The signals received by tuners are processed respectively by video processing circuits and fed to {HEAD ~ a synthesizing circuit} by way of compression circuits so that {TAIL ~ the images} of the signals are displayed respectively on left and right side sections of the screen of a display unit 
The signals received by tuners are processed respectively by video processing circuits and fed to { HEAD ~ a synthesizing circuit } by way of compression circuits so that { TAIL ~ the images } of the signals are displayed respectively on left and right side sections of the screen of a display unit
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH 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