{HEAD ~ A device} 1, wherein {TAIL ~ the frame sync pattern} is a sync pattern for sensing by the USB host inserted between frames of image data received through the end point exclusive for an image 
wherein
{ HEAD ~ A device } 1 , wherein { TAIL ~ the frame sync pattern } is a sync pattern for sensing by the USB host inserted between frames of image data received through the end point exclusive for an image
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL 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 OTH OTH OTH OTH