Re: Scrambling of Pay TV channels

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Article #4209

#4209

From: Steven Bellovin
Date: Mon, 02 May 1988 17:53

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}Does anyone know what types of schemes are used to scramble pay TV?  Are there
}different schemes depending on whether transmission is for cable-TV or for
}microwave transmission?

Some cable companies don't scramble at all; instead, they use a notch filter
on the pole to block the signal entirely.

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Message-ID: <10270@ulysses.homer.nj.att.com>

Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!husc6!bloom-beacon!mit-eddie!ll-xn!ames!pasteur!ucbvax!ulysses!smb

References: <735@trwspf.TRW.COM> <7820004@hpcupt1.HP.COM> <5028@bloom-beacon.MIT.EDU>

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Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!husc6!bloom-beacon!mit-eddie!ll-xn!ames!pasteur!ucbvax!ulysses!smb
From: smb@ulysses.homer.nj.att.com (Steven Bellovin)
Newsgroups: sci.crypt
Subject: Re: Scrambling of Pay TV channels
Message-ID: <10270@ulysses.homer.nj.att.com>
Date: 2 May 88 17:53:19 GMT
References: <735@trwspf.TRW.COM> <7820004@hpcupt1.HP.COM> <5028@bloom-beacon.MIT.EDU>
Organization: AT&T Bell Laboratories, Murray Hill
Lines: 6

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