Path: utzoo!utgpu!watserv1!watmath!att!tut.cis.ohio-state.edu!zaphod.mps.ohio-state.edu!wuarchive!decwrl!nsc!amdahl!terry
From: terry@uts.amdahl.com (Lewis T. Flynn)
Newsgroups: comp.arch
Subject: Re: XOR cursors
Message-ID: <43Z502Ivb3IC01@amdahl.uts.amdahl.com>
Date: 27 Jun 90 00:37:55 GMT
References: <1990Jun20.011602.1010@xavax.com> <1990Jun23.031117.2791@esegue.segue.boston.ma.us> <555@dg.dg.com> <563@dg.dg.com>
Reply-To: terry@amdahl.uts.amdahl.com (Lewis T. Flynn)
Organization: Amdahl Corporation, Sunnyvale CA
Lines: 12

In article <563@dg.dg.com> mpogue@dg.dg.com writes:
>
>	By the way, they also claim to have invented "split screen", too.  It
>attempts to cover horizontal, vertical split screen, and maybe hardware
>windowing as well.  Hardware pan and zoom is claimed, too.

I thought Doug Englebart demonstrated text windows (a form of split
screen) in his famous NLS demo at the '68 FJCC (along with the mouse
and other neat stuff). If so, then any split screen patent should be
invalid as a whole lot of people saw the concept.

Terry