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Evan Lojewski

Sylvain Grosjean

Alexandre Deschildre

Jérémy Schlachter

Mark Jakusovszky

Lorenzo Pierobon

Brian Moore

A method for tracking a position of an optical computer mouse based on determining a spatial displacement between image frames. A respective image frame is considered as an anchor frame if the respective image frame comes first in a sequence of image frames or the distance of the respective image frame to its immediately previous anchor frame is equal to or greater than a displacement threshold, and the respective image is considered as an intermediate frame if its distance to its immediately previous anchor frame is below the displacement threshold. Only anchor frames are stored in memory and used for future displacement measurements between image frames captured by the mouse.

Method for tracking an optical mouse by way of frame anchoring

A method of determining an absolute angle of a magnetic field includes receiving a first digital measurement value Bx of a first magnetic field component indicating intensity of the magnetic field along a first axis; receiving a second digital measurement value Bz of a second magnetic field component indicating the intensity of the magnetic field along a second axis, orthogonal to the first axis; determining absolute values for the first and second magnetic field components; and determining the angle of the magnetic field with respect to the first or second axis. The angle is determined so that the angle is derivable from the value of arcsin of Bz or of its approximation, when the absolute value of Bz&#x2264; the absolute value of Bx, and derivable from the value of arccos of Bx or of its approximation, when the absolute value of Bz&#x3e; the absolute value of Bx.

Method of determining an absolute angle of a magnetic field

The present invention relates to a method, to a computer program and to a system to establish wireless communication between at least two Bluetooth Low Energy (BLE) devices the method comprising the steps of:

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Woodland Park, CO, United States of America

Evan Lojewski