AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

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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 19:22 "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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