초록 ▼

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 ch

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 can represent two 8-bit bytes, or one 16-bit word. As a result, the symbology can efficiently encode 8-bit bytes for use in computer processing, or encode 16-bit character sets such as Unicode. Symbology encodes extended channel interpretation (ECI) numbers, provides multiple numeric compression modes, provides a structured append using a single mode character, as well as other features. Additionally, the symbology includes error correction, with a Special Features Flag character indicating use of error correction in a symbol.

대표청구항 ▼

[ I(we) claim:] [1.]1. A machine-readable symbology having a plurality of symbol characters wherein a group of two or more symbol characters together form a symbol, and wherein the machine-readable symbology comprises, as a member of the symbology, a companion symbol present symbol character that in

[ I(we) claim:] [1.]1. A machine-readable symbology having a plurality of symbol characters wherein a group of two or more symbol characters together form a symbol, and wherein the machine-readable symbology comprises, as a member of the symbology, a companion symbol present symbol character that indicates that at least one companion symbol is present near to the group of symbol characters forming the symbol.