ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,426,139, issued on Sept. 23, was assigned to Apple Inc. (Cupertino, Calif.).
"Feedback control of a diode element" was invented by Thomas C. Greening (San Jose, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Configurations for a light source unit and driver circuit and methods thereof are disclosed. The light source unit may include the driver circuit, a power source, a light source, an optical splitter, and a controller. The driver circuit may include an anti-logarithmic pulse width modulated circuit that provides a signal to a switching converter. In some embodiments, the anti-logarithmic pulse width modulated circuit includes a digital-to-ana...