providing {TAIL ~ encoded signals} corresponding to the encoded region, the encoded signals comprising a skip block designation, the skip block designation having been selected in accordance with {HEAD ~ a comparison} between a current region of an original image and a reference region; and 
providing { TAIL ~ encoded signals } corresponding to the encoded region , the encoded signals comprising a skip block designation , the skip block designation having been selected in accordance with { HEAD ~ a comparison } between a current region of an original image and a reference region ; and
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 OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH