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From: userDANC@mts.ucs.UAlberta.CA (unknown)
Newsgroups: sci.electronics
Subject: VCR copy protection
Message-ID: <1923@mts.ucs.UAlberta.CA>
Date: 14 Nov 90 03:34:42 GMT
Organization: MTS Univ of Alberta
Lines: 7

Is anyone aware if a scheme exists to 'copy protect' commercial
VHS tapes?  In running a recent tape through a second video recorder,
it looked as if the signal had become scrambled, though viewing it on
a normal television worked fine.  As a second year Electrical Engineering
student, I would be very curious in learning the details of the protection
scheme.  (looks like I have a bit of catching up to do).
Dan