Annex L (informative)
L.1 Introductory remarks
The user's attention is called to the possibility that - for
some of the coding processes specified in Annexes F, G, H, and J
- compliance with this Specification may require use of an
invention covered by patent rights.
By publication of this Specification, no position is taken with
respect to the validity of this claim or of any patent rights in
connection therewith. However, for each patent listed in this
Annex, the patent holder has filed with the ITTF a statement of
willingness to grant a license under these rights on reasonable
and non-discriminatory terms and conditions to applicants desiring
to obtain such a license.
The criteria for including patents in this Annex are:
This list of patents shall be updated during preparation and
maintenance of this Specification. During preparation, the list
shall be updated upon publication of the DIS and any subsequent
revisions, and upon publication of the IS. During maintenance,
the list shall be updated, if necessary, upon publication of any
revisions to the IS.
The following patents may be required for implementation of any
one of the processes specified in Annexes F, G, H, and J which
uses arithmetic coding:
- The patent has been identified by someone who is familiar
with the technical fields relevant to this Specification, and
who believes use of the invention covered by the patent is required
for implementation of one or more of the coding processes
specified in Annexes F, G, H, and J.
- The patent-holder has written a letter to the ITTF, stating
willingness to grant a license to an unlimited number of
applicants throughout the world under reasonable terms and
conditions that are demonstrably free of any unfair
No other patents required for implementation of any of the other
processes specified in Annexes F, G, H, or J had been identified at
the time of publication of this Specification.
- US 4,633,490, December 30, 1986, J.L. Mitchell and G. Goertzel,
"Symmetrical Adaptive Data Compression/Decompression System".
US 4,652,856, February 4, 1986, K.M. Mohiuddin and J.J. Rissanen, "A
Multiplication- free Multi-Alphabet Arithmetic Code".
US 4,369,463, January 18, 1983, D. Anastassiou and J.L. Mitchell,
"Grey Scale Image Compression with Code Words a Function of Image
US 4,725,884, February 16, 1988, C.A. Gonzales, J.L. Mitchell, and
W.B. Pennebaker, "Adaptive Graylevel Image Compression System".
US 4,749,983, June 7, 1988 G. Langdon, "Compression of Multilevel
US 4,935,882, June 19, 1990, W.B. Pennebaker and J.L. Mitchell,
"Probability Adaption for Arithmetic Coders".
US 4,905,297, February 27, 1990, G.G. Langdon, Jr., J.L. Mitchell,
W.B. Pennebaker, and F.F. Rissanen, "Arithmetic Coding Encoder and
US 4,973,961, November 27, 1990, C. Chamzas, D.L. Duttweiler, "Method
and Apparatus for Carry-over Control in Arithmetic Entropy Coding".
US 5,025,258, June 18, 1991, D.L. Duttweiler, "Adaptive
Probability Estimator for Entropy Encoding/Decoding".
Japanese Patent Application 2-46275, February 26, 1990, F. Ono, T.
Kimura, M. Yoshida, and S. Kino, "Coding System".
(The following names were added to Annex L for the IS)
John W. Lowe
Program Manager, Licensing
Intellectual Property & Licensing Services
500 Columbus Ave (Note this is a new phone/address)
Thornwood, NY 10594
Tel: +1 (914) 742-6275
Fax: +1 (914) 742-6729
Mitsubishi Electric Corp.
Intellectural Property License Department
1-2-3 Morunouchi, Chiyoda-ku
Tokyo 100, Japan
Tel: +81 (3) 3218 3465
Fax: +81 (3) 3215 3842
Intellectual Property - LAW
AT&T Bell Laboratories
101 Crawfords Corner Road
Holmdel, NJ 07733-3030, USA
Tel: +1 (908) 949 5780
Fax: +1 (908) 949 0292
Joseph A. Osborne, CEO
Electronic Imagery, Inc.
1100 Park Central Blvd. South, Suite 3400
Pompano Beach, FL 33064, USA
Tel: +1 (305) 968 7100
Fax: +1 (305) 968 7319
From the introduction to DIS 10918 Part 1 in our JPEG book:
"In Annex L, a new patent was added as relevant to arithmetic coding
<A>. and another added as relevant to hierarchical coding with a
final lossless stage.<B> Another patent, U.S. Pat. No 4,725,885,
that had been mistakenly cited as U.S Pat. No. 4,725,884 was removed
as no longer relevant."
<A> "Log coder probability estimation," William B. Pennebaker and
Joan L. Mitchell, "Probability Adaptation for Arithmetic Coders,
issued March 24, 1992. U.S. 5,099,440
<B>Joseph A. Osborne and Cindy Selfiert "Narrow Bandwidth Signal
Transmission", issued May 12, 1987. U.S. 4,665,436.
letter from Joan Mitchell