ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,947, issued on Feb. 17, was assigned to International Business Machines Corp. (Armonk, N.Y.).
"Clock glitch detector" was invented by Matthew James Paschal (Rochester, Minn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments herein describe a glitch detector circuit (and method of operation) for detecting glitches in a clock signal. In one embodiment, the glitch detector includes a shift register that samples the reference clock using a clock signal output by a PLL. The value in a first memory element of the shift register can be sampled to previous values that were stored (and then bit shifted) in the shift register. If there is a mismatch,...