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   <H1>[Mageia-dev] About panotools patent problem (and other problematic	rpms)</H1>
    <B>Philippe DIDIER</B> 
    <A HREF="mailto:mageia-dev%40mageia.org?Subject=Re%3A%20%5BMageia-dev%5D%20About%20panotools%20patent%20problem%20%28and%20other%20problematic%0A%09rpms%29&In-Reply-To=%3C4D5E3823.5010103%40laposte.net%3E"
       TITLE="[Mageia-dev] About panotools patent problem (and other problematic	rpms)">philippedidier at laposte.net
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    <I>Fri Feb 18 10:13:07 CET 2011</I>
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<PRE>Hi everybody !
Just seen that mikala added panotools in the repository . (some
algorythms library to build panoramic photographs)
Very happy with this ! (thanks a lot...)

That's one of the first patent problems we may encounter :

Long time ago, iPIX, a company from USA muliplied patent lawsuit against
these free algorythms inventor and photographers using them (this
company is now dead because of bankruptcy but the patent problem is
still live... )

This patent problem was revoked in Europe by the European Patent Office
but is still valid in USA and perhaps other countries (Japan...)

There's a limitation to its use if you are in a country where the patent
problem exists !
For this reason : Mandriva proposed a rpm limited to a 160&#176; fov (field
of view) support but we could find in PLF a rpm without limitation (up
to 360&#176;...).
The spec was written to build differently for mandriva repo and plf
repo... and this is the one imported... but it allows to build only a
limited rpm (as it is not used with plf buildsystem)...

We might have two kinds of libpano :
- one without any legal issue in core-release,
- and another without limitation in tainted-release

Same problems will happen for other rpms whose 2 versions coexist (vlc,
mencoder, etc...

How can this be resolved ?
For dev : It was easy to use the same spec for buildind mdv and plf
different rpms
For users : it was easy to choose between .mdv and .plf because when we
are in a patent free country we may easily &quot;upgrade&quot; from mdv to plf :
same version number, but later alphabetical extension.

Is a special extension necessary for tainted rpms ?



</PRE>








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