ALEXANDRIA, Va., March 19 -- United States Patent no. 12,251,214, issued on March 18, was assigned to DP Technologies Inc. (Scotts Valley, Calif.).

"Sleep detection and analysis system" was invented by Philippe Richard Kahn (Santa Cruz, Calif.), Arthur Kinsolving (Santa Cruz, Calif.), Mark Andrew Christensen (Santa Cruz, Calif.), Venkat Easwar (Los Gatos, Calif.) and Andrew Cotton-Clay (Santa Cruz, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of detecting the presence of a person on a bed comprising, receiving movement data in pseudo-real-time, extracting features from the movement data for a time period in pseudo-real-time, recording the user's on-bed and off-bed time segments, and determi...