US Patent Issued to Advanced Micro Devices on Jan. 13 for "Three-stage differential ring oscillator generating differential in-phase and quadrature-phase clocks" (Massachusetts, Texas Inventors)

ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,525,964, issued on Jan. 13, was assigned to Advanced Micro Devices Inc. (Santa Clara, Calif.).

"Three-stage differential ring oscillator generating differential in-phase and quadrature-phase clocks" was invented by Thomas H. Likens (Austin, Texas) and Gerald R. Talbot (Concord, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A three-stage differential ring oscillator circuit has a first differential stage, a second differential stage, and a third differential stage and generates six phases (two in each stage) used to form differential in-phase and quadrature-phase clock signals. A cross coupled inverter pair couples the first stage output signals. ...