Patent ID: 6786420
Filing Date: 2004-09-07
Classification: B41J,B82Y,G03B,G06F,G06K,G06T,G09G,G11C,H04N,H05K,Y02D

Abstract:
An information carrier comprising a card having a surface and an array of dots printed on the surface, the array of dots carrying information that incorporates both operative and redundant information, the dots being configured so that the operative information is dispersed within the redundant information to protect the operative information and to facilitate the use of error correcting algorithms so that the information is recorded on the surface in a fault tolerant manner, the dots defining at least one data area and at least one corresponding border region that is detectable by a reader to facilitate location of the, or each, data area wherein the dots defining the, or each, border region further define a plurality of targets, said targets being positioned at a predetermined location relative to the, or each, data area and each of said targets comprises an array of dots.