Bar code demodulating method

Details Bar code demodulating method Bar code demodulating method

1993-07-14

1995-09-19

Shepperd, John

Registers

Coded record sensors

Particular sensor structure

G06K 710

Patent

active

054517613

ABSTRACT:
A bar code demodulating method includes a step of measuring lengths of successive characters of a bar code, a step of obtaining a ratio of the length of a demodulating character which is to be demodulated and the length of a previous character which is demodulated prior to the demodulating character, and a step of demodulating the demodulating character by correcting a width of at least one reference bar within the previous character based on the ratio and by obtaining a number of modules within the demodulating character based on the correction.

REFERENCES:
patent: 4354101 (1982-10-01), Hester et al.
patent: 4414468 (1983-11-01), Laurer et al.
patent: 4528443 (1985-07-01), Smith
patent: 4757206 (1988-07-01), Ohta

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