ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,384,657, issued on Aug. 12, was assigned to Hong Kong Productivity Council (Kowloon, Hong Kong).
"Contactless elevator control system and method" was invented by Lawrence Chi-Kin Poon (Kowloon, Hong Kong), Edmond Chung-Man Chan (Kowloon, Hong Kong) and Cheuk-Ming Yip (Kowloon, Hong Kong).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a contactless elevator control system and method. The system comprises an infrared touch sensor, a relay control device and an elevator button control device, wherein: the infrared touch sensor emits an array of multiple infrared beams, receives reflected infrared beams, calculates a vertical a...