Patent ID: 8884610

Claim:
A magnetic field sensor assembly configured to measure an angular direction of a sensed magnetic field relative to the assembly, the sensor assembly comprising: a sensor of a first type configured to sense at least one of an orientation and a direction of the sensed magnetic field; a sensor of a second type configured to measure only a sign or an interval of the sensed magnetic field; and processing circuitry connected to each of the magnetic field sensors, the processing circuitry being configured to process output signals from the sensor of the first type to determine an uncorrected sensed magnetic field angle and to apply an offset angle to the uncorrected magnetic field angle dependent on a logical combination of signs of output signals from the sensors of the first and second types, wherein the uncorrected magnetic field angle has a 90 degree range and the processing circuitry is configured to apply an offset angle of one of 90, 180, 270 and 360 degrees when a logical combination of the signs of the output signals indicate the sensed magnetic field is oriented between 45 and 135 degrees, 135 and 225 degrees, 225 and 315 degrees, and 315 and 360 degrees respectively relative to the assembly.