Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!purdue!decwrl!labrea!glacier!jbn
From: jbn@glacier.STANFORD.EDU (John B. Nagle)
Newsgroups: comp.graphics
Subject: Re: ShowScan
Message-ID: <18077@glacier.STANFORD.EDU>
Date: 3 Feb 89 16:53:11 GMT
References: <72@sdcc10.ucsd.EDU> <17670007@hpfcdj.HP.COM>
Reply-To: jbn@glacier.UUCP (John B. Nagle)
Organization: Stanford University
Lines: 23

In article <17670007@hpfcdj.HP.COM> myers@hpfcdj.HP.COM (Bob Myers) writes:
>However, I strongly suspect that we will *not* be seeing the computer
>graphics industry moving toward this resolution; it simply will be too
>difficult to get the display device itself at a reasonable cost, at least
>in this timeframe.

       Maybe not.  There are multigun monochrome CRTs with resolution in that 
range, sometimes used for displaying X-rays for doctor interpretation.  I
believe that Tektronix licences that technology from the startup company
that developed it.

       Color will be more difficult.  Small projection systems can, of course,
be constructed.  At really high resolutions, though, beaded or ground-glass
screens will have to be replaced by something with a finer structure, such
as a matte white surface.  Aligning the system will be a pain, but automated
means have already been developed for compensating for optical misalignment
in projection TV systems for military applications, so that problem is not
overwhelming.

       It will be a long, hard road to reality-quality TV.  But it will
happen.

					John Nagle