ALEXANDRIA, Va., July 16 -- United States Patent no. 12,669,602, issued on June 30, was assigned to INVENSENSE INC (San Jose, Calif.).
"Method and system for classifying state of a wearable device" was invented by Joe Youssef (Noyarey, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and systems are disclosed for employing an ultrasonic sensor to classify the state of a wearable device. Ultrasonic pulses are emitted from a pair of ultrasonic transducers. The pair of ultrasonic transducers are in a line of sight relationship when the user is in a first state with respect to the wearable device and are not in a line of sight relationship when the user is in a second state with respect to the weara...