To prevent {HEAD ~ the capture range} of {TAIL ~ the receiver apparatus} from being exceeded by the coded information item in the portable transmitter unit after a particular time, the code generator in the portable transmitter unit and the code generator in the receiver apparatus are advanced by the same number of steps 
of
To prevent { HEAD ~ the capture range } of { TAIL ~ the receiver apparatus } from being exceeded by the coded information item in the portable transmitter unit after a particular time , the code generator in the portable transmitter unit and the code generator in the receiver apparatus are advanced by the same number of steps
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH