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