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Method and system for reconfigurable memory-based permutation implementation

Image Number 7 for United States Patent #8122190.

Memory-based permutation methods and systems are provided for the permutation of data. The memory-based permutation methods and systems provide flexibility and reconfigurability while reducing size and increasing speed. They provide the ability to program a memory, such as a Random Access Memory (RAM), to implement a permutation of source data. The RAM may be reprogrammed to change the permutation pattern thereby providing the flexibility to implement any pattern of permutation from source data to output data and the reconfigurability to change that implementation as desired. Also, the size of the RAM is greatly reduced, and as the input and output data width and number of input and output data bits increase, the size and complexity of the RAM does not increase greatly or exponentially, as with typical conventional systems.

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