A new bar code symbology in an exemplary embodiment employs three bars (and spaces) within nine modules, similar to Code 93. Fifty-three data characters are defined, including several special mode characters. By employing these special mode characters, together with certain routines, three symbol characters...http://www.google.es/patents/US6321986?utm_source=gb-gplus-sharePatente US6321986 - Robust machine-readable symbology and method and apparatus for printing and reading same
Robust machine-readable symbology and method and apparatus for printing and ...
