Path: utzoo!attcan!uunet!portal!cup.portal.com!Chad_The-Walrus_Netzer
From: Chad_The-Walrus_Netzer@cup.portal.com
Newsgroups: comp.sys.amiga
Subject: Re: FlickerFixers
Message-ID: <7977@cup.portal.com>
Date: 8 Aug 88 00:42:20 GMT
References: <3269@crash.cts.com> <8473@swan.ulowell.edu>
Organization: The Portal System (TM)
Lines: 40
XPortal-User-Id: 1.1001.2959

In a previous article, <Bob Page> blunders... er, writes:
)haitex@pnet01.cts.com (Wade Bickel) wrote:
)>But I really don't like the way objects in motion split
)
)This is crap, Wade.  The artifact you're seeing (I assume you've
)actually LOOKED at a flickerFixer) has nothing to do with fF, it's the
)Amiga.  Put your stock Amiga with 1080 monitor in interlace mode
)and it does the same thing.  You might not notice it because of all
)the flickering, but it's there.  All flickerFixer does is stop the
)display from flickering, and now you can notice the "motion split."

	I'm sory to say that this is WRONG, Bob.  What the Flicker Fixer does
is buffer the last frame, and then displays that frame one more time, so that
the scan lines that would have faded by 1/30th of a second, are shown again.
The magical result is no flicker.  This make static images look GREAT
(ESPECIALLY on a Zenith Flat Screen Monitor, by the way).  However, since that
last frame is displayed once more, if the current frame is significantly
different from the last frame, you will see "lines" left over where the object
was.  A simple way to demonstrate this is to move the mouse pointer
semi-rapidly on the screen.  You will clearly see those left over lines...  It
is not caused by the monitor, or in the way your eye/brain interprets the
interlace (as you state), but is a result of something which otherwise would
have faded being re-displayed...
	I suggest YOU go take another good look at the Flicker Fixer, before
you call anyone else's words (namely Wade's) "crap"...  I myself have seen the
Flicker Fixer numerous times, on at least three different brands and models,
and have always seen the same effect.  I also listened when the FF's operating
principals were discussed...
	Anyway, this message is NOT meant to be a bad review for the Flicker
Fixer... It does a GREAT job of what it is SUPPOED to do, which is provide
flicker free output (which makes CAD, desktop publishing, etc. MUCH more
tolerable).  But if you want to do a lot of animation, you might not like
it... or if you do both, all it takes is a cable move, or a switch to go
between the two modes (flicker <--> Flicker Fixer).
	PS.  In case your wondering, I use interlace all the time, with just a
standard 1080.  I just pick the right color set, and it doesn't bother me one
bit...
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
			Chad 'The_Bloodshot' Netzer -> AmigaManiac++
"Carpenters use a Crowbar; Drivers use a Rollbar;Hackers just need a Foobar."