ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,500,591, issued on Dec. 16, was assigned to HANGZHOU GEO-CHIP TECHNOLOGY Co. LTD. (Hangzhou, China).

"Fast-locking phase-locked loop, frequency divider, and communication device" was invented by Yanping Zhou (Hangzhou, China), Chun Geik Tan (San Diego) and Ruili Wu (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a phase-locked loop, a frequency divider and a communication device that enable fast locking. The phase-locked loop comprises a phase frequency detector, a charge pump, a loop filter, a voltage-controlled oscillator, a fast-locking control unit and a frequency divider, wherein the frequency divider...