US Patent Issued to JVCKENWOOD on Sept. 9 for "Digital power amplifier, speaker drive system, and speaker drive method" (Japanese Inventor)

ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,413,194, issued on Sept. 9, was assigned to JVCKENWOOD Corp. (Yokohama, Japan).

"Digital power amplifier, speaker drive system, and speaker drive method" was invented by Toshifumi Igari (Yokohama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An operational amplifier outputs a signal obtained by integrating a sum of a first audio signal that is input to an inverting input terminal and a feedback signal that is output from a power amplifier. A pulse width modulator pulse-width modulates an output of the operational amplifier to generate a PWM signal. A demodulator demodulates the PWM signal to generate a second audio signal that is supplied to a ...