The fault tolerant method for detecting {TAIL ~ a sync mark} 32, wherein {HEAD ~ the state machine} is a counter 
The fault tolerant method for detecting { TAIL ~ a sync mark } 32 , wherein { HEAD ~ the state machine } is a counter
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH