ALEXANDRIA, Va., March 17 -- United States Patent no. 12,581,574, issued on March 17, was assigned to LEEDARSON LIGHTING Co. LTD. (Zhangzhou, China).
"Lighting apparatus" was invented by Bihong Zheng (Zhangzhou, China) and Bin Zhang (Zhangzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A lighting apparatus includes a constant current generator, a voltage converter and a PWM generator. The constant current generator for generating a driving current. The current level is determined according to a dimmer signal received from the dimmer. The voltage converter converts the current level of the driving current to a voltage level. The PWM generator generates multiple PWM signals respectively to multiple ...