ALEXANDRIA, Va., May 26 -- United States Patent no. 12,640,593, issued on May 26, was assigned to Infineon Technologies Americas Corp. (El Segundo, Calif.).

"Wake-up receiver" was invented by Darshan Bhaskar Shetty (Graz, Austria), Christoph Steffan (Marchtrenk, Austria) and Gerald Holweg (Graz, Austria).

According to the abstract* released by the U.S. Patent & Trademark Office: "One or more devices, systems, and/or methods are provided. In an example of the techniques presented herein, a wake-up receiver includes a power management unit configured to receive a supply voltage generated from an input signal and generate a current reference. An envelope detector is configured to generate a signal corresponding to transitions in the input si...