ALEXANDRIA, Va., July 15 -- United States Patent no. 12,664,636, issued on June 23.
"System for executing safety inspection and maintenance of outdoor billboard by using drone" was invented by Byung Chul Kim (Paju-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention discloses a system for executing safety inspection and maintenance of an outdoor billboard by using a drone, which includes a drone (110) including an optical camera (111) and an infrared camera (112), and flying over a sky around a building in which the outdoor billboard is installed, and taking images of the outdoor billboard and a connection bracket (20) with the building; a monitoring unit (120) monitoring an i...