What is this old vfx tech called ?

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Hi everyone,

Years ago I came across a video on YouTube (most likely) that was about old (70s/80s?) CGI technology.

IIRC it was basically a very fancy oscilloscope, took up a whole room and was used mainly to produce 3D titles.

I think it was operated using a bunch of knobs.

My apologies for the limited amount of details, like I said it’s been years…

I hope you can help me scratch that itch, I’ve been trying to find it every now and then but no luck :(

Thanks for reading and for the potential help!

Edit: corrected 60s to 80s

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You could be describing a rotoscope or a modified version of one
https://en.wikipedia.org/wiki/Rotoscoping

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It was really more some kind of oscilloscope that needed to be programmed then it played the whole animation.
I have never heard of that before or after seeing that video and I think it’s a bit of an obscure technology.

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