ALEXANDRIA, Va., June 4 -- United States Patent no. 12,323,764, issued on June 3, was assigned to Huawei Technologies'Co.'Ltd.' (Shenzhen, China).
"Laser microphone and terminal" was invented by Xiaoke Hou (Dongguan, China), Shixiong Zhang (Dongguan, China) and Shengjie Ruan (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The technology of this application relates to a laser microphone, including a diaphragm, a laser device, a control circuit, a self-mixing signal obtaining apparatus, and a signal processing circuit. The laser device is configured to emit light to the diaphragm and receive a feedback light signal from the diaphragm, and the feedback light signal interferes with laser in a res...