Patent attributes
A very high resolution sensor for detecting an angular rotation of a rotating target, the sensor including a first pair of Hall effect sensors and a second pair of Hall effect sensors. A first magnetic flux density differential of the rotating target is generated from the first pair of Hall effect sensors and a second magnetic flux density differential of the rotating target is generated from the second pair of Hall effect sensors. A pulse corresponding to an amount of angular rotation of the rotating target is output based on the second magnetic flux density differential reaching the first magnetic flux density differential.