Machine readable optical printed symbol format

Details Machine readable optical printed symbol format Machine readable optical printed symbol format

1977-07-05

1978-12-19

Cook, Daryl W.

Registers

Records

235463, G06K 1904, G06K 710

Patent

active

041302435

ABSTRACT:
A generalized, machine readable optical printed symbol format for the representation of a plurality of codes, each symbol requiring minimal space, thus permitting a greater packing density. The optical printed symbol format is generally hour-glass shaped and consists of nine elements, each of which is either a bar or a space alternately and each of which can be wide or narrow. Alternate bars and spaces are arranged vertically in a generally hour-glass configuration such that the length of the bars and spaces is greater at the top and bottom of the symbol and decreases to a minimum point at the middle of the symbol. Optical printed symbols using this shape can be read in forward and reverse and upside down. A wider skew angle between the optical printed symbol and the scanner allows greater tolerances than heretofore possible with a consequent diminishing of the error rate in machine scanning.

REFERENCES:
patent: 3731064 (1973-05-01), Berler et al.
patent: 3735096 (1973-05-01), Knockeart et al.
patent: 3743819 (1973-07-01), Kapsambelis et al.
patent: 3761685 (1973-09-01), Alpert et al.
patent: 3766364 (1973-10-01), Krecioch et al.

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