From: Ralf Quint <freedos...@gmail.com> On 8/1/2016 2:14 PM, TJ Edmister wrote: > On Mon, 01 Aug 2016 05:24:30 -0400, dmccunney <dennis.mccun...@gmail.com> > wrote: > >> More to the point, who *needed* it? >> >> MNG is PNG with support for animation. PNG was created to be a >> graphics format unencumbered by patents. > If GIF was patent encumbered, then it would seem that anyone who wanted > support for animation in an unencumbered format "needed" MNG. GIF was indeed covered by several patents from Unisys, in particular the LZW compression, which all ran out in 2004... https://en.wikipedia.org/wiki/GIF#Unisys_and_LZW_patent_enforcement
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