ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,771,362, issued on Oct. 20, was assigned to United Microelectronics Corp. (Hsinchu, Taiwan).
"Variable resistor and digital-to-analog converter" was invented by Cheng-Hung Pan (Kaohsiung City, Taiwan), Te Pin Lin (Changhua County, Taiwan) and Chien Jung Ma (Tainan City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A variable resistor and a digital-to-analog converter are provided. The variable resistor includes a main resistor, a plurality of switches, and a plurality of redundancy resistors. The switches are respectively constituted by a plurality of non-volatile memory cells. The switches are coupled to the main resistor. The redundancy resis...