{HEAD ~ A packet manager} collects {TAIL ~ the pixel data} and generates a packet data signal that represents the pixel data collected from the multiple video data sources 
collects
{ HEAD ~ A packet manager } collects { TAIL ~ the pixel data } and generates a packet data signal that represents the pixel data collected from the multiple video data sources
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