The structure 8 further including a third set of {HEAD ~ switches} for selectively reading out said signals from said first and second set of storage capacitors onto a set of output lines as {TAIL ~ line signals} 
The structure 8 further including a third set of { HEAD ~ switches } for selectively reading out said signals from said first and second set of storage capacitors onto a set of output lines as { TAIL ~ line signals }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL