Device for detecting {HEAD ~ the connectivity} of a monitor and inhibiting {TAIL ~ a data reproducing operation} 
Device for detecting { HEAD ~ the connectivity } of a monitor and inhibiting { TAIL ~ a data reproducing operation }
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL