ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,424,820, issued on Sept. 23, was assigned to Rohm Co. Ltd. (Kyoto, Japan).
"Laser diode driving circuit" was invented by Yusuke Nakakohara (Kyoto, Japan) and Tan Nhat Hoang (Kyoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A laser diode driving circuit includes a switching element, a controller configured to turn on an off the switching element, a second series circuit connected in parallel with a first series circuit including a laser diode, and a capacitor. The second series circuit includes a rectifying element and a current limiter configured to limit a current passing through the rectifying element, and is connected in parallel with the...