add scanlines to classic consoles displayed on hdtv?

[warmachine]

I posted this question on another forum but didn't get the answers I was looking for.

question

 

I recently got a 40" lcd tv and have been trying to get the best picture

out of all of my consoles.

 

So far, I've got the vga adapter for my dreamcast and component cables

for my xbox. however, I'm stuck on what to do with my genesis/cd/32x combo.

The picture i'm getting out of the genesis on this t.v. through composite cables

is terrible compared to the picture I was getting with my old t.v.

 

Anyway, I thought about getting an scart cable and running it through an

scart to component adapter in order to get pure RGB, but i'm afraid that if

I do that, the resulting video signal will be upscanned and deinterlased by the t.v.

which will cause the picture to look un natural and blocky like it does on my

xbox running the sega genesis emulator.

 

When I apply one of the video filters to the genesis emulator that adds 75% scanlines,

the picture looks more natural, almost like it would on a low rez crt monitor.

It's isn't perfect, but I would be happy if I could do somthing like that to the video signal

before it gets to the t.v. through hardware.

 

The only device that I can find that would add scanlines to a video signal is the XRGB2,

however, it's impossible to find one and it seems kind of expensive considering that

it has a bunch of extra features that I don't need or want.

 

So, is there a device out there that will only add scanlines to my video signal for a reasonable

price ($50-$100), or is the XRGB2 the best I can hope for (if I can find one anyway)?

 

Any ideas?

[Dragnerok X]

Is this what you're looking for?

[warmachine]

I'm looking to achive the opposite of that.

 

I want to turn this

into this

[Dragnerok X]

I'm looking to achive the opposite of that.

 

I want to turn this

into this

 

Why? I myself think the first image looks better.

[supercat]

Why? I myself think the first image looks better.

 

The former may look "better", but the latter is closer to how the game would look on a vintage display.

 

Electronically, the latter should be easier than the former (it could be accomplished with two bucket-brigade devices capable of holding one scan line each, whereas the former approach would require three) but I don't know whether any readily-available devices will perform that task, and the construction of such a device--even given the simplified form (blank alternate scan lines rather than doubling them) would be a major undertaking.