Bar code symbology capable of encoding bytes, words, 16-bit characters, etc. and method and apparatus for printing and reading same
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United States of America Patent
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Nov 21, 2000
Issued Date -
N/A
app pub date -
Apr 16, 1997
filing date -
Nov 5, 1993
priority date (Note) -
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status (Latency Note)
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Abstract
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.
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