US Patent Issued to NEC on March 17 for "Connection state identification system and connection state identification method" (Japanese Inventor)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,580,647, issued on March 17, was assigned to NEC Corp. (Tokyo).

"Connection state identification system and connection state identification method" was invented by Kohei Nakamura (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A connection state identification system includes an identification information addition means and an identification information acquisition means. When an inspection optical signal, which is an optical signal for inspection transmitted by a first optical communication device to a second optical communication device, is received by the second optical communication device over inter-optical communication device optical paths...