Publication
IBM J. Res. Dev
Paper

Software implementations of the Q-Coder

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Abstract

The Q-Coder is an important new development in arithmetic coding. It combines a simple but efficient arithmetic approximation for the multiply operation, a new formalism which yields optimally efficient hardware and software implementations, and a new technique for estimating symbol probabilities which matches the performance of any method known. This paper describes implementations of the Q-Coder following both the hardware and software paths. Detailed flowcharts are given.

Date

01 Jan 1988

Publication

IBM J. Res. Dev

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