ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,431,823, issued on Sept. 30, was assigned to Murata Machinery Ltd. (Kyoto, Japan).
"Displacement detection device" was invented by Tetsuya Shimizu (Kyoto, Japan), Kentaro Otomo (Kyoto, Japan) and Ryohei Kido (Kyoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A displacement detection device includes a detection signal processor including a first differential amplifier a to output a first AC signal acquired by synthesizing a cosine function and a minus cosine function, a second differential amplifier to output a second AC signal acquired by synthesizing a sine function and a minus sine function, and a processor to determine, at least at a start...