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