ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,452,975, issued on Oct. 21, was assigned to Monolithic Power Systems Inc. (Kirkland, Wash.).

"LED driving circuit and method for controlling a current distribution to an LED string" was invented by Chia-Lung Ni (New Taipei, Taiwan), Zheng Luo (San Jose, Calif.), Yu-Huei Lee (New Taipei, Taiwan) and Junjian Zhao (San Jose, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "LED driving circuit includes a first current source, a second current source, a current sensing circuit, and a control circuit. The first current source, coupled in series with a heat dissipation resistor, provides a first current path to the LED string. The second current source, c...