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List: freedesktop-xorg-devel
Subject: Re: Xorg copyright infrigement
From: "Jasper St. Pierre" <jstpierre () mecheye ! net>
Date: 2014-04-29 18:01:14
Message-ID: CAA0H+QQbM5HCA5A9NUYXkpnsBwRjGmpcbrFKHvwW5TDrbFtB7Q () mail ! gmail ! com
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The VESA CVT standard is still free, by the way. You can find download
instructions for accessing any VESA public standard here:
http://www.vesa.org/wp-content/uploads/2010/12/thankspublic.htm
On Mon, Apr 28, 2014 at 5:08 AM, Egbert Eich <eich@freedesktop.org> wrote:
> On Sun, Apr 27, 2014 at 12:28:46PM +0200, Mateusz Jończyk wrote:
> > >
> > > The xls however, felt as if it was meant as a reference
> implementation, aimed at
> > > improving the proliferation of CVT. If graham does get contacted, i
> think he
> > > would agree.
> > I don't have any doubts that the Authors of the XLS would agree to
> inclusion of its
> > derivative works in XOrg and other programs.
> > Until that happens, however, we cannot rely on it.
> > >
> > > Now, before we do get access to those documents, how are you intending
> to
> > > circumvent this claimed copyright infringement without infringing
> yourself under
> > > your very strict rules?
> > We could just rewrite it using the Chinese wall principle:
> > http://en.wikipedia.org/wiki/Clean_room_design
>
> Gentlemen - please get out of this rat hole!
>
> The implemenation in the X.Org repo - from which other implemenations
> were derived - is not a copy of the code in the spread sheet and
> therefore does not infringe on any copyright held by the author of it:
> the spread sheet is in XLS, the X.Org implemenation is C code:
> The *only* thing in common with the spread sheet is the *algorithm*.
>
> This algorithm however is a published and publically available VESA
> standard.
>
> One can obtain VESA standards either
> - by downloading them if they are available for free download (some are)
> - by purchasing them
> - by being a member of VESA.
>
> The beauty of VESA standards is that they are royalty free: Once one
> has obtained one one can freely implement it.
> In our case here, the algorithm if the CVT standard was published by
> VESA and made available for free download thru the said spread sheet
> (instead of a pdf document).
>
> So why on earth would anybody now want to do a clean room implemenation
> of a standard that is publically available?
>
> The *only* thing that should be done is to get rid of the paragraph
> containing the eye-brow raiser term 'stolen' to something saying:
>
> This code is an implemenation of the VESA CVT standard.
> This standard can be obtained from http://www.vesa.org.
>
> Cheers,
> Egbert.
>
> _______________________________________________
> xorg-devel@lists.x.org: X.Org development
> Archives: http://lists.x.org/archives/xorg-devel
> Info: http://lists.x.org/mailman/listinfo/xorg-devel
>
--
Jasper
[Attachment #5 (text/html)]
<div dir="ltr">The VESA CVT standard is still free, by the way. You can find download \
instructions for accessing any VESA public standard here:<br><br><a \
href="http://www.vesa.org/wp-content/uploads/2010/12/thankspublic.htm">http://www.vesa.org/wp-content/uploads/2010/12/thankspublic.htm</a><br>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Apr 28, 2014 \
at 5:08 AM, Egbert Eich <span dir="ltr"><<a href="mailto:eich@freedesktop.org" \
target="_blank">eich@freedesktop.org</a>></span> wrote:<br> <blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex"><div class="">On Sun, Apr 27, 2014 at 12:28:46PM +0200, \
Mateusz Jończyk wrote:<br> > ><br>
</div><div class="">> > The xls however, felt as if it was meant as a reference \
implementation, aimed at<br> > > improving the proliferation of CVT. If graham \
does get contacted, i think he<br> > > would agree.<br>
> I don't have any doubts that the Authors of the XLS would agree to inclusion \
of its<br> > derivative works in XOrg and other programs.<br>
> Until that happens, however, we cannot rely on it.<br>
> ><br>
> > Now, before we do get access to those documents, how are you intending \
to<br> > > circumvent this claimed copyright infringement without infringing \
yourself under<br> > > your very strict rules?<br>
> We could just rewrite it using the Chinese wall principle:<br>
> <a href="http://en.wikipedia.org/wiki/Clean_room_design" \
target="_blank">http://en.wikipedia.org/wiki/Clean_room_design</a><br> <br>
</div>Gentlemen - please get out of this rat hole!<br>
<br>
The implemenation in the X.Org repo - from which other implemenations<br>
were derived - is not a copy of the code in the spread sheet and<br>
therefore does not infringe on any copyright held by the author of it:<br>
the spread sheet is in XLS, the X.Org implemenation is C code:<br>
The *only* thing in common with the spread sheet is the *algorithm*.<br>
<br>
This algorithm however is a published and publically available VESA<br>
standard.<br>
<br>
One can obtain VESA standards either<br>
- by downloading them if they are available for free download (some are)<br>
- by purchasing them<br>
- by being a member of VESA.<br>
<br>
The beauty of VESA standards is that they are royalty free: Once one<br>
has obtained one one can freely implement it.<br>
In our case here, the algorithm if the CVT standard was published by<br>
VESA and made available for free download thru the said spread sheet<br>
(instead of a pdf document).<br>
<br>
So why on earth would anybody now want to do a clean room implemenation<br>
of a standard that is publically available?<br>
<br>
The *only* thing that should be done is to get rid of the paragraph<br>
containing the eye-brow raiser term 'stolen' to something saying:<br>
<br>
This code is an implemenation of the VESA CVT standard.<br>
This standard can be obtained from <a href="http://www.vesa.org" \
target="_blank">http://www.vesa.org</a>.<br> <br>
Cheers,<br>
Egbert.<br>
<div class="HOEnZb"><div class="h5"><br>
_______________________________________________<br>
<a href="mailto:xorg-devel@lists.x.org">xorg-devel@lists.x.org</a>: X.Org \
development<br>
Archives: <a href="http://lists.x.org/archives/xorg-devel" \
target="_blank">http://lists.x.org/archives/xorg-devel</a><br>
Info: <a href="http://lists.x.org/mailman/listinfo/xorg-devel" \
target="_blank">http://lists.x.org/mailman/listinfo/xorg-devel</a></div></div></blockquote></div><br><br \
clear="all"><br>-- <br> Jasper<br> </div>
_______________________________________________
xorg-devel@lists.x.org: X.Org development
Archives: http://lists.x.org/archives/xorg-devel
Info: http://lists.x.org/mailman/listinfo/xorg-devel
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