US Patent Issued to ROHM on March 25 for "Motor driver circuit for linear motor, positioning device using the same, and hard disk device" (Japanese Inventor)

ALEXANDRIA, Va., March 26 -- United States Patent no. 12,261,563, issued on March 25, was assigned to ROHM Co. LTD. (Kyoto, Japan).

"Motor driver circuit for linear motor, positioning device using the same, and hard disk device" was invented by Hisashi Sugie (Kyoto, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed herein is a motor driver circuit including a logic circuit that generates a second code which changes linearly with a slope "a" with respect to a first code based on a position command for a linear motor to be driven and that can switch the slope "a," a D/A converter that converts the second code into an analog control signal, and a driver that drives the linear motor such that a curr...