The invention provides data for {HEAD ~ display} on {TAIL ~ the displayed position} of a child frame during picture in picture playback, giving displayable time and the displayed area or displayable area 
on
The invention provides data for { HEAD ~ display } on { TAIL ~ the displayed position } of a child frame during picture in picture playback , giving displayable time and the displayed area or displayable area
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL 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 OTH