Charles J Knight wrote:
> 2 things -- why would you need an array for a nipkow device, since they
> are supposed to use a single modulated source per display? Unless
> you intend to build an array of linked displays, like Rehmi did. (4
> displays "on top" of each other, all on the same disk)
I guess this point wasn't clear. Each LED is driven by a separate pixel
stream to create a unique set of scanlines. The little MPEG clip on my page
shows the Nipkow disk built for 4 separate LEDs but actually driven by only
one. In a single revolution of the disk, 4 groups of 32 scanlines are swept
out. Each group is just tall enough to be driven by a few SMT LEDs
side-by-side in a 1206 package.
If you're willing to spend a few bucks, you could just modify my Postscript
code [1] to fill in the disk area with black and then have it rendered to
film at a print shop for a sufficiently opaque mask.
-Rehmi
[1] - linked from http://www.media.mit.edu/~rehmi/rotoscope/
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