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Method-and-system-for-symbol-binarization

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Method and system for symbol binarization

Details

Inventors: Winger, Lowell;
Assignee: LSI Logic Corporation (Milpitas, CA)
Primary Examiner: Young; Brian
Assistant Examiner:
Attorney, Agent or Firm: Maiorana; Christopher P.

The present invention is directed to an improved method for the binarization of data in an MPEG data stream. The invention makes use of unary binarization to create codewords up until an index threshold. Once the threshold has been met, succeeding code symbols have appended to them an exp-Golomb suffix. This hybrid binarization scheme reduces the number of binary codewords to be processed by a Binary Arithmetic Coder (BAC), thus reducing the computation required by the BAC.

DETAILED DESCRIPTION The present invention is directed to a method of binarization, the method comprising the step of determining if a code symbol index value is less than a threshold value, if so then constructing a codeword using a first binarization model; else constructing a codeword using a second binarization model.
The present invention is also directed to a binarization system, the system comprising means for determining if a code symbol index value is less than a threshold value, if so then utilizing means for constructing a codeword using a first binarization model; else utilizing means for constructing a codeword using a second binarization model.
The present invention is further directed to a computer readable medium containing instructions for binarization, comprising instructions for determining if a code symbol index value is less than a threshold value, if so then constructing a codeword using a first binarization model; else constructing a codeword using a second binarization model.

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