Article View: sci.electronics
Article #9326Re: How does MacroVision CopyGuard work?
From: Ben Feen
Date: Mon, 07 Jan 1991 00:35
Date: Mon, 07 Jan 1991 00:35
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In article <35277@netnews.upenn.edu> jliu@pender.ee.upenn.edu (Dear John.) writes: > >I'm curious....does anyone know how MacroVision copy protection works? >Can someone please email me recent sci.e articles on it? > My guess is that 'they' tune the picture until it's on the edge of distortion, so that when you copy the tape, the added resistance destroys the picture completely. -- whos@ddsw1.MCS.COM | I don't know, who's at DDSW1? | whos@ddsw1.MCS.COM! I asked YOU who's at DDSW1! Ok, there's a guy at DDSW1, right? | Right! Who? | Exactly! | What? | No, he's at lll-winken. | Where? | No, What! | I don't know! | He's at gargoyle. | Who? | No, he's at DDSW1.MCS.COM!
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!att!linac!midway!gargoyle!ddsw1!whosReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!att!linac!midway!gargoyle!ddsw1!whos From: whos@ddsw1.MCS.COM (Ben Feen) Newsgroups: sci.electronics Subject: Re: How does MacroVision CopyGuard work? Keywords: An Answering machine work w/ a modem on PC Message-ID: <1991Jan07.003508.21161@ddsw1.MCS.COM> Date: 7 Jan 91 00:35:08 GMT References: <1411@umvlsi.ecs.umass.edu> <35277@netnews.upenn.edu> Reply-To: whos@ddsw1.MCS.COM (Ben Feen) Distribution: sci.electronics Organization: ddsw1.MCS.COM Contributor, Wheeling, IL Lines: 13