Xref: utzoo rec.photo:2276 rec.video:3256 sci.electronics:2709
Path: utzoo!mnetor!uunet!lll-winken!lll-tis!ames!ncar!oddjob!uwvax!astroatc!nicmad!brown
From: brown@nicmad.UUCP (Mr. Video)
Newsgroups: rec.photo,rec.video,sci.electronics
Subject: Re: Video inversion (build w/ chips, cheap sources of)
Message-ID: <2556@nicmad.UUCP>
Date: 5 Apr 88 22:52:11 GMT
References: <637@nunki.usc.edu>
Reply-To: brown@nicmad.UUCP (Mr. Video)
Distribution: na
Organization: Mr. Video's Hangout
Lines: 18
Keywords: chips, cheap boxes

In article <637@nunki.usc.edu> cyamamot@nunki.usc.edu (Cliff Yamamoto) writes:
<      [...]                                         All I want it to do is
<take a 75-ohm NTSC video signal w/ negative sync, invert the picture portion
<on the signal while keeping all the sync, color burst, etc. intact, then
<output it.  Essentially I'd like to use my color negatives and move them to
<video by camera but invert all the color/luminance values.

Someone who knows more about color will have to clarify this, but inverting
the video is fine, but you will have to be careful with the color burst
phasing.  Also, something that may get in your way is the orange mask that
is used on all color negs.  It WILL get in the way of the color camera.
You may or may not be able to work it out with a color corrector, which
will need to get the negative color balanced correctly.  So, the end result
is that you may have to spend the $800, as long as the Sony box has color
correction built in as well.
-- 
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