From comparison of the measured and expected values, {HEAD ~ an offset voltage} is generated and added to {TAIL ~ the CCD output signal} 
is added to
From comparison of the measured and expected values , { HEAD ~ an offset voltage } is generated and added to { TAIL ~ the CCD output signal }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL