Decoding method

Details Decoding method Decoding method

2011-03-01

2011-03-01

Nguyen, Linh V (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

To or from number of pulses

C341S067000, C341S106000, C375S245000, C375S253000, C382S132000, C382S166000

Reexamination Certificate

active

07898444

ABSTRACT:
A decoding method comprising the following steps is provided. The mthlookup index for a new lookup table is obtained according to the number of leading 1's in the bit stream. The nthbase Huffman code in a simplified Huffman table is obtained according to the mthlookup index. The (n+1) most significant bits (MSB) are obtained from the bit stream according to the nthbase Huffman code. A difference is generated according to the (n+1) MSBs in the bit stream and the nthbase Huffman code. Whether the difference is less than 0 is checked. If yes, a symbol index is generated according to the difference and the nthbase symbol index, and a symbol is obtained according to the symbol index. If no, n is decreased or increased by 1 according to the method being used, and the data in the simplified Huffman table is compared continually.

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Compressed Data Formats specification; ISO/IEC 10918-1:1 1993.

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