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HDMI to RGB cable?

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Old 02-26-2006, 08:40 AM   #16  
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We've covered the legal issues inb prior posts - the question on the table really was how to convert VGA/RGB to Component.
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Old 02-26-2006, 09:17 AM   #17  
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Thanks. I have 2 digital optical and a coaxial digital input on my older Onkyo HT-R500 surround sound receiver - can I hook up the Direct TV HD receiver to it?
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Old 02-26-2006, 12:57 PM   #18  
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Those are audio connections and the answer is yes if you have coaxial/optical outputs on your HD receiver.
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Old 02-26-2006, 03:40 PM   #19  
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Quote:
Originally Posted by Rainor
We've covered the legal issues inb prior posts - the question on the table really was how to convert VGA/RGB to Component.
Sorry - I misunderstood the title of the thread - just trying to be helpful with the redundant but pertinent information - primarily for the OP - has his question already ben answered by you or others? my answer for his question was -
Quote:
you can convert Component to RGB - easily - most PC projectors do it for you.- maybe your tv has a menu switch for component vidoe to the RGB input -- you just need an cheap adapter for the connectors. - or you can easily make one for $5 from diagrams over the net and in projector user manuals. e.g. Sharp -Notevision -pdfs-
- now what does the OP (not Rainor) still really want? -- a diagram? -
if that's it ---
It's RGB(1) > Pr (Red), RGB(2) > Y (Green), RGB(3) > Pb (Blue), RGB (6) > Red Shield (GND), RGB(7) > Green Shield(GND), RGB(8) > Blue (GND) - and before some wizard posts assuming I am ignorant of this fact - No they are not the same signals - they will need to be comverted in the set or with a converter from Component to RGB since of course you are feeding Component video into a RGB 15pin mini-D connector that may or may not know what to do with it -

or does he want lots of technical reasoning?
Quote:
From Wikipedia, the free encyclopedia http://en.wikipedia.org/wiki/YUV
...The YUV model defines a color space in terms of one luminance and two chrominance components. YUV is used in the PAL and NTSC systems of television broadcasting, which is the standard in much of the world.
YUV models human perception of color more closely than the standard RGB model used in computer graphics hardware, but not as closely as the HSV color space.
Y stands for the luminance component (the brightness) and U and V are the chrominance (color) components. The YCbCr or YPbPr color space, used in component video, is derived from it (Cb/Pb and Cr/Pr are simply scaled versions of U and V), and is sometimes inaccurately called "YUV". The YIQ color space used in the NTSC television broadcasting system is related to it, although in a more complex way.
YUV signals are created from an original RGB (red, green and blue) source. The weighted values of R, G and B are added together to produce a single Y signal, representing the overall brightness, or luminance, of that spot. The U signal is then created by subtracting the Y from the blue signal of the original RGB, and then scaling; and V by subtracting the Y from the red, and then scaling by a different factor. This can be accomplished easily with analog circuitry.The following equations can be used to derive Y, U and V from R, G and B:
Y = 0.299R + 0.587G + 0.114B
U = 0.492(B − Y)
= − 0.147R − 0.289G + 0.436B
V = 0.877(R − Y)
= 0.615R − 0.515G − 0.100B
or using matrices
or does he want just a legal opinion---
I assume by "We've covered the legal issues inb prior posts " you were referring to this clarity [QUOTE]Rainor Quote:
Quote:
There is no need to up/down convert 720p/1080i IN and OUT. If you're doing something like 720p/1080i UPCONVERSION to 1080p... Now you are into expensive video processors which upconvert and process the HDCP signals (again never stripping them - that's illegal).

Last edited by maicaw; 02-26-2006 at 04:04 PM..
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Old 02-26-2006, 06:31 PM   #20  
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maicaw - just read the initial post and you'll find out what chris20 wanted help with.
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Old 02-26-2006, 07:37 PM   #21  
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Quote:
Originally Posted by Rainor
maicaw - just read the initial post and you'll find out what chris20 wanted help with.
Guess I just can't get it - so explain - no not really -- I don't give a rat's ass what you think the thread is about -
So - my rhetoric question is - after 8 replies by you in this thread -let us all in on THE RIGHT ANSWER according to Rainor
Quote:
Rainor - post #15 --the question on the table really was how to convert VGA/RGB to Component
you have the audacity to suggest only you have THE answer to his initial question- well then go for it - let's all hear it - or stop butting in - while someone else tries to answer his question unless you have pertinent information to offer.
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Old 02-26-2006, 07:54 PM   #22  
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Quote:
Originally Posted by chris20
I have an older RCA HD TV and just got Direct TV HD. Do they make an HDMI to RGB cable? I can't seem to find one online. My "component input" on the TV is already taken up by the DVD player. Maybe an A/B switch to satisfy both?

Would I be better off running the HDMI cable into my surround sound reciever?

Thanks.
My buddy has an old Sony and a similar issue. He has 5 video inputs, and only one of them is for HD. (Video 5).

Is ur DVD player an HD DVD? I would imagine ur TV has more than one set of inputs (if not, I apologize).

For his, all we had to do is run component, no way to use HDMI. I don't think the picture quality is all that different IMO anyway.

If u only have 1 set, then yeah.. an A/B would work just fine. Simple component cables will do the job.
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Old 03-01-2006, 12:05 PM   #23  
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It's just a progressive scan DVD and my older RCA TV has 3 video inputs but just 1 component input which is currently being used by that DVD player.

I agree with you that after hooking up the HD receiever to the component input (unplugging the DVD player) on the TV that you can't tell the difference between the HD and regular channels - bummer.

I'm waiting to get the a component to RGB/VGA cable that I ordered on EBAY to see if that makes adifference.

When I had Time Warner cable and hooked that box to the component input on my TV the HD stations looked awesome - can't figure out why I don't get the same quality with the Direct TV HD box.

Thanks.
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Old 03-01-2006, 12:48 PM   #24  
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Quote:
Originally Posted by chris20
When I had Time Warner cable and hooked that box to the component input on my TV the HD stations looked awesome - can't figure out why I don't get the same quality with the Direct TV HD box.

Thanks.
I think because for now, Directv's HD content is simply encoded at a lower quality overall - due to space-segment limitiations on their 3 MPEG-2 birds. I hope it gets better when MPEG-4 switch-over is finished.

A good test now is to watch ESPN-HD content on a big venue game. ESPN broadcasts are usually very good, even on Directv. I could see a definate difference on ESPN Sunday Night Football.
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Old 03-02-2006, 03:54 PM   #25  
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Finally got it all working! Used the new component to VGA cable I bougt on EBAY and then needed to set my old RCA TV to "High Resolution" and voila..........HD TV.

The problem with the ESPN HD channels was resolution because of my old TV - changed a few setings and now everything works.

Thanks again to all for allthe great info.
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Old 09-28-2008, 08:33 PM   #26  
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Great News! I had the same problem, but both Sony and Nintendo just fixed this for us! Both the P.S. 3 and the Nintendo Wii us this exact cable!!!! It is HDMI at one end, and 5 RCA type jacks at the other, gold plated and 8 or 10 feet, depending on brand. Three leads are R, G and B, the other two are R and L audio. Price is around $15-20 around the web, got mine from NewEgg(dot)com for $19.99. Best of luck! Mike
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Old 12-21-2016, 04:37 AM   #27  
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Default Hmm Dont think you have done your research quite as well as you think.

They do make a cable to convert from rgb to hdmi, not sure if it will work in reverse situation. Haven't had the chance to try this in reverse.
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