The analog to {HEAD ~ digital converter} 44, of course, only samples the analog input from the light sensor 26 at {TAIL ~ discrete intervals} as the stationary light sensor 26 scans the path 22 of the moving media 12 
The analog to { HEAD ~ digital converter } 44 , of course , only samples the analog input from the light sensor 26 at { TAIL ~ discrete intervals } as the stationary light sensor 26 scans the path 22 of the moving media 12
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH