The Unix configuration script "configure" was produced with GNU Autoconf. It is
copyright by the Free Software Foundation but is freely distributable. The same holds
for its supporting scripts (config.guess, config.sub, ltconfig, ltmain.sh). Another sup-
port script, install-sh, is copyright by M.I.T. but is also freely distributable.
It appears that the arithmetic coding option of the JPEG spec is covered by patents
owned by IBM, AT&T, and Mitsubishi. Hence arithmetic coding cannot legally be
used without obtaining one or more licenses. For this reason, support for arithmetic
coding has been removed from the free JPEG software. (Since arithmetic coding pro-
vides only a marginal gain over the unpatented Huffman mode, it is unlikely that
very many implementations will support it.) So far as we are aware, there are no pat-
ent restrictions on the remaining code.
The IJG distribution formerly included code to read and write GIF files. To avoid en-
tanglement with the Unisys LZW patent, GIF reading support has been removed alto-
gether, and the GIF writer has been simplified to produce "uncompressed GIFs". This
technique does not use the LZW algorithm; the resulting GIF files are larger than usu-
al, but are readable by all standard GIF decoders.
We are required to state that
"The Graphics Interchange Format(c) is the Copyright property of Compu-
Serve Incorporated. GIF(sm) is a Service Mark property of CompuServe Incor-
porated."
libpng
This projector product includes the open source software program "libpng" which ap-
plies the terms and conditions provided by owner of the copyright to the "libpng".
The "libpng" are WITHOUT ANY WARRANTY; without even the implied warranty
of MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
List of libpng programs
libpng-1.2.7
License terms of conditions of each program which are provided by owner of the copy-
right to the "libpng" are as follows.
For conditions of distribution and use, see copyright notice in png.h Copyright (c)
1998-2004 Glenn Randers-Pehrson (Version 0.96 Copyright (c) 1996, 1997 Andreas
Dilger) (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
This copy of the libpng notices is provided for your convenience. In case of any discrep-
ancy between this copy and the notices in the file png.h that is included in the libpng
distribution, the latter shall prevail.
COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
If you modify libpng you may insert additional notices immediately following this sen-
tence.
libpng version 1.2.6, September 12, 2004, is Copyright (c) 2004 Glenn Randers-Pehr-
son, and is distributed according to the same disclaimer and license as libpng-1.2.5
with the following individual added to the list of Contributing Authors
Cosmin Truta
libpng versions 1.0.7, July 1, 2000, through 1.2.5 - October 3, 2002, are Copyright (c)
2000-2002 Glenn Randers-Pehrson, and are distributed according to the same disclaim-
er and license as libpng-1.0.6 with the following individuals added to the list of Contri-
buting Authors
Simon-Pierre Cadieux
Eric S. Raymond
Gilles Vollant
and with the following additions to the disclaimer:
There is no warranty against interference with your enjoyment of the library or
against infringement. There is no warranty that our efforts or the library will ful-
fill any of your particular purposes or needs. This library is provided with all
faults, and the entire risk of satisfactory quality, performance, accuracy, and ef-
fort is with the user.
libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are Copyright (c)
1998, 1999 Glenn Randers-Pehrson, and are distributed according to the same disclaim-
er and license as libpng-0.96, with the following individuals added to the list of Contri-
buting Authors:
Tom Lane
Glenn Randers-Pehrson
Willem van Schaik
libpng versions 0.89, June 1996, through 0.96, May 1997, are Copyright (c) 1996,
1997 Andreas Dilger Distributed according to the same disclaimer and license as
libpng-0.88, with the following individuals added to the list of Contributing Authors:
General Notes
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