Registers – Coded record sensors – Particular sensor structure
Patent
1996-05-13
1997-11-11
Hajec, Donald T.
Registers
Coded record sensors
Particular sensor structure
235463, 235436, G06K 710
Patent
active
056867166
ABSTRACT:
A void and spot discrimination apparatus and method for successfully decoding bar code symbols having imperfections therein. A first and a second scan are performed, and a signal return is obtained, in which information is obtained related to a smallest size black bar and white space, as well as a largest size black bar and white space. The signal returns from the first and second scans is sent to a decoder, and third and fourth scans are performed. The signal returns from the third and fourth scans are altered based on the smallest/largest sizes obtained from the two previous scans, in order to eliminate potential ink spreads and print voids. The process is alternated in this manner until a successful bar code decoding is made.
REFERENCES:
patent: 3890597 (1975-06-01), Hanchett
patent: 4652731 (1987-03-01), Chautemps et al.
patent: 4728784 (1968-03-01), Stewart
patent: 5272322 (1993-12-01), Nishida et al.
patent: 5296691 (1994-03-01), Waldron et al.
patent: 5326961 (1994-07-01), Sibata
patent: 5336874 (1994-08-01), Hasegawa
patent: 5387787 (1995-02-01), Waldron et al.
patent: 5404004 (1995-04-01), Sato et al.
patent: 5412196 (1995-05-01), Surka
patent: 5457308 (1995-10-01), Spitz et al.
patent: 5510604 (1996-04-01), England
patent: 5514353 (1996-05-01), Ackley
patent: 5528022 (1996-06-01), Nakazawa
Hajec Donald T.
Le Thien Minh
PSC Inc.
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