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- COMPUSERVE ANNOUNCES GIF DEVELOPER LICENSE PROGRAM
-
- On May 28th, 1987, CompuServe introduced the Graphics Interchange Format
- (GIF) specification, subsequently revising the specification on August 8,
- 1990. Since that time, CompuServe has worked extensively with developers
- to license GIF and make it the worldwide graphics standard that it
- currently is. GIF uses LZW compression and decompression methods that
- CompuServe originally thought to be public domain. However, Unisys
- Corporation claims patent rights to the LZW algorithm and compression
- process. This has caused some confusion as to whether developers need to
- license LZW from Unisys.
-
- CompuServe recently negotiated and secured a patent license for LZW
- technology from Unisys. Through this license, CompuServe is able to
- provide a sub-license to GIF developers. This CompuServe GIF license
- agreement grants the developer lawful use of GIF and the LZW algorithm
- for certain uses. This relieves licensees from the obligation to license
- LZW directly from Unisys and extends to them other benefits of the terms
- negotiated by CompuServe. The CompuServe GIF license is based upon terms
- established with Unisys by CompuServe. This includes a requirement that
- the developer's software be used primarily with the CompuServe
- Information Service or use information obtained through the CompuServe
- Information Service. This license is subject to a reasonable royalty.
-
- GIF developers who register prior to January 10, 1995 can obtain the
- benefit of a clause in the CompuServe-Unisys agreement that states that
- Unisys will not pursue royalty claims for past use of LZW. The CompuServe
- GIF developer agreement, including compliance requirements, is available
- on the CompuServe Information Service in the Standards and Spec's section
- of the Graphics Support Forum. A new specification will be finalized
- which will become a part of the license agreement.
-
- Additional information and hard copies of the agreement can be obtained
- by contacting Larry Wood of Go Graphics at CIS ID# 76703,704, or by phone
- at 407-658-2687.
-
- From my own, and to be more accurate, I received the following authorization
- on Tue May 23 1995 from UNISYS(lzw_info@unisys.com<StarrMT@po4.bb.unisys.com>):
- ------------ Message begins here ------------
- I can not decipher the code in your next message. In any case, assuming you
- are acting as an individual and are not yourself a substantial part of a
- business, you may release the code as freeware. The notice you provide
- should clearly identify that the code is covered by U.S. Patent 4,558,302
- and foreign equivalent patents, which are owned by Unisys Corporation. The
- notice should additionally state that the code may not be used for
- commercial or for profit purposes or incorporated in another product,
- without first obtaining a license from Unisys Corporation.
- ------------- Message ends here -------------
-