Bar code encoding system using four-state codes

Details Bar code encoding system using four-state codes Bar code encoding system using four-state codes

1996-03-15

1998-10-06

Hajec, Donald T.

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235462, G06K 0710

Patent

active

058180311

ABSTRACT:
A bar code encoding system comprising a representing unit for representing an input character by an information symbol of m bits excluding a bit pattern of all "0" bits, a calculating unit for subjecting a series of a k-number of information symbols to error-correction encoding and calculating a check symbol series of a q-number of check symbols, a converting unit for respectively converting an n=(k+q) number of symbols to predetermined bar code patterns, and arrangement converting unit for converting arrangement of the n-number of symbols so that at most three bar code patterns corresponding to the check symbols may not be consecutively arranged.

REFERENCES:
patent: 4743747 (1988-05-01), Fougere et al.
patent: 5153928 (1992-10-01), Iizuka
patent: 5479515 (1995-12-01), Longacre
USPS Fifth Advanced Technology Conference, pp. 49-54, 1992, Richard E. Blahut, et al., "A Damage Resistant Bar Code for the Royal Mail" No month.
Automation, pp. 20-21, Sep. 1992, "Understanding The New 4-state Customer Code".

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