ALEXANDRIA, Va., March 26 -- United States Patent no. 12,262,455, issued on March 25, was assigned to SIGNIFY HOLDING B.V. (Eindhoven, Netherlands).
"LED driver circuit" was invented by Theo Gerrit Zijlman (Tilburg, Netherlands), Henricus Marius Joseph Maria Kahlman (Dongen, Netherlands) and Bertrand Johan Edward Hontele (Breda, Netherlands).
According to the abstract* released by the U.S. Patent & Trademark Office: "A LED driver circuit uses a first current source circuit to set an output current, controlled by pulse width modulation and a second current source circuit for charging a storage capacitor. A compensating arrangement is used for increasing the current delivered by the second current source circuit during off period times of t...