US Patent Issued to Apple on March 11 for "Power supply noise reduction by current cancellation circuit" (California Inventors)

ALEXANDRIA, Va., March 12 -- United States Patent no. 12,249,909, issued on March 11, was assigned to Apple Inc. (Cupertino, Calif.).

"Power supply noise reduction by current cancellation circuit" was invented by Meei-Ling Chiang (Cupertino, Calif.), Khaled M. Alashmouny (Sunnyvale, Calif.) and Zhi Hu (San Jose, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure describes a circuit having a current source and a load circuit coupled to the current source. The current source can include a transistor electrically coupled to a voltage supply and can be configured to generate a first current with a first current rate-of-change during a time interval, where the first current can be a canc...