Arrangement for compensating for scan line curvature

Details Arrangement for compensating for scan line curvature Arrangement for compensating for scan line curvature

1995-01-24

1996-12-10

Hajec, Donald T.

Registers

Coded record sensors

Particular sensor structure

235467, 359199, 359224, G06K 710

Patent

active

055833314

ABSTRACT:
A scanning arrangement contained in a scanning device which is operative for repetitively scanning indicia having parts of different light reflectivity; for instance, such as a bar code symbol through the intermediary of a scanning light or laser beam projected by the scanning arrangement in the form of a scan line which traverses the indicia at high scanning speeds in order to enable the reading of the information contained therein. The scan line is normally subject to a curvature which, at frequent times, may adversely influence the quality of the scanning operation or even lead to an incomplete reading of the indicia so as to create an erroneous information output, is imparted a curvature correction which will produce a linear scanning line at the indicia being scanned and read thereby, and thereby optimize the efficiency of the operation of the scanning element so as to enable the obtention of a high quality and rapidly implemented accurate scanning result from the information contained in the scanned indicia.

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