ALEXANDRIA, Va., June 9 -- United States Patent no. 12,651,630, issued on June 9, was assigned to Taiwan Semiconductor Manufacturing Co. Ltd. (Hsinchu, Taiwan).

"Tracking scheme circuit of memory device and methods for operating the same" was invented by Chun-Ying Lee (Hsinchu City, Taiwan), Chieh Lee (Hsinchu City, Taiwan), Tung-Cheng Chang (Hsinchu City, Taiwan), Yen-Hsiang Huang (Hsinchu City, Taiwan) and Chia-En Huang (Hsinchu City, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A memory device comprises a memory array, a plurality of access word lines, and a first tracking word line. The memory array may include a plurality of bit cells arranged over a plurality of rows and a plurality of columns...