[sdiy] Video-synth DIY ?

[Metrophage]

--- Tony Clark <clark at andrews.edu> wrote:

> It's not difficult to interface to things such as a VGA computer 
> monitor, but is definately trickier to interface to a TV (NTSC/PAL). 
> 
> Timing is everything and there are too many standards, unfortunately!

Wow... since I've always thought of VGA monitors in relation to
computers, it hadn't occured to me that these are analog also. VGA also
offers far better resolution than NTSC does. I don't know how I'd
record, treat, or use video rendered exclusively to a VGA monitor. I'd
rather use one of the standards so I could record and interface to
other gear. I think that one would separate video, process the color,
scan, etc, then put them back together. True, it does sound like a bit
of work.

Some of the older units I have heard of are like elaborate
"wobblevisions", just modulating the X and Y scans, and maybe hue
controls, the resulting video would then be re-recorded into a video
camera. I read somewhere that some people refined this process to
modulating the X and Y scans of a vidicon tube in old video cameras,
that way the camera output was a standard signal.

> I hope to have something to show later this year, but currently I
> have to get a contract manufacturing job completed first before 
> I can devote any time to it.

There are always tradeoffs, like me always having far more time than
money. If your career is doing well you might still beat me to it. Too
bad I didn't gravitate to cheaper interests, like a harmonica or
etch-a-sketch or something. Maybe I'll get a real job someday!

>    BTW, I would be highly interested in any schematics or information
> about classic video synths.  I've scoured the net and haven't really 
> found much...

Same here. So I decided I'd introduce the topic at SDIY, good guess
that more than a few people here had considered this before. Good luck!

CJ


		
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