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Path: utzoo!watmath!clyde!bonnie!akgua!mcnc!unc!england
From: england@unc.UUCP (Nick England)
Newsgroups: net.graphics
Subject: Re: exclusive-ORed cursors (money for nothing)
Message-ID: <518@unc.unc.UUCP>
Date: Mon, 4-Nov-85 12:06:10 EST
Article-I.D.: unc.518
Posted: Mon Nov  4 12:06:10 1985
Date-Received: Sun, 10-Nov-85 06:30:43 EST
References: <588@stc-b.stc.UUCP> <5988@utzoo.UUCP>
Reply-To: england@unc.UUCP (Nick England)
Organization: CS Dept, U. of N. Carolina, Chapel Hill
Lines: 14
Summary: 


the patent originally granted to NUGRAPHICS covers a lot of things
most of us take for granted as being obvious.the patent
includes pan,scroll, and zoom in hardware on a frame buffer as well
as EXOR. CADTRAK now holds rights to the patent and are asking a minimum
of $25,000 for a license.they claim IBM and HP have signed licenses.

In the same vein - LEXIDATA has patented the z-buffer and E&S has
got clipping matrix multiplier transformation and other stuff
patented.there are legal proceedings by LEXIDATA against RASTER
TECH currently and E&S has had SILICON GRAPHICS and MEGATEK in court.

it's not the friendly old graphics world it used to be.
--nick england (ex-IKONAS)