ALEXANDRIA, Va., April 9 -- United States Patent no. 12,270,643, issued on April 8, was assigned to Allegro MicroSystems LLC (Manchester, N.H.).
"Angle sensing having offset and amplitude correction of orthogonal signals using zero crossing detection" was invented by Mohammed Safiuddin (Manchester, N.H.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and apparatus for determining signal offset correction signals. In embodiments, first and second magnetic field sensing elements generate first and second channels that are in quadrature. Signal correction processing includes storing amplitudes of the first and second channel signals when an amplitude of the channel signals cross zero and determine an off...