The line memory 512 delays the input video signal to output a video signal {HEAD ~ S ori} in {TAIL ~ the th line} when a video signal S ori in the nth line is output from the line memory 511 
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The line memory 512 delays the input video signal to output a video signal { HEAD ~ S ori } in { TAIL ~ the th line } when a video signal S ori in the nth line is output from the line memory 511
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH