{TAIL ~ The digital image information} contained in {HEAD ~ each group} is partitioned in units of a second predetermined value smaller than the first predetermined value 
{ TAIL ~ The digital image information } contained in { HEAD ~ each group } is partitioned in units of a second predetermined value smaller than the first predetermined value
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH