ALEXANDRIA, Va., July 23 -- United States Patent no. 12,368,515, issued on July 22, was assigned to PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA (Torrance, Calif.).

"Transmission method, reception method, transmission device, and reception device" was invented by Yutaka Murakami (Kanagawa, Japan), Nobuhiko Hashida (Osaka, Japan) and Ryutaro Monden (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A transmission method includes: in a first period, causing a light source to emit light having a first luminance; and in a second period, causing the light source to transmit an optical signal by causing the light source to alternately emit light having a second luminance and light having a thir...