Back to results
US 2023/0401743 A1Published application
Systems and methods for augmented reality
AssigneeMagic Leap, Inc.
InventorsMichael Janusz WOODS, Andrew RABINOVICH
Life of this patent
Estimating the term…
Abstract
Systems and methods for reducing error from noisy data received from a high frequency sensor by fusing received input with data received from a low frequency sensor by collecting a first set of dynamic inputs from the high frequency sensor, collecting a correction input point from the low frequency sensor, and adjusting a propagation path of a second set of dynamic inputs from the high frequency sensor based on the correction input point either by full translation to the correction input point or dampened approach towards the correction input point.
Claims15
A visualization system comprising:
- a Helmholtz coil pair;
- a current control system to activate current through the Helmholtz coil pair in an alternating manner between current at a direct current level and current at an alternating current level;
- a magnetometer component positioned relative to the Helmholtz coil pair to produce a directly-readable output when the Helmholtz coil pair is activated at the direct current level;
- an electromagnetic localization receiver coil positioned relative to the Helmholtz coil pair to produce a directly-readable output when the Helmholtz coil pair is activated at the alternating current level;
- and
- a calibration system connected to the magnetometer component and the electromagnetic localization receiver coil and operable to characterize an orientation of the magnetometer component and the electromagnetic localization receiver coil relative to one another based on the directly readable outputs from the magnetometer component and the electromagnetic localization receiver coil.
3 more elements
A visualization system comprising:
- a head-mounted component;
- a Helmholtz coil pair;
- a current control system to activate current through the Helmholtz coil pair in an alternating manner between current at a direct current level and current at an alternating current level;
- a magnetometer component mounted to the head-mounted component and positioned relative to the Helmholtz coil pair to produce a directly-readable output when the Helmholtz coil pair is activated at the direct current level;
- an electromagnetic localization receiver coil mounted to the head-mounted component and positioned relative to the Helmholtz coil pair to produce a directly-readable output when the Helmholtz coil pair is activated at the alternating current level;
- a calibration system connected to the magnetometer component and the electromagnetic localization receiver coil and operable to characterize an orientation of the magnetometer component and the electromagnetic localization receiver coil relative to one another based on the directly readable outputs from the magnetometer component and the electromagnetic localization receiver coil, wherein the calibration system characterizes the orientation of the magnetometer component and the electromagnetic localization receiver coil relative to one another based on an assumption that an orientation of an electromagnetic field created by the Helmholtz coil pair remains the same when switching between the current at the direct current level and the current at the alternating current level;
- an electromagnetic head-mounted component reorientation device connected between the head-mounted component and the Helmholtz coil pair and operable to reorient the head-mounted component relative to the Helmholtz coil pair.
4 more elements
A visualization method comprising:
- activating current through a Helmholtz coil pair in an alternating manner between current at a direct current level and current at an alternating current level;
- producing a directly-readable output from a magnetometer component positioned relative to the Helmholtz coil pair when the Helmholtz coil pair is activated at the direct current level;
- producing a directly-readable output from an electromagnetic localization receiver coil positioned relative to the Helmholtz coil pair when the Helmholtz coil pair is activated at the alternating current level;
- and
- characterizing an orientation of the magnetometer component and the electromagnetic localization receiver coil relative to one another based on the directly readable outputs from the magnetometer component and the electromagnetic localization receiver coil.
2 more elements
Dependencies are inferred from the claim text.