ALEXANDRIA, Va., June 17 -- United States Patent no. 12,313,721, issued on May 27.
"Motion detection using communication channel carrier signal" was invented by Brent De Graaf (Wake Forest, N.C.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for motion detection using a communication channel carrier signal. In one aspect, a method includes, for each of one or more motion detection processors, performing operations comprising: for each of one or more communication channels, wherein each communication channel has a center frequency that is different from the center frequency of each other communication channel: d...