ALEXANDRIA, Va., March 26 -- United States Patent no. 12,257,948, issued on March 25, was assigned to Rohm Co. Ltd. (Kyoto, Japan).
"Lamp control device" was invented by Masaaki Nakayama (Kyoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A lamp control device includes: an output; a comparator; and a first setter configured to set the voltage fed to a first input terminal of the comparator to a second voltage that depends on a first voltage or to a third voltage that depends on a first current, in which the output terminal is connected to a second input terminal of the comparator, the output terminal is configured to be connectable to the lamp via a switch, the output terminal is configured to be co...