Huffman code decoding circuit

Details Huffman code decoding circuit Huffman code decoding circuit

1995-03-07

1997-04-01

Gaffin, Jeffrey A.

Coded data generation or conversion

Digital code to digital code converters

To or from number of pulses

341 67, 341 63, H03M 740

Patent

active

056170890

ABSTRACT:
A Huffman code decoding circuit including a leading bit position determination unit for determining a leading bit position of a Huffman code to be taken out of a Huffman code data sequence to take in a predetermined number of bits from the leading bit position of the Huffman code data sequence, a first decoding table for inputting a first data sequence composed of a predetermined number of bits staring with the leading bit of the Huffman code data sequence output from the leading bit position determination unit to output a first decoded word and a first code length corresponding to the first data sequence input as an address, a plurality of 2nd to n-th decoding tables for inputting 2nd to n-th data sequences composed of a predetermined number of bits starting at a different bit position of the Huffman code data sequence output from the leading bit position determination unit to output a decoded word and a code length corresponding to the 2nd to n-th data sequences input as addresses, and a selector for selecting one of the outputs of the 2nd to n-th decoding tables in response to the first code length output from the first decoding table as a select signal to output a second decoded word and a second code length.

REFERENCES:
patent: 5398027 (1995-03-01), Ooi
patent: 5404138 (1995-04-01), Kim et al.
patent: 5428356 (1995-06-01), Ozaki
patent: 5446916 (1995-08-01), Derovanessian
patent: 5467088 (1995-11-01), Kinoochi et al.

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