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From: lauren@vortex.UUCP (Lauren Weinstein)
Newsgroups: net.video
Subject: Re: Vertical blanking information on commercial tapes
Message-ID: <732@vortex.UUCP>
Date: Sat, 3-Aug-85 00:33:21 EDT
Article-I.D.: vortex.732
Posted: Sat Aug  3 00:33:21 1985
Date-Received: Mon, 5-Aug-85 07:33:54 EDT
References: <1638@orca.UUCP>
Organization: Vortex Technology, Los Angeles
Lines: 4

Yes, those logos in the vertical interval are part of 
tape/ID/copy-protect systems.

--Lauren--