초록 ▼

A bar code symbology employs symbol characters that are 13 modules wide and employs 4 bars, all of the bars being 1-wide bars. Three of the symbol characters are used as a stop character, a start character and a numeric compression start character. The start/stop characters have a particular bar/spa

A bar code symbology employs symbol characters that are 13 modules wide and employs 4 bars, all of the bars being 1-wide bars. Three of the symbol characters are used as a stop character, a start character and a numeric compression start character. The start/stop characters have a particular bar/space pattern to allow standard bar code readers to determine the state of optical focus of an electro-optical input device in the reader. The numeric compression start character, and a numeric compression latch character, initiate a numeric compression method that allows three symbol characters to encode five numeric data characters. Shift and latch symbol characters allow the full ASCII and extended ASCII characters to be encoded under the symbology of the present invention. The symbology employs a single error detection character generated by a prime modulo 53 method.

대표청구항 ▼

A method for printing a surface with a bar code symbol, the method comprising the step of: providing adjacently positioned groups of sequential marks, the groups including four marks of a first width that are all substantially uniformly wide, at selectively spaced intervals within the groups, and in

A method for printing a surface with a bar code symbol, the method comprising the step of: providing adjacently positioned groups of sequential marks, the groups including four marks of a first width that are all substantially uniformly wide, at selectively spaced intervals within the groups, and including four blank intervals within each of the groups, each of the blank intervals having a plurality of different widths which are integer multiples of a second width, where each group has a total width substantially equal to a sum of four times the first width and nine times the second width.