Dataform readers and methods provide operation with a sequence of overlapping exposure periods for successive lines of sensor elements of an array. Also, the exposure periods for successive lines of sensor elements, or successive subsets of lines, can be independently determined. In operation of a dataform...http://www.google.com.tw/patents/US5646390?utm_source=gb-gplus-share專利 US5646390 - Dataform readers and methods
