Multiple technique entropy coding system and method
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United States of America Patent
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Feb 3, 2015
Grant Date -
Sep 29, 2011
app pub date -
Jun 7, 2011
filing date -
Apr 17, 2003
priority date (Note) -
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Abstract
A system, method and computer program product having optimal matching to a known or measured probability distribution encodes data without the use of an excessively large lookup table. An encoder constructed according to the present invention uses two or more different encoding methods in combination. In one embodiment, Huffman coding by table lookup is combined with computational generation, such as by using an exponential Golomb equation. The most commonly occurring elements are looked up in a small Huffman table, while the remaining elements are coded with the equation. In another embodiment, data is encoded using two or more equations. In yet another embodiment, data is encoded using multiple tables in conjunction with one or more equations.
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