Path: utzoo!utgpu!water!watmath!watcgl!awpaeth
From: awpaeth@watcgl.waterloo.edu (Alan W. Paeth)
Newsgroups: sci.electronics
Subject: Component Video Standard -- CCIR601
Keywords: frame store, video disk
Message-ID: <3996@watcgl.waterloo.edu>
Date: 12 Apr 88 15:44:49 GMT
Reply-To: awpaeth@watcgl.waterloo.edu (Alan W. Paeth)
Distribution: sci
Organization: U. of Waterloo, Ontario
Lines: 11

I've noticed that many commercial video frame stores no longer operate
by digitizing the base-band video signal at four times the color subcarrier,
but instead use the "CCIR601" component video standard. Can anyone explain
what this is? From the simple sketches I've seen, it looks like there are
three data channels, which are almost certainly *not* RGB, as one channel
is labellel "luminance", the others "chrominance" (this looks suspiciously
like RGB recoded as YIQ data, but no doubt there is other trickery at work).

    /Alan Paeth
    Computer Graphics Lab
    University of Waterloo