W3C home > Mailing lists > Public > www-patentpolicy-comment@w3.org > November 2001

Re: Apple and PNG?

From: Adam Warner <lists@consulting.net.nz>
Date: 19 Nov 2001 13:44:13 +1300
To: www-patentpolicy-comment@w3.org
Message-Id: <1006130655.615.11.camel@work>
> From: tom poe (tompoe@renonevada.net)
> Date: Sat, Nov 17 2001

> Hi:  Came across this article re: Apple's PNG and MNG nonsense
> http://www.theregister.co.uk/content/39/22898.html
> One more timely example of the need to draw a clear line for these folks.
> How are you doing?  Need a bigger crayola?  Man, this is just ridiculous.

Quoting Greg Roelofs (member, PNG Group; author, PNG: The Definitive
Guide; maintainer, PNG and MNG home sites; hacker, lots of PNG-related


"The PNG group (which includes at least one or two members of the W3C's
SVG team, btw) did discuss the Apple patent several weeks ago, and we
decided it was completely irrelevant to PNG itself, almost certainly
irrelevant to the pnmtopng utility and to PNG's animated extension, MNG,
and probably irrelevant to SVG, as well. And that's where the
discussion--and the "perturbation"--ended, for the most part. In short,
PNG alpha is identical to the version described in Porter and Duff's
1984 SIGGRAPH paper, which precedes Apple's filing by 8 years."

Received on Sunday, 18 November 2001 19:45:06 UTC

This archive was generated by hypermail 2.3.1 : Tuesday, 6 January 2015 21:06:45 UTC