The difference signal thus obtained from the subtracting section is integrated in {HEAD ~ a difference} integrating section for each interval and is then supplied to {TAIL ~ a discriminating section} 
The difference signal thus obtained from the subtracting section is integrated in { HEAD ~ a difference } integrating section for each interval and is then supplied to { TAIL ~ a discriminating section }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL