Microsoft Technology Licensing, LLC

Immersion Networks, Inc.

Michael Jordon Felice

Sergio Paolantonio

Karim Audrey Luccin

Marcus Philip Ghaly

Andrei Andreevich Borodin

Brandon Richard Berk

Brian Zhian Bassir

A method for stabilizing a magnetic field of an inertial measurement unit (IMU), is provided that includes initializing accelerometer and gyroscope (AG) heading data for the IMU and initializing accelerometer, gyroscope and magnetometer (AGM) heading data for the IMU. Determining whether a tracking state exists and completing processing of the AG heading data and the AGM heading data if the tracking state does not exist. Calculating a magnetic field error if the tracking state exists.

Systems and methods for stabilizing magnetic field of inertial measurement unit

A method of presenting visual information to a user includes acquiring a first surface mesh relative to the user, acquiring a second surface mesh relative to the user, assigning a first physics layer to the first surface mesh, assigning a second physics layer to the second surface mesh, and prioritizing the first physics layer over the second physics layer independent of a relative position of the first physics layer and the second physics layer in a shared environment for interactions with a first object associated with the first surface mesh and a second object associated with the second surface mesh.

Systems and methods of physics layer prioritization in virtual environments

A system, comprising a clock generating a timing signal, a magnetometer coupled to the clock and configured to receive the timing signal and to generate first heading data and a gyroscope coupled to the clock and configured to receive the timing signal and to generate second heading data. The system further includes a first adder coupled to the magnetometer and gyroscope and configured to determine a difference signal as a function of the first heading data and the second heading data and a constrain data system coupled to the first adder and configured to apply a limit to the difference signal. A combine delta system is coupled to the constrain data system and configured to combine two or more of the constrained data values to generate a combined delta signal, and a second adder coupled to the gyroscope and the combine delta system and configured to add the combined delta signal to the second heading data.

Inertial measurement unit management with reduced rotational drift

A technique is described herein for determining the position of at least one previously-placed physical marker in a physical environment. In one approach, the technique detects the marker at plural vantage points in the environment, to yield plural instances of marker information. The technique then computes the position of the marker based on the plural instances of marker information collected at the plural vantage points. The technique may also provide a movement indicator that assists the user in moving to specified vantage points in the physical environment. The technique may use the identified position(s) of the marker(s) to accurately place virtual objects relative to real-world objects in a modified-reality world.

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Michael Jordon Felice