2004.07.10 19:22 "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

Interesting. Clearly it can be demonstrated that there was prior-art since UNISYS obtained a patent on the same algorithm several years earlier.

No, the algorithms are different (though both of them are LZ78 modifications).

Andrey V. Kiselev
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