{TAIL ~ The H countdown circuit} 14 counts clocks of the internal clock, and generates {HEAD ~ an H reset signal} which is a pulse indicating one horizontal period 
{ TAIL ~ The H countdown circuit } 14 counts clocks of the internal clock , and generates { HEAD ~ an H reset signal } which is a pulse indicating one horizontal period
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH