Epson PowerLite Pro G5450WUNL Guide De L'utilisateur page 214

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
support 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 provides
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 patent
restrictions on the remaining code.
The IJG distribution formerly included code to read and write GIF files. To avoid
entanglement with the Unisys LZW patent, GIF reading support has been removed
altogether, 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
usual, but are readable by all standard GIF decoders.
We are required to state that
"The Graphics Interchange Format(c) is the Copyright property of CompuServe
Incorporated. GIF(sm) is a Service Mark property of CompuServe Incorporated."
libpng
This projector product includes the open source software program "libpng" which
applies 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
copyright 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
discrepancy 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
sentence.
libpng version 1.2.6, September 12, 2004, is Copyright (c) 2004 Glenn
Randers-Pehrson, 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
Avis
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