The detection circuit 26 may detect, for example, a leading or trailing edge of {HEAD ~ a signal pulse} by monitoring {TAIL ~ samples} of the digital signal 
The detection circuit 26 may detect , for example , a leading or trailing edge of { HEAD ~ a signal pulse } by monitoring { TAIL ~ samples } of the digital signal
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH