Interesting People mailing list archives
More on the .GIF factor
From: David Farber <farber () central cis upenn edu>
Date: Tue, 3 Jan 1995 19:56:18 -0500
Date: Tue, 3 Jan 1995 16:53:15 -0800 From: "Brock N. Meeks" <brock () well sf ca us> To: farber () central cis upenn edu Dave, this just in from the WELL, it's from a CompuServe official that is able to speak to the .GIF dust up. As you'll see, he has given permission to repost his comments. Unisys, as it turns out, seems to be the "bad guy." -- Brock Topic 658 [eff]: CompuServe/Unisys Lower the Hammer on GIF #29 of 30: Tom Mandel (mandel) Tue Jan 3 '95 (16:27) 51 lines I asked Tim Oren directly about this and here's what he said, with permission to pass it along... From: Tim Oren <TIMOREN () csi compuserve com> To: Tom Mandel <mandel () well sf ca us> Subject: CIS/GIF Message-ID: <CSI_6087-116212 () CompuServe COM> Status: R Tom - Re GIF, I can talk about it, and if the impression being left is that we are trying to make big bucks, I definitely need to talk about it, because we've lef t the wrong impression. Here's the story, which you CAN repeat, WITH my name attached: GIF was originally developed at CompuServe by Steve Wilhite, who currently works for me. As part of it, he used with the LZW compression scheme, which had been openly published by Unisys engineer in a journal. A number of other developers picked up and used LZW as well. None of us knew that Unisys had filed for, and eventually received, a patent on the LZW scheme. I believe this is called a 'submarine' patent - it can surface and get you later. We were got. Unisys proposed an infringement suit, and we had no recourse but to settle. We are paying licensing fees in a manner which IS a nondisclosure item. One of the things we needed to be able to do is to 'pass through' a license embodying both LZW & GIF to those developers who create their own client programs to CompuServe, such as TAPCIS and Mac Nav, since they 'practice' LZW as well. The reason that GIF is included as a conditional in such licenses is that we can't pass through an unrestricted LZW license, and the reason there is money involved is that we in turn have to pay Unisys. If anyone is taking the impression that we are asserting proprietary rights in GIF additional to the LZW patent, that is wrong. Neither are we attempting to assist Unisys in enforcing their patent with respect to non-CompuServe environments, such as the Internet, though 'buying into' our license would be one way of Internet based vendors in avoiding possible action from Unisys. This is far more headache than it is worth, believe me, and we are actively engaged in looking at migration strategies that will get us and our customers off the hook. Our reputation has been damaged by being an unwitting partner to Unisys during those 7 years of encouraging proliferation, and we are not happy about it. (I'm sure Stallman - rms - could find a moral in here somewhere... )
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- More on the .GIF factor David Farber (Jan 03)