Method for enhancing the reliability of output data from a label

Details Method for enhancing the reliability of output data from a label Method for enhancing the reliability of output data from a label

1978-03-29

1979-11-27

Kilgore, Robert M.

Registers

Coded record sensors

Particular sensor structure

3401463Z, G06K 714, G06K 913

Patent

active

041756932

ABSTRACT:
A method for enhancing the reliability of output data from a label reader adapted to read a bar code consisting of a plurality of bars. Each bar in the bar code is scanned at a plurality of points and sets of binary symbols representative of the scanned points along each bar are obtained. Two sums are then formed for each bar, the first being the number of binary "1"s in the set and the second being the number of binary "0"s in the set, and the ratio of two sums is computed. If the ratio is larger than (1+.alpha.) for .alpha.>0, then the data corresponding to the numerator sum is regarded as reliable. If the ratio is less than (1-.beta.) for 0<.beta.<1, then the data corresponding to the denominator sum is regarded as reliable. If the ratio is equal to or larger than (1-.beta.) but equal to or less than (1+.alpha.), then the data is regarded as unreliable.

REFERENCES:
patent: 3588457 (1971-06-01), Bijleveld
patent: 3744026 (1973-07-01), Wolff
patent: 3806706 (1974-04-01), Hasslinger
patent: 3818191 (1974-06-01), Fennema
patent: 3818444 (1974-06-01), Connell
patent: 3882464 (1975-05-01), Zamkow
patent: 4044227 (1977-08-01), Holm
Allen, L. G., -Data Comparison Device, IBM Tech. Disc. Bull., vol. 2, No. 4, pp. 123-124, Dec. 1959.

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