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