Patent ID: 6674427
Filing Date: 2004-01-06
Classification: G06F,G06K

Abstract:
A method of providing a position code on a surface, which position code codes a plurality of positions in a first direction on the surface, comprising the steps ofusing a first cyclic number series, which has the characteristic that the position in the number series of each number sequence of a predetermined length is determined unambiguously, printing out the first cyclic number series a plurality of times across the surface, different rotations of the first cyclic number series being used in such a way that predetermined displacements arise between adjacent number series, wherein the step of printing out comprises dividing the surface into a plurality of first code windows in the first direction, each of which comprises at least three first cyclic number series and has one number series overlapping one number series of adjacent first code windows, and using such rotations of the first cyclic number series when printing this out that the position of each first code window in the first direction is coded by means of the displacements between the first cyclic number series belonging to the code window.