The sampled portions of the analog video signal filtered by the filters are provided to {HEAD ~ a four to one multiplexer} which is coupled to {TAIL ~ the controller} 
is coupled to
The sampled portions of the analog video signal filtered by the filters are provided to { HEAD ~ a four to one multiplexer } which is coupled to { TAIL ~ the controller }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL