ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,483,346, issued on Nov. 25, was assigned to HMN Technologies Co. Ltd. (Tianjin, China).

"Data secrecy method for submarine cable system with failure and submarine cable system" was invented by Xiaoyong Qin (Tianjin, China), Li Yang (Tianjin, China) and Jianping Li (Tianjin, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present application discloses a data secrecy method for a submarine cable system with a failure and a submarine cable system. The method includes: determining a first disaster tolerance set in response to that a failure occurs to a first branch; and replacing a target optical signal in a first optical signal with a virtual opti...