Bauer, N.N.BauerBloss, H.H.Bloss2022-03-082022-03-081997https://publica.fraunhofer.de/handle/publica/303826A coding structure comprises parallel, interspaced marker bodies of basically equal width, which include fixed spacings so that at least a first and a second spacing difference are unambiguously assigned to encoded information. A decoding device for this coding structure comprises an image processing device for the generation of spacing signals, two subtractors, which are connected downstream of the image processing device, and a table storage device, which is readable by means of the output signals of the subtractors.de608patent1990-4037719