{HEAD ~ Systems} of {TAIL ~ the camera} 31 and the USB host 35 are identical to those of the related art, but the interface unit 33 has a system as follows 
of
{ HEAD ~ Systems } of { TAIL ~ the camera } 31 and the USB host 35 are identical to those of the related art , but the interface unit 33 has a system as follows
HEAD HEAD HEAD HEAD HEAD REL 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 OTH OTH OTH OTH