US Patent Issued to SHANGHAI BRIGHT POWER SEMICONDUCTOR on March 18 for "LED dimming method, dimming controller and system" (Chinese Inventors)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,256,472, issued on March 18, was assigned to SHANGHAI BRIGHT POWER SEMICONDUCTOR Co. LTD. (Shanghai).

"LED dimming method, dimming controller and system" was invented by Wenkai Zhao (Shanghai), Shunfa Zhang (Shanghai) and Weijia Yu (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "An LED dimming method, a dimming controller and system are disclosed. In a phase where a duty cycle of a PWM signal does not exceed a first threshold, every n periods of the PWM signal is taken as one set, taking a set as an output unit, and the duty cycle of the PWM signal is changed by incrementing or decrementing a average duty cycle by a first predetermined amount ...