ISO/IEC 10918-1 : 1993(E)
(This annex does not form an integral part of this Recommendation | International Standard)
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 Information
Technology Task Force (ITTF) and the Telecommunication Standardization Bureau (TSB) 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:
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, or J;
the patent-holder has written a letter to the ITTF and TSB, 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 discrimination.
This list of patents shall be updated, if necessary, upon publication of any revisions to the Recommendation | International
List of patents
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:
US 4,633,490, December 30, 1986, IBM, MITCHELL (J.L.) and GOERTZEL (G.): Symmetrical Adaptive Data
US 4,652,856, February 4, 1986, IBM, MOHIUDDIN (K.M.) and RISSANEN (J.J.): A Multiplication-free
Multi-Alphabet Arithmetic Code.
US 4,369,463, January 18, 1983, IBM, ANASTASSIOU (D.) and MITCHELL (J.L.): Grey Scale Image
Compression with Code Words a Function of Image History.
US 4,749,983, June 7, 1988, IBM, LANGDON (G.): Compression of Multilevel Signals.
US 4,935,882, June 19, 1990, IBM, PENNEBAKER (W.B.) and MITCHELL (J.L.): Probability Adaptation
for Arithmetic Coders.
US 4,905,297, February 27, 1990, IBM, LANGDON (G.G.), Jr., MITCHELL (J.L.), PENNEBAKER (W.B.),
and RISSANEN (J.J.): Arithmetic Coding Encoder and Decoder System.
US 4,973,961, November 27, 1990, AT&T, CHAMZAS (C.), DUTTWEILER (D.L.): Method and Apparatus
for Carry-over Control in Arithmetic Entropy Coding.
US 5,025,258, June 18, 1991, AT&T, DUTTWEILER (D.L): Adaptive Probability Estimator for Entropy
US 5,099,440, March 24, 1992, IBM, PENNEBAKER (W.B.) and MITCHELL (J.L.): Probability Adaptation
for Arithmetic Coders.
Japanese Patent Application 2-46275, February 26, 1990, MEL ONO (F.), KIMURA (T.), YOSHIDA (M.), and
KINO (S.): Coding System.
The following patent may be required for implementation of any one of the hierarchical processes specified in Annex H
when used with a lossless final frame:
US 4,665,436, May 12, 1987, EI OSBORNE (J.A.) and SEIFFERT (C.): Narrow Bandwidth Signal
CCITT Rec. T.81 (1992 E)