ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,738,934, issued on Sept. 15, was assigned to Cirrus Logic Inc. (Austin, Texas).

"Switching drivers" was invented by Eric J. King (Austin, Texas) and John L. Melanson (Austin, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "This application relates to methods and apparatus for controlling a switching driver to drive a load with a drive signal based on an input signal. A controller is configured to control modulation of at least one driver output node between selected switching voltages of a set of at least four different switching voltages to generate the drive signal. The output node is modulated according to a switching pattern and the controller...