The processes and logic flows can also be performed by, and {HEAD ~ apparatus} of the invention can be implemented as, special purpose logic circuitry, {TAIL ~ e.g., an FPGA} or an ASIC  
The processes and logic flows can also be performed by , and { HEAD ~ apparatus } of the invention can be implemented as , special purpose logic circuitry , { TAIL ~ e.g. , an FPGA } or an ASIC
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