ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,504,321, issued on Dec. 23, was assigned to NTT Inc. (Tokyo).
"Overhead optical cable test system and method" was invented by Tatsuya Okamoto (Tokyo), Daisuke Iida (Tokyo), Yusuke Koshikiya (Tokyo) and Nazuki Honda (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A cable test system, an analysis apparatus, a cable test method, and a program are capable of recognizing a sag section of an overhead cable without sending a worker to a site. In some implementations, the cable test system includes an optical fiber vibration distribution measurement apparatus that acquires a vibration distribution waveform of an overhead optical fiber cable to be tested. ...