ALEXANDRIA, Va., June 4 -- United States Patent no. 12,321,215, issued on June 3, was assigned to Huawei Technologies'Co.'Ltd.' (Shenzhen, China).

"Power management method and device" was invented by Binbin Ni (Hangzhou, China) and Dongkuang Song (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "This disclosure discloses a power management method and device, applied to power management of an electronic device. The method includes the following processing: obtaining an IMU PM execution notification before an OS runs, where the IMU PM execution notification is sent by boot firmware after the boot firmware determines, before the OS runs, that power management PM is to be performed by the IMU firmw...