Bar code candidate select circuit

Details Bar code candidate select circuit Bar code candidate select circuit

1980-06-25

1982-05-11

Yusko, Donald J.

Registers

Coded record sensors

Particular sensor structure

3401463Z, 235466, G06K 710

Patent

active

043295746

ABSTRACT:
A bar code label candidate is framed in a stream of scanner-generated data by a circuit which counts the width of each pulse and which accumulates a fixed number of pulse width values on a rolling basis to provide overlapping basic unit signals. Each basic unit signal represents a potential N-pulse character. Basic unit signals occurring at N intervals are compared in a comparator circuit to determine whether predetermined character-indicating relationships exist. Character-indicating signals are accumulated in registers. Outputs from these registers are decoded to determine whether a label candidate (appropriate type and number of apparent characters in appropriate time sequence) has been found.

REFERENCES:
patent: 3770944 (1973-11-01), Schanne et al.
patent: 4074114 (1978-02-01), Dobras
patent: 4075461 (1978-02-01), Wu et al.
patent: 4104514 (1978-08-01), Sherer et al.
patent: 4163212 (1979-07-01), Buerger et al.
patent: 4182481 (1980-01-01), Maussion
patent: 4253018 (1981-02-01), Amacher et al.

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