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Open Source Software and Other Licenses Страница: 18

Epson EH-TW5400 [18/39] Open source software and other licenses

We specifically permit and encourage the use of this software as the basis of commercial

products, provided that all warranty or liability claims are assumed by the product

vendor.

ansi2knr.c is included in this distribution by permission of L. Peter Deutsch, sole

proprietor of its copyright holder, Aladdin Enterprises of Menlo Park, CA. ansi2knr.c is

NOT covered by the above copyright and conditions, but instead by the usual

distribution terms of the Free Software Foundation; principally, that you must include

source code if you redistribute it. (See the file ansi2knr.c for full details.) However, since

ansi2knr.c is not needed as part of any program generated from the IJG code, this does

not limit you more than the foregoing paragraphs do.

The Unix configuration script "configure" was produced with GNU Autoconf. It is

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-1.2.56

libpng-1.2.44

License terms of conditions of each program which are provided by owner of the

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.

If you modify libpng you may insert additional notices immediately following this

sentence.

This code is released under the libpng license.

libpng version 1.2.6, August 15, 2004, through 1.2.49, March 29, 2012, are Copyright (c)

2004, 2006-2009 Glenn Randers-Pehrson, and are 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

disclaimer and license as libpng-1.0.6 with the following individuals added to the list of

Contributing 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 fulfill

any of your particular purposes or needs. This library is provided with all faults,

and the entire risk of satisfactory quality, performance, accuracy, and effort 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

disclaimer and license as libpng-0.96, with the following individuals added to the list of

Contributing Authors:

Open Source Software and Other Licenses

Epson EH-TW5400 [18/39] Open source software and other licenses

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