an eleventh step which sets the first time ratio as the second time ratio for {TAIL ~ the next reproducing control signal} and initialize {HEAD ~ the number} of the speed detection signals 
an eleventh step which sets the first time ratio as the second time ratio for { TAIL ~ the next reproducing control signal } and initialize { HEAD ~ the number } of the speed detection signals
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH