As illustrated, a control signal V SYNC first coordinates {HEAD ~ the reading} out of {TAIL ~ the even field}, and then coordinates the reading out of the odd field 
out of
As illustrated , a control signal V SYNC first coordinates { HEAD ~ the reading } out of { TAIL ~ the even field } , and then coordinates the reading out of the odd field
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH