ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,444,474, issued on Oct. 14, was assigned to Apple Inc. (Cupertino, Calif.).
"Voltage ramp memory calibration" was invented by Robert E. Jeter (Santa Clara, Calif.), Jingkui Zheng (Sunnyvale, Calif.) and Srinivasa Rao Masanam (Cedar Park, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus for performing memory calibrations during a performance state change is disclosed. A memory controller is configured to convey a clock signal to a memory and includes a calibration control circuit configured to perform a plurality of calibrations of the clock signal during a change from a first one to a second one of a plurality of performance states, and...