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From: garry@batcomputer.tn.cornell.edu (Garry Wiegand)
Newsgroups: comp.graphics
Subject: Re: CRT technology?
Message-ID: <2029@batcomputer.tn.cornell.edu>
Date: Wed, 14-Jan-87 22:36:55 EST
Article-I.D.: batcompu.2029
Posted: Wed Jan 14 22:36:55 1987
Date-Received: Thu, 15-Jan-87 20:21:22 EST
Reply-To: garry%cadif-oak@cu-arpa.cs.cornell.edu
Organization: Cornell Engineering && Flying Moose Graphics
Lines: 36

In a recent article hutch@sdcsvax.UCSD.EDU (Jim Hutchison) wrote:
>In <1219@ucbcad.berkeley.edu> faustus@ucbcad.berkeley.edu writes:
>>[...]  How long will it be before
>>we start seeing 300 dpi color CRT's available?
>
>Correct me if I am wrong, but is there any need to go past 100 dots / inch?
>...

Sure - we'd always like the picture to look better! "Perfection" is 
reached only when adding more pixels makes no difference at all to my
perceptions. As to where that point is - our 300 dpi laser printers produce 
lettering that looks ever-so-slightly lumpy to my eye. Commercial 
establishments which do serious work use 1000-dpi-or-better film recorders. 
I don't know whether they're perfectly happy with 1000 dpi, but that
sounds like it might be getting warm. Only an order of magnitude away
from where we are!

But resolution isn't everything, I agree. As long as we're dreaming here,
I'd also like to have monitors which:

	- don't jiggle and swim (GPX's make me seasick), 
	- don't have intrinsically shiny faces, 
	- are *flat*, 
	- are able to reach full black (plasma screens are indeed nice 
	  if a bit snap-crackle-pop) and 
	- can reach *all* of the hues my eyes can see.

And no I haven't a clue how to do any of these. We build software. I 
note that what's already been done with frame buffers and CRTs is fairly 
amazing. - A 1024 by 1024 by 8 bit screen, noninterlaced, requires reading 
1024*1024*8*60 = about 500 megabits of memory per second. And what it takes 
to push electron electron beams to that accuracy with just electric and 
magnetic fields I have no idea... are there any color hardware engineers
in the crowd ? What are the real limits and state of the art?

garry wiegand   (garry%cadif-oak@cu-arpa.cs.cornell.edu)