ALEXANDRIA, Va., March 31 -- United States Patent no. 12,593,158, issued on March 31, was assigned to Merry Electronics (Shenzhen) Co. Ltd. (ShenZhen, China).
"Listening device" was invented by Yi-Po Liu (Taichung, Taiwan), Chien-Cheng Tseng (Taichung, Taiwan) and Hun-Yun Tsai (Taichung, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A listening device includes a housing and a circuit board assembly. The housing includes at least one sound outlet. The circuit board assembly is disposed on the housing and includes a microphone, a proximity sensing chip, and a proximity sensing pattern. The microphone and the proximity sensing chip are close to each other and are disposed in a first area of the circuit ...