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TIFF and LibTiff Mail List Archive

Thread

2004.07.08 23:14 "[Tiff] LZW and libtiff", by Bob Friesenhahn
2004.07.09 03:43 "Re: [Tiff] LZW and libtiff", by Andrey Kiselev
2004.07.09 17:15 "Re: [Tiff] LZW and libtiff", by Chris Losinger
2004.07.10 15:31 "Re: [Tiff] LZW and libtiff", by Bob Friesenhahn
2004.07.10 19:22 "Re: [Tiff] LZW and libtiff", by Andrey Kiselev
2004.07.10 19:18 "Re: [Tiff] LZW and libtiff", by Andrey Kiselev
2004.07.10 16:12 "Re: [Tiff] LZW and libtiff", by Frank Warmerdam
2004.07.10 17:31 "Re: [Tiff] LZW and libtiff", by Jay Berkenbilt
2004.07.10 17:49 "Re: [Tiff] LZW and libtiff", by Bob Friesenhahn
2004.07.10 19:44 "Re: [Tiff] LZW and libtiff", by Andrey Kiselev

2004.07.10 19:18 "Re: [Tiff] LZW and libtiff", by Andrey Kiselev

Don't forget that IBM still has an LZW patent in effect.

http://yro.slashdot.org/article.pl?sid=04/07/06/1717243

That is right, but does IBM ever claims that using unlicensed algotithm is illegal or whether users should pay them license fees? I know that IBM patents cover a large part of IT, but most of them are not used to take legal actions agains users.

On other hand, the discussed algorithm differs from the LZW used in TIFF. It is a bit more complicated (though, I'm not sure it produces higher compression ratio).

Andrey

Andrey V. Kiselev
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