The characters and graphics from a teletext/data transmission decoder are synthetically combined with the portions of {TAIL ~ the images} of {HEAD ~ the video signals} for blank zones of the screen by the synthesizing circuit 
The characters and graphics from a teletext / data transmission decoder are synthetically combined with the portions of { TAIL ~ the images } of { HEAD ~ the video signals } for blank zones of the screen by the synthesizing circuit
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH