ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,463,648, issued on Nov. 4, was assigned to TMEIC Corp. (Tokyo).

"Phase synchronization control circuit and power conversion device using the same" was invented by Daiki Mori (Chuo-ku, Japan), Masamichi Kano (Chuo-ku, Japan) and Kazunori Sanada (Chuo-ku, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A phase synchronization control circuit includes: a phase difference detector that detects a phase difference between AC voltage and an AC signal, a frequency control circuitry that generates a first frequency control value to eliminate the phase difference, a frequency limiter that limits the first frequency control value to fall within a variable limi...