Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!coplex!dean
From: dean@coplex.uucp (Dean Brooks)
Newsgroups: comp.sys.amiga.misc
Subject: Re: AT&T using patent to go after people using X
Message-ID: <1991Feb24.175524.20105@coplex.uucp>
Date: 24 Feb 91 17:55:24 GMT
References: <1748@pdxgate.UUCP> <1991Feb24.135201.9052@ux1.cso.uiuc.edu>
Organization: Copper Electronics, Inc.
Lines: 21

cs326ag@ux1.cso.uiuc.edu (Loren J. Rittle) writes:
>Amiga and others (X 11R[34] comes to mind) ---
>When a window comes to the front (or any piece is exposed),
>the low level graphics subsystem can replace the bits in the
>window that are now visible (became exposed) because it kept
>a `back' (where the term `backing store' comes from, I would guess)
>up of the hidden parts of the window.  And if any drawing commands
>would have accessed those hidden areas they *were* updated (in the
>back store area).

Well hell, lets get a bunch of us together and patent the art of
walking.  Its about as abstract as the backing store concept. 
Then we can millions sueing every pedistrian in the world...

BTW, does anyone think that AT&T can make a viable claim off this?

--
dean@coplex.UUCP   Dean A. Brooks
                   Copper Electronics, Inc.
                   Louisville, Ky
UUCP: !uunet!coplex!dean