The encoding circuit 11 performs multiplication of the two inputs thus supplied and {HEAD ~ coding} of {TAIL ~ those inputs} to digital signals 
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The encoding circuit 11 performs multiplication of the two inputs thus supplied and { HEAD ~ coding } of { TAIL ~ those inputs } to digital signals
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH