wherein the left eye image signal and the right eye image signal are sequentially separated in any order within {TAIL ~ a second repetition period} in which {HEAD ~ frames} having the same image content are repeated for two frames 
in
wherein the left eye image signal and the right eye image signal are sequentially separated in any order within { TAIL ~ a second repetition period } in which { HEAD ~ frames } having the same image content are repeated for two frames
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL REL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH