ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,771,469, issued on Oct. 20, was assigned to NEC Corp. (Tokyo).

"Optical transmission system and optical transmission method" was invented by Takeshi Takemura (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical transmission system that includes a first optical device including a first optical signal adjustment unit that adjust light intensity of an input light signal for each wavelength, and a first control unit that controls the first optical signal adjustment unit; and a second optical device including a second control unit. The second control unit sends, to the first control unit, transmitted light information being information relating t...