US Patent Issued to Seagate Technology on Aug. 4 for "Write current undershoot for a heat-assisted magnetic storage device" (Minnesota Inventors)

ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,700,422, issued on Aug. 4, was assigned to Seagate Technology LLC (Fremont, Calif.).

"Write current undershoot for a heat-assisted magnetic storage device" was invented by Yanzhang Liu (Eden Prairie, Minn.), Zhen Wei (Maple Grove, Minn.), Jianhua Xue (Maple Grove, Minn.), Olle Gunnar Heinonen (Eden Prairie, Minn.) and Michael Allen Seigler (Eden Prairie, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus includes a write head. A preamplifier is coupled to the write head. A controller is coupled to the preamplifier and configured to cause the preamplifier to apply an overshoot current to the write head for a predefined overshoot current dur...