ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,561,216, issued on Feb. 24, was assigned to HITACHI LTD. (Tokyo).
"Safety device and safety method" was invented by Naohiro Ikeda (Tokyo) and Kotaro Shimamura (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "The safety device includes a plurality of arithmetic units which output an arithmetic result of input data as arithmetic data in each control period, a first comparison unit which compares information indicating the control period at a timing at which each of the plurality of arithmetic units outputs the arithmetic data, a plurality of temporary storage units which hold the arithmetic data output by the plurality of arithmetic units, a second c...