Ink-spread compensated bar code symbology and compensation methods
AssigneeSymbol Technologies, Inc.
InventorFrederick Schuessler
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Abstract
A method for producing an ink-spread compensated variant of an existing optical code encodation scheme, wherein the existing encodation scheme has printed areas and spaces having a length in at least one dimension being a function of a given unit length for encoding information. In the method, the pattern of printed areas and spaces for a given data input is determined and a given length is added to the length of each space while the length of the printed areas remains unchanged to enlarge the overall length of the resulting code symbol in the at least one dimension.
Claims24
A method of producing an ink-spread compensated variant of an existing optical code encodation scheme comprising the steps of:
- determining a pattern of printed areas and spaces in the existing encodation scheme for a data input;
- the printed areas and spaces each having a respective length in at least one dimension as a function of a given unit length for encoding information;
- and
- adding a predetermined length to the length of each space while the length of each printed area remains unchanged to produce a modified code symbol.
Dependencies are inferred from the claim text.