
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