Xref: utzoo rec.video:13153 sci.electronics:12637 rec.ham-radio:21422
Path: utzoo!attcan!uunet!zephyr.ens.tek.com!tekfdi!videovax!bill
From: bill@videovax.tv.tek.com (William K. McFadden)
Newsgroups: rec.video,sci.electronics,rec.ham-radio
Subject: Re: HDTV and Waveform Modulation
Keywords: HDTV waveform PSI
Message-ID: <5867@videovax.tv.tek.com>
Date: 27 Jun 90 16:23:51 GMT
References: <4454@milton.u.washington.edu>
Reply-To: bill@videovax.tv.tek.com (William K. McFadden)
Followup-To: rec.video
Organization: Tektronix TV Measurement Systems, Beaverton OR
Lines: 23

This is the GENESYS system that was first introduced about two years ago.  As I
recall, it stirred quite a controversy due to its "black magic" nature and
sketchy details as to how the system worked.  A lot of engineers were claiming
it violated the laws of physics.  I saw Mr. Geddes present a paper on the
system at the 1989 NAB convention.  My coworkers and I couldn't tell if it was
real or snake oil.  They also had a demonstration that wasn't working when I
went to see it.  A coworker said they sort of got it working the next day
(apparently there was a lot of crosstalk between the two "channels").

At this year's NAB, another paper was presented that gave a lot more detail on
the system and outlined plans for testing it on the air.  This time around, it
seemed more like a real system, but still had some "snake oil" aspects to it.
However, the jury is still out at least until the tests are completed.

Personally, I think it would be great if the system works, but you don't get
something for nothing.  I think we'll have to give up something to get two
video broadcasts on the same channel.  Whether it's something we're willing to
give up is another story.
-- 
Bill McFadden    Tektronix, Inc.  P.O. Box 500  MS 58-639  Beaverton, OR  97077
bill@videovax.tv.tek.com,     {hplabs,uw-beaver,decvax}!tektronix!videovax!bill
Phone: (503) 627-6920       "The biggest difference between developing a missle
component and a toy is the 'cost constraint.'" -- John Anderson, Engineer, TI