ALEXANDRIA, Va., March 12 -- United States Patent no. 12,249,988, issued on March 11, was assigned to Altera Corp. (San Jose, Calif.).

"Circuits and methods for detecting decreases in a supply voltage in an integrated circuit" was invented by Ping-Chen Liu (Fremont, Calif.), Guang Chen (Fremont, Calif.) and Venu Kondapalli (San Jose, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An integrated circuit includes a first voltage decrease detection circuit that has a first comparator circuit that compares a supply voltage in the integrated circuit to a threshold voltage to generate a first detection signal that indicates a decrease in the supply voltage, and a first timestamp storage circuit that stores a...