Patent ID: 7380717
Filing Date: 2008-06-03
Classification: G06K,G06T

Abstract:
1. A system for reading a bar code that has been distorted by its application to a curved surface, comprising: a) a bar code reader for (a) determining the radius of the curved surface by determining a distance between guard bars contained within said bar code and (b) determining whether the distance between the guard bars is the same as a distance between a second set of guard bars, wherein lines representing each of the bar widths of said bar code have the same respective line widths across the whole bar code; and b) means for altering standard reading of the dimensions of bars and spaces of said bar code as a function of the distance between the guard bars of said bar code and the distance flour the center of said bar code on the curved surface for compensating for the distortion, so that said bar code is able to be correctly decoded by the bar code reader, wherein the means for altering alters the standard reading dimensions when the distance between the guard bars is not the same as the distance between the second set of guard bars.