RCA video + VGA monitor output?

D Faust

What are the advantages of VGA over RCA and vise versa.· I am looking into the prop and I see these two ways of outputting video.· I see that VGA uses more IOs.· Thanks.

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Leon

You should get a more stable and better quality image.

Leon


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D Faust

With which, VGA?

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Ken Peterson

@D Faust:

By RCA I assume you mean NTSC/PAL otherwise known as CVBS or Composite Video.

Composite video has definite disadvantages in both color and resolution. Since the color information is multiplexed with the luminance information, the two interact with one another and cause some distortion in the final image (read about CVBS and VGA on www.wikipedia,com). Also, since color information is phase modulated on a 3.58MHz carrier, there are limits to the horizontal resolution you can obtain with CVBS. VGA sends Red, Green, and Blue on separate channels and are directly amplitude modulated, so color gamut, accuracy, and resolution are much better. Also, higher pixel resolutions can be defined with VGA, although standards "VGA" is defined as 640x480 pixels.

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D Faust

Thanks,

I would probably just want to display some text for debugging purposes, would this be a problem?

Which one is more code intensive?


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END 

Ken Peterson

TV (CVBS) is easier and more straight forward. It depends on what you are using for a display, however. If you are using a TV or Composite monitor, use the TV object. If you are trying to use a computer monitor, you will need to use VGA.

My LCD monitor has PIP with composite video input. I find that extremely handy for development.

If you are just trying to debug, you might want to look into PropTerminal as well. I think it's in the Object Exchange.

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The more I know, the more I know I don't know.· Is this what they call Wisdom?

Post Edited (Ken Peterson) : 9/29/2007 1:54:50 PM GMT

D Faust

Thanks, that is what i was looking for.

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LOOKDOWN ThisThread, [noparse][[/noparse]Your_?, My_?, Cool_Thing], looknum
LOOKUP looknum, [noparse][[/noparse]1, 2, 3], subnum
ON subnum GOTO Hope_this_helps, Thanks!, WOW!!
END