ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,494,731, issued on Dec. 9, was assigned to Shanghai Ruking Intelligent Control Technologies Co. Ltd (Shanghai).
"Circuit and method for driving SPIM" was invented by Zhanjun Liu (Shanghai) and Shaocai Ma (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "A circuit and a method for driving a SPIM are provide. The circuit comprises a driver and an alternating-current unit. The driver comprises a rectifying unit, a direct-current bus, a first inverter unit and a second inverter unit. The rectifying unit is connected to the direct-current bus, and the direct-current bus is respectively connected to the first inverter unit and the second inverter unit. ...