Abstract: Apparatuses, methods and systems of sensor sampling of a field are disclosed. One apparatus includes a magnetometer that includes a sensor responsive to an applied field. Embodiments of the sensor include an active device and oscillator circuitry, wherein the sensor generates an output signal having a frequency that is dependent on the applied field. The magnetometer further includes a bias reset controller for resetting a bias of the active device and a sampler for sampling the output signal. Further, a reset-rate of the resetting of the bias of the active device is high enough to influence 1/f noise generated by the active device.

Abstract: Apparatuses, methods and systems of a magnetic sensor self-characterizing its magnetic properties are disclosed. One embodiment of the magnetic sensor apparatus includes a magnetic sensor and a current source for applying a current to the magnetic sensor. The magnetic sensor apparatus further includes control circuitry configured to control the current source, and characterize a magnetic property of the magnetic sensor based on the applied current. One method of a magnetic sensor self-characterizing its magnetic properties includes applying, by the magnetic sensor, an electrical signal, and characterizing a magnetic property of the magnetic sensor based on the applied electrical signal.

Abstract: Methods, apparatuses and systems of providing control of display content on a display with a device are disclosed. One method includes establishing a fixed reference on the display. A user input is received indicating that the device is at a user selected position corresponding to the fixed reference and capturing a position of the device in order to establish a corresponding reference position. The display content on the display is determined based on measured displacement of the device relative to the established reference position.

Abstract: Inclinometer and directional field sensor readings can have gain, offset, and non-orthogonality errors, as well as reference alignment rotation errors. When a series of readings are taken by a three axis sensor with a variety of different orientations, the resulting dataset looks like a perfect hypothetical sphere in the absence of any errors; with errors as mentioned above the dataset looks like an offset, rotated, ellipsoidal quadratic surface. This invention provides a simple method of removing the above errors from a tilt reference device. A disclosed algorithm is divided into two distinct components: the ellipsoidal quadratic surface component, which covers gain, offset, and axis misalignment; and the rotation component, which covers rotation relative to a set of reference axes. The solution presented here addresses both components combined, or separated and for inclinometers, magnetometers and rate sensors.