Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site unc.unc.UUCP 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)