{HEAD ~ The invention} provides apparatus and {TAIL ~ methods} for concurrently acquiring video data from multiple video data sources 
{ HEAD ~ The invention } provides apparatus and { TAIL ~ methods } for concurrently acquiring video data from multiple video data sources
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH