US Patent Issued to NIPPON TELEGRAPH AND TELEPHONE on April 22 for "Branch ratio calculation method, branch ratio calculation device and computer program" (Japanese Inventors)

ALEXANDRIA, Va., June 6 -- United States Patent no. 12,283,993, issued on April 22, was assigned to NIPPON TELEGRAPH AND TELEPHONE Corp. (Tokyo).

"Branch ratio calculation method, branch ratio calculation device and computer program" was invented by Ryo Igarashi (Musashino, Japan) and Masamichi Fujiwara (Musashino, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A branch ratio calculation method in an optical communication system constituting a tree-structured network in which a first communication device is used as a root node, a plurality of optical splitters are used as intermediate nodes, and a plurality of second communication devices are used as leaf nodes, the method including a calculation step ...