Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!dg!vis01!mpogue
From: mpogue@vis01.dg.com (Mike Pogue)
Newsgroups: comp.graphics
Subject: Jeffrey Entwisle, where are you?
Message-ID: <1245@dg.dg.com>
Date: 2 Jan 91 16:33:53 GMT
Sender: root@dg.dg.com
Reply-To: mpogue@dg.dg.com (Mike Pogue)
Organization: Data General Corporation, Westboro, MA.
Lines: 25


	I'm trying to locate the author of the paper "An Image Processing
	Approach to Computer Graphics", published in 1976.  The author's
	name is Jeffrey Entwisle, and he was with the Architecture
	Machine Group at MIT at that time.

	Anybody know of his whereabouts?  I am investigating the state
	of the art in graphics as of January 1975, the magic date in the
	Cadtrak patent question (Cadtrak claims to have invented XOR in a
	frame buffer, PAN, ZOOM, among other things, and if anybody can 
	prove that these were published ideas before Jan 1975, the patent
	becomes invalid.  I'm not a legal guy, so I'm sure this is a 
	simplified version.).

	Jeffrey's paper, actually given at a conference in 1974, may be
	relevant here, and I'd like to follow up to get more references
	in this time period.

	Note that Cadtrak's patent was applied for in 1976, but the way the
	law works, is that the assumed invention date is one year prior to
	filing.  
-- 
Mike Pogue
Data General Corp.		Speaking for myself, not my company....
Westboro, MA.