Coded data generation or conversion – Digital code to digital code converters – To or from code based on probability
Patent
1997-01-14
1999-01-12
Hoff, Marc S.
Coded data generation or conversion
Digital code to digital code converters
To or from code based on probability
341 50, 341 51, 341 61, 341 67, 341106, H03M 700
Patent
active
058596046
ABSTRACT:
The present invention includes a method and circuit for the compression encoding and decoding of digital images. In particular, the method is directed to an improved implementation of the QM-Coder as defined in the JBIG Standard and a merged implementation of the QM-Coder as defined in the JBIG Standard with the Q-Coder as defined by the IBM ABIC standard. The improved implementation of the QM-Coder as defined in the JBIG Standard includes an improved CLEARBITS procedure. The merged implementation of the QM-Coder as defined in the JBIG Standard and Q-Coder as defined by the ABIC standard includes the sharing of hardware to reduce implementation logic.
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Mitchell Joan LaVerne
Slattery Michael John
Hoff Marc S.
International Business Machines - Corporation
Kost Jason L W
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