Interlace (again)
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There are a few questions I'd like answered once and for all, if anyone here
is knowledgeable on the topic of video signal processing. I understand the
fun- damentals involved with the Amiga's interlaced video mode.
However, I understand that a standard television uses the same principles
for generating its display, and yet there is (normally) no flicker noticeable
on a television screen. The only thing I can figure is that a tv uses a
longer-persistance phosphur than the standard Amiga monitor (model 1080).
This would imply that using composite video output from the Amiga with a
television would provide a flicker-free display, although without the clarity
of the RGB display. Has anybody tried this?
Now here's the interesting part… While conferencing last Sunday night,
an AmigaForum member (I believe it was Seth — sorry, Seth, I don't know your
last name) mentioned that he had overcome the flicker problem on his 1080
monitor. He said that he'd done this by filtering his video signal through
an "Interlaced Signal Filter" (I believe). Now, I don't understand what this
filter could do to the signal to make it flicker-free. It seems that the
only way around flicker in 640×400 mode on the 1080 would be to draw all 400
lines in one scan (1/60th of a second). On the other hand, if such a
device exists, how does it work? What magic massaging is done to the signal?
Anybody familiar with this stuff? /brent