ALEXANDRIA, Va., June 17 -- United States Patent no. 12,316,359, issued on May 27, was assigned to Canon K.K. (Tokyo).

"Communication system and communication apparatus" was invented by Masaru Tomabechi (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A communication system includes a transmission unit configured to output a signal, an attenuation unit configured to attenuate the signal output from the transmission unit, a first coupler having one end portion being connected to the transmission unit via the attenuation unit, a termination unit that is connected to the other end portion of the first coupler, and a second coupler configured to input a signal to the first coupler using at least o...