ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,464,616, issued on Nov. 4, was assigned to CRM ICBG ( wuxi ) Co. ltd. (Jiangsu, China).

"PWM signal conversion circuit and method, and LED dimming system" was invented by Jun Liu (Wuxi, China), Quanqing Wu (Wuxi, China) and Guocheng Li (Wuxi, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A PWM signal conversion circuit and method, and an LED dimming system. The circuit includes: a PWM signal detection module, which outputs a first voltage corresponding to a low-level time of the PWM signal and a second voltage corresponding to a high-level time of the PWM signal; an addition module, which sums the first and second voltages to obtain a third voltag...