Calibration of magnetic and optical sensors in a virtual reality or augmented reality display system
AssigneeMagic Leap, Inc.
InventorsMichael Woods, Scott David Nortman
Life of this patent
Estimating the term…
Abstract
A system for calibrating alignment of two or more types of magnetic sensors in a virtual reality (VR) or augmented reality (AR) display device. The system can include a controller, a waveform generator, a magnetic field generating unit, and an electrical driver. The controller can cause the waveform generator to generate a first calibration waveform to calibrate a first type of magnetic sensor in the display device, and to generate a second calibration waveform to calibrate a second type of magnetic sensor in the display device.
Claims14
A system for calibrating alignment of two or more magnetic sensors in a virtual reality (VR) or augmented reality (AR) display device, the system comprising:
- a controller;
- a waveform generator configured to generate a first calibration waveform and a second calibration waveform under control of the controller;
- a magnetic field generating unit;
- and
- an electrical driver connected to the waveform generator to receive the first and second calibration waveforms, to generate corresponding first and second electrical output currents, and to provide the first and second electrical output currents to the magnetic field generating unit,
- wherein the controller is configured to cause the waveform generator to generate the first calibration waveform to calibrate a first type of magnetic sensor in the display device, and to generate the second calibration waveform to calibrate a second type of magnetic sensor in the display device.
Dependencies are inferred from the claim text.