{HEAD ~ means} for routing the DC power and {TAIL ~ the control signals} to each of the video system components along a plurality of control signal paths separate from the video signals; and 
for routing
{ HEAD ~ means } for routing the DC power and { TAIL ~ the control signals } to each of the video system components along a plurality of control signal paths separate from the video signals ; and
HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH 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