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From: jbn@wdl1.UUCP (John B. Nagle)
Newsgroups: net.micro
Subject: Copy protection schemes
Message-ID: <238@wdl1.UUCP>
Date: Thu, 10-May-84 23:05:49 EDT
Article-I.D.: wdl1.238
Posted: Thu May 10 23:05:49 1984
Date-Received: Sun, 13-May-84 08:24:51 EDT
Lines: 6


     Please, no "soft bits" copy protection schemes.  It's certain to cause
reliability problems.  There used to be "copy protected" video tapes with
weak vertical sync pulses.  It didn't work; the picture would roll on some
TV sets.  Copy protectors, put any pattern you like out there, maybe one the
user's hardware can't write, but put it out there solidly.