An LR separating unit outputs an LR separation signal separated into {HEAD ~ left and right image signals} in {TAIL ~ each} of frames having the same image content 
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An LR separating unit outputs an LR separation signal separated into { HEAD ~ left and right image signals } in { TAIL ~ each } of frames having the same image content
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH