check it out

From: William Donzelli <>
Date: Sat Aug 14 23:18:32 1999

> Flying spot scanner. Go back about 25-30 years and you could get one for
> test patterns for TV service, B&K was one vendor here in the us. The
> patterns were 35MM slides if memory serves.

It seems to me that maybe, just maybe, if you shine a bright enough image
(with very good contrast) at a stock CRT you could detect the variations
in the beam current. I think this was tried a while back in a CRT
specially made for the application in an early memory device.

William Donzelli
Received on Sat Aug 14 1999 - 23:18:32 BST

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