EP3650816B1 EP19207358.3A EP19207358A EP3650816B1 EP 3650816 B1 EP3650816 B1 EP 3650816B1 EP 19207358 A EP19207358 A EP 19207358A EP 3650816 B1 EP3650816 B1 EP 3650816B1 Authority EP European Patent Office Prior art keywords magnetic field magnetic sensor device determining sqr Prior art date Legal …