Patent ID: 8274274

Claim:
Position/displacement measuring system comprising: at least one magnetically encoded scale body with at least one encoding track; and a sensor device with at least one sensor sensitive to the encoding; wherein the at least one encoding track comprises main fields of at least a first type and a second type which are arranged in a periodically alternating manner in at least a first direction, the subfields of the first type and second type being north pole fields and south pole fields; wherein the main fields of the first type and the main fields of the second type are each subdivided into subfields of at least two different types; wherein at least one of a length and an encoding strength of the subfields within a main field varies in at least the first direction; and wherein, in the main fields of the first type, at least one of the total length in the first direction and the total surface of field portions of the first type is greater than at least one of the total length and the total surface of field portions which are not of the first type, and in the main fields of the second type, at least one of the total length in the first direction and the total surface of field portions of the second type is greater than at least one of the total length and the total surface of field portions which are not of the second type.