Optically reading and processing alphanumeric data using a hand-held wand by passing a two-dimensional array of photosensitive elements horizontally along a line of data to be read. An optical image of the data is focused upon the array to produce digitized outputs which are thresholded to produce a...http://www.google.fr/patents/US3964022?utm_source=gb-gplus-shareBrevet US3964022 - Hand-held scan data handling system
