Method and apparatus for decoding unresolved bar code profiles

Details Method and apparatus for decoding unresolved bar code profiles Method and apparatus for decoding unresolved bar code profiles

1993-01-22

1995-02-14

Shepperd, John

Registers

Coded record sensors

Particular sensor structure

G06K 710

Patent

active

053897706

ABSTRACT:
A quantitative peak and valley location decoding method for variable length Code 39 and I2/5 that can extract data from profiles that do not resolve the narrow elements is described. The method is applied to a four and eight character Code 39 symbol, and a four digit I2/5 symbol, and is generic for any two-width symbology. The usable depth-of-field performance of a projected aperture scanning device and a video imaging device is shown to be improved by 300 percent using this decode method.

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