ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,463,852, issued on Nov. 4, was assigned to SEIKO EPSON Corp. (Japan).
"Semiconductor device and electronic apparatus" was invented by Takao Katayama (Matsumoto, Japan), Akihiro Fukuzawa (Hino, Japan), Fumihito Baisho (Kai, Japan) and Tsutomu Nonaka (Hino, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a semiconductor device including: a first modulation circuit configured to receive a first sound source signal, sigma-delta modulate a signal based on the first sound source signal, and output a first sigma-delta modulated signal; a second modulation circuit configured to pulse-width modulate a signal based on the first sigma-delta modulat...