Re: Help with Video Overlay Card??

[Joseph Lee <nuNOUBEgundam@netNOUBEcom.hotmail.com>]

Jeff Blakeney <jefbla@bconnex.net> spawned virtual particles writing:
: On Sat, 13 Sep 1997 10:55:15 +1000, Dave Morrison <deth@magna.com.au>
: wrote:

: >What I get is the image from the video popping up on the gs screen for
: >a fraction of a second, disappears for a couple of seconds, then pops
: >up on the screen again, disappears and so forth.

: I have had this behaviour from my VOC when the incoming video signal
: has been weak or noisy.  For example, using my old Beta Hi-fi to send
: video to the VOC, the VOC will not display the video correctly
: whenever I cue forward or reverse or when I pause.  This is because
: the Beta puts all kinds of noise through the screen and the sync
: signals seem to go pretty wacko.

This happens when the VOC gets no video sync with the video's vertical
blank signal.  The VOC automatically disables when it doesn't detech a
valid vblank signal.  The disabling and enabling of sync will disrupt the
Apple display for a second.  So, when you FF/REW on a vcr, it does not give
valid video-sync signals unless you're running it through a TBC.
-- 
Joseph nugundam =netcom=com/==\=IIGS=/==\=Playstation=/==\=Civic HX CVT=/==\
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