PND repositioning detector for better navigation accuracy in a car
AssigneeQUALCOMM Incorporated
InventorLionel J. Garin
Life of this patent
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Abstract
An apparatus and method for a personal navigation apparatus comprising a personal navigation device (PND) for providing navigational guidance information. The PND may include a single-dimensional magnetic detector for sensing magnetic flux amplitudes of a magnetic field generated by a magnet. Alternatively, the PND may include a three-dimensional magnetic detector and a magnetic calibration module for determining an ambient magnetic field calibration value representing immediate surroundings of the PND.
Claims24
An in-vehicle personal navigation apparatus, the apparatus comprising a personal navigation device (PND), wherein the PND comprises:
- an interface to movably couple the PND to a mount structure comprising a magnet to generate a magnetic field;
- a processor to provide navigation data;
- an inertial sensor coupled to the processor, wherein the inertial sensor generates inertial sensor measurements to the processor;
- and
- a magnetic sensor coupled to the processor and positioned in the PND to sense the magnetic field from the mount structure, wherein the magnetic sensor provides magnetic sensor measurements to the processor.
Dependencies are inferred from the claim text.