PAL MD -> RGB Scart -> CSY-2100?

[tomaitheous]

Hi there,

I've recently seen this Youtube video, explaining the benefits of using an RGB cable for the Mega Drive/Genesis, plugging it into an RGB to YUV converter (like the CSY-2100) to get a better picture.

http://www.youtube.com/watch?v=y6xxZ3j5uiM

I noticed that he was using an NTSC console for this video, and I was just wondering if anyone has tried this on a PAL console - Is there an improvement from normal RGB Scart?

Thanks!

From what I can tell, his HDMI source pics are from some other guys TV and his camera, VS this guys TV and his camera. Not really an accurate measure.. at all. There are sooo many variables in that comparison as to why there are differences.

Then there's also the fact even on the same TV, different filtering can and often will be applied to different types of inputs on the TV. It's highly dependent on the TV manufacture and even model version.

Converting it to component isn't going to "improve" it. But given the very low resolution depth of Genesis RGB out, I highly doubt it will even degrade it ( and even then, component analog can go pretty damn high in bandwidth per component signal ). I would also like to get a RGB to component converter without upscaling. Someday :/

[chinitosoccer]

If you transcode from analog to digital to analog and from RGB to YPbPr to RGB you do loose something in the process.

Im not transcoding analog>digital>analog, its just analog>analog, im using a CRT TV with component imputs wich cannot handle digital component,

the RGB scart to YUV converter just takes analog RGB and "converts" it into an analog component signal ( I dont know if the term "convert" apllies here because is not really converting anything) Component is like a clever way RGB for outputing RGB colors, it uses less bandwith.

[tomaitheous]

Im not transcoding analog>digital>analog, its just analog>analog

The RGB to component converter is mostly likely (99.999%) sampling the scaline to capture the RGB data and convert it to component output. I.e. done in the digital realm. I'm not sure how you'd convert the color space and signal any other way. And because there's no "clock source" in the signal itself, there's bound to be some artifacting from that process (digitizing the scanline). How much, I dunno. If one were to make a component converter setup just for the Genesis, they could use the clock line from the one of the internal sources of the system board (to tell where it's running 256 or 320 pixel mode) to get pixel perfect capturing (no artifacts from capturing at a different res than the source resolution).

[Jorge Nuno]

You don't need to do it digitally. Analog circuitry can perform adds/subs/muls/whatever and low cost, too.

If there's no scaling involved, I say that probably 99% of the convertes use an analog approach.


Also you don't have the explicit pixel clock signal on the board. (not, without doing some mods).

[TmEE]

3x dual opamps, some accurate resistors, a sync separator and dual rail power supply = RGB to YUV (or YUV to RGB) transcoder.

[whitespyderzero]

Thanks very much for the helpful advice

Just realised that I never got around to getting an RGB cable for my Mega Drive (got them for all my other consoles but I missed this one for some reason...). I have one arriving tomorow hopefully, so that should be all my consoles RGB'd up and looking gorgeous

[Mur]

Hi everyone,

I've recently bought a SCART to HDMI converter, called HDV-8S, but it introduces horrible input lag, therefore being useless with my good ol' MD.

Anyone having this CSY-2100 could share his input lag tests, and in case if there are any visual issues introduced with this setup?

Thanks!

[Segasocks]

Im finding that a hdtv wired up with scart gives a great image quality but it is clear to see close up that the image is refreshing many times faster than on a crt tv where the slight judering is undetectable.I have discovered this is due to hdtvs not being good with 15htz.I have considered buying an rgb to component but reading this makes me doubt even this will solve my issues.I will probably buy another crt tv with RGB scart because its doing my head in.Hopefully this might help someone out there.
In my experience if you have a sega megadrive get a crt tv and an RGB scart if image quality is everything to you hdtvs suck.