1996-03-15 - Re: Beat Remote Monitor Snooping?
Header Data
From: Gary Howland <gary@kampai.euronet.nl>
To: cypherpunks@toad.com
Message Hash: dc8e01405eca279f3a8e6266616026d897847ae1c7ff63441deacc4518d994a8
Message ID: <199603142054.VAA04403@kampai.euronet.nl>
Reply To: N/A
UTC Datetime: 1996-03-15 06:01:28 UTC
Raw Date: Fri, 15 Mar 1996 14:01:28 +0800
Raw message
From: Gary Howland <gary@kampai.euronet.nl>
Date: Fri, 15 Mar 1996 14:01:28 +0800
To: cypherpunks@toad.com
Subject: Re: Beat Remote Monitor Snooping?
Message-ID: <199603142054.VAA04403@kampai.euronet.nl>
MIME-Version: 1.0
Content-Type: text/plain
At 10:46 PM 3/13/96 -0500, Alan Horowitz wrote:
>Visual contrast is not the same thing as frequency diffrence. It is quite
>easy to measure extremely small changes of phase. As in, your
>plain-vanilla FM receiver.
However, that's not how SVGA CRT's do it. NTSC (TV video) modulation is done by phase modulation of the 3.579545 MHz subcarrier. SVGA has three different baseband analog signals feeding three electron beams.
Even so, they still should be able to pick up SVGA with a little tinkering.
kkkkk
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- 1996-03-15 (Fri, 15 Mar 1996 14:01:28 +0800) - Re: Beat Remote Monitor Snooping? - Gary Howland <gary@kampai.euronet.nl>
- 1996-03-16 (Sat, 16 Mar 1996 09:22:55 +0800) - Re: Beat Remote Monitor Snooping? - lull@acm.org (John Lull)