Patent ID: 7475822
Filing Date: 2009-01-13
Classification: G06K

Abstract:
1. An optical data code reader comprising: an illuminator device for illuminating an optical data code to be read out; an image-taking device for taking an image of said optical data code; a readout device for decoding said optical data code by processing image data generated by said image-taking device; and an adjustment device for carrying out an adjustment process by adjusting at least one condition selected from the group consisting of illumination conditions of said illuminator device and image-taking conditions for said image-taking device such that said image data become suitable for being read out; wherein said adjustment device serves to set a plurality of areas for image data outputted by said image-taking device, to extract differences in brightness between mutually adjacent pixels and to cumulatively add said differences in brightness on each of said areas, to thereafter extract one of said areas where the cumulatively added value is the largest and to carry out said adjustment process by using image data of the extracted one of said areas with the largest cumulatively added value.