Hardware data compressor that pre-huffman encodes to decide whether to huffman encode a matched string or a back pointer thereto
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United States of America Patent
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Nov 29, 2016
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N/A
app pub date -
Oct 14, 2015
filing date -
May 11, 2015
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Abstract
A hardware data compressor for compressing a block of characters. A first hardware engine finds a match of a string of characters at a current location in the block with an earlier occurrence in the block of the string of characters, determines a first size that is a total number of bits into which the matched string would be Huffman encoded as literals using a Huffman code table, calculates a back pointer from the current location to the earlier occurrence of the string, and determines a second size that is a number of bits into which the back pointer would be Huffman encoded using the Huffman code table. A second hardware engine Huffman encodes the matched string if the first size is less than the second size and otherwise Huffman encodes the back pointer.
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