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Re: [DRAFT] QA Tips - Gif versus PNG

From: Alex Rousskov <rousskov@measurement-factory.com>
Date: Thu, 18 Sep 2003 10:32:22 -0600 (MDT)
To: Karl Dubost <karl@w3.org>
Cc: www-qa@w3.org
Message-ID: <Pine.BSF.4.53.0309181019230.61415@measurement-factory.com>

On Thu, 18 Sep 2003, Karl Dubost wrote:

>     size of the file. The LZW algorithm was protected in USA by a
>     [8]patent hold by the company Unisys. The Unisys LZW patent expires
>     in the USA on June 20, 2003

This phrase needs to be brought in sync with current date, of course.
The patent has expired, AFAIK.

>     http://www.delphion.com/details?&pn=US04558302__

This seem to describe the US patent. Is there a page that gives
expiration dates for non-US patents?

If this tip is "approved", please note that W3C is still using GIF
images. For example, W3C front page has a GIF image advertising
a company (probably a prominent W3C member):

QA WG pages use W3C-produced GIFs as well. For example, "XHTML
conformant icon" on the QA Matrix page:

I am _not_ complaining, just noting integrity problems if the tip is


Received on Thursday, 18 September 2003 12:35:33 UTC

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