Patent ID: 11965944
Assignee: APPLE INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 5:
6. A receiver of a magnetic tracking system, the receiver comprising:
one or more inertial sensors;
a direct current (DC) magnetometer;
an alternate current (AC) magnetometer configured to sense an AC magnetic field emitted by a transmitter;
a wireless transceiver;
one or more processors;
memory coupled to the one or more processors and storing instructions that when executed by the one or more processors, cause the one or more processors to perform operations comprising:
determining, using output from the one or more inertial sensors and DC magnetometer, an attitude of the receiver;
obtaining, using the wireless transceiver, an attitude of the transmitter and a clock sync signal; and
computing a position and relative attitude of the transmitter with respect to the receiver using the sensed magnetic field, the receiver attitude, the transmitter attitude and the clock sync signal.