ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,460,915, issued on Nov. 4, was assigned to RENESAS ELECTRONICS Corp. (Tokyo).
"Angle error correction device" was invented by Masashi Tsubota (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An angle error correction device includes an actual rotation angle measurement circuit that converts a rotation angle information of a rotation angle detection target to an angle counter value for each predetermined angle; an actual speed calculator that calculates an actual rotation speed for each predetermined angle from the angle counter value; a curve interpolation circuit that generates a curve interpolation equation from the angle counter value; an ideal s...