FIG 3 is a block diagram showing {HEAD ~ the steps} for detecting the running speed of {TAIL ~ a sledge motor} within an optical disk system according to this invention 
FIG 3 is a block diagram showing { HEAD ~ the steps } for detecting the running speed of { TAIL ~ a sledge motor } within an optical disk system according to this invention
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH