ALEXANDRIA, Va., June 12 -- United States Patent no. 12,302,464, issued on May 13.
"Light emitting diode control circuitry" was invented by Dong Yang (Milpitas, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Aspects of the present disclosure are directed to systems and methods for controlling light emitting diodes (LEDs) in an electronic device, such as an artificial reality (XR) head-mounted display (HMD) or other XR device in an XR system. In an XR HMD, the LEDs can be positioned proximate to and/or facing the eyes and/or face of a user to illuminate such features for movement tracking and other purposes. Implementations can provide LED control circuitry that can continuously monitor the output curr...