ALEXANDRIA, Va., July 23 -- United States Patent no. 12,369,235, issued on July 22, was assigned to KAISTAR Lighting(Xiamen) Co. Ltd. (Xiamen, China).

"Light-emitting diode driving device with adjustable dimming depth" was invented by Xiao-Lei Zhu (Xiamen, China), Yuan-Yuan Lin (Xiamen, China) and Sheng-Ju Chung (Xiamen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An LED driving device with an adjustable dimming depth is provided. The LED driving device includes an LED driver and a dimming depth control circuit. The LED driver includes a dimming control circuit and a driving circuit. The dimming control circuit generates a first pulse-width modulation (PWM) signal according to a first brightness ind...