{HEAD ~ A signal generator} generates {TAIL ~ a plurality} of grey level signals which are inputted into a one bit per pixel raster scan video display device  
generates
{ HEAD ~ A signal generator } generates { TAIL ~ a plurality } of grey level signals which are inputted into a one bit per pixel raster scan video display device
HEAD HEAD 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