Re: GIF Format

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On Sunday, August 29, 1999 11:56 PM Greg Phillips wrote:


> I just ran across this...it appears that if you operate a website that
> uses gif images,or other LZW(TIFF-LZW, PostScript, Portable Document
> Format (PDF), V.42bis, etc.) formats, you may have to purchase a $5000
> license from Unisys, the people who patented the technology.
>
> Also, if you write a program that reads or writes GIF images, you must
> get a license.  Lastly, if you download a program that makes use of GIF
> technology, you must obtain a license from Unisys (which may or may not
> cost money, depending on the circumstances).  If you don't get this
> license, you are supposedly in violation of
>
> That, in a nutshell is what's wrong with the world today.
>
> Take a look:
> http://corp2.unisys.com/LeadStory/lzwfaq.html
> http://corp2.unisys.com/LeadStory/lzw-license.html
>
> Greg Phillips

That's why I've been considering writing a PNG library.
Lossless, supports more than 256 colors, and it's free...
( for more info see http://www.cdrom.com/pub/png/ )

Does anyone else have something started on this format?
There is open source C code provided but I'm not the most fluent with C...

-- Brian Broker

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