ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,455,310, issued on Oct. 28, was assigned to TOYOTA JIDOSHA K.K. (Toyota, Japan).

"Fault detection circuit" was invented by Hiroyuki Iyama (Okazaki, Japan) and Yu Sasaki (Kashiwa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fault detection circuit according to the present disclosure includes a rectangular pulse comparison circuit configured to generate, for each combination of the pulse width modulated signals, detection signals each indicating a difference component between pulse widths of two pulse width modulated signals having phases adjacent to each other, and a fault diagnosis unit configured to detect a fault in an inverter based on a s...