ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,216,203, issued on Feb. 4, was assigned to DENSO Corp. (Kariya, Japan).
"Object detection device" was invented by Yu Koyama (Nisshin, Japan) and Kohei Kozuki (Kariya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An object detection device includes a transceiver that transmits ultrasonic waves encoded with frequency modulation and receives an ultrasonic wave and outputs a reception signal, a first quadrature detector that generates and outputs a complex reception signal based on quadrature detection of the reception signal, a second quadrature detector that generates and outputs a complex reference signal based on quadrature detection of the refer...