Patent ID: 9476899
Filing Date: 2016-10-25
CPC Classification: G01B,G01D,G01P

Claim Text:
1. A magnetic field sensor for detecting a movement of an object, wherein the object has a plurality of object features, wherein a quantity of the object features belongs to a set of possible quantities of object features, wherein the set has a least common multiple of possible quantities of object features, wherein the magnetic field sensor comprises: a magnetic field sensing element for generating a magnetic field signal responsive to the object features as they pass by the magnetic field sensing element, wherein the magnetic field signal comprises a plurality of magnetic field signal cycles, wherein each one of the plurality of magnetic field signal cycles is indicative of a respective one of the plurality of object features passing by the magnetic field sensing element, wherein the plurality of magnetic field signal cycles includes a present magnetic field signal cycle and a plurality of past magnetic field signal cycles; and a motion detector coupled to the magnetic field sensing element and configured to generate a motion signal indicative of the movement of the object, wherein the motion signal has a plurality of rising edges and a plurality of falling edges, wherein each rising edge and each falling edge is associated with a respective one of the plurality of magnetic field signal cycles, wherein the motion detector comprises: