ALEXANDRIA, Va., May 26 -- United States Patent no. 12,640,968, issued on May 26, was assigned to Cirrus Logic Inc. (Austin, Texas).

"Modulator circuits" was invented by John P. Lesso (Edinburgh, Great Britain) and Michael Robinson (Edinburgh, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "This application relates to methods and apparatus for outputting a modulated signal for driving a switching output stage. A modulator circuit includes a digital modulator that receives an input signal modified by a correction signal and outputs the modulated signal. A feedback node receives a feedback signal of the output of the switching output stage and a first filter receives and filters an inverted versio...