ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,545,278, issued on Feb. 10, was assigned to ALPS ALPINE Co. LTD. (Tokyo).

"Output sound abnormality detection apparatus" was invented by Hiroki Okada (Fukushima, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An output sound abnormality detection apparatus includes an output sound generation circuit configured to generate a first sound and a second sound, the first sound being an output target and the second sound having same content as content of the first sound; an amplifier configured to amplify and output the first sound and the second sound; a comparator configured to compare signal levels of the first sound and the second sound output from t...