A pattern having a plurality of bands in each of a plurality of lanes is photoelectrically converted, and the sum (histogram) of the density data (pixel data) of pixels lying in lines, each of which passes through a plurality of points in a direction perpendicular to the lanes, is detected on the basis...http://www.google.es/patents/US4841443?utm_source=gb-gplus-sharePatente US4841443 - Method of and apparatus for automatically reading 5 band arrayal pattern
Method of and apparatus for automatically reading 5 band arrayal pattern
