ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,461,541, issued on Nov. 4, was assigned to FUJIFILM Corp. (Tokyo).

"Control device, flying object system, control method, and program" was invented by Tetsu Wada (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a control device including a processor and a memory connected to or built into the processor. The processor acquires, for a marker of which a position in a vertical direction is variable with a displacement mechanism, the position of the marker in the vertical direction detected by an optical sensor mounted on a flying object and performs control of maintaining or changing a position of the flying object in the ver...