Patents by Inventor Zachary D. Schottmiller

Zachary D. Schottmiller has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Clock alignment system having a dual-loop delay-locked loop
    Patent number: 10840917
    Abstract: A clock alignment system includes a first clock generator generating a first clock signal in a first clock domain and a second clock generator generating a second clock signal in a second clock domain slower than the first clock domain. A coarse delay-locked loop (DLL) generates third clock signals having corresponding phase offsets from the first clock signal, and a fine DLL generates a fourth clock signal by adjusting the phase of a selected one of the third clock signals. The second clock generator generates the second clock signal from the fourth clock signal. A phase detector compares phases of the first and second clock signals. A control circuit aligns the first and second clock signals by using the compared phases to select the third clock signal output by the coarse DLL, and control the phase adjustment by the fine DLL of this third clock signal.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: November 17, 2020
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Joseph D. Cali, Curtis M. Grens, Richard L. Harwood, Gary M. Madison, James M. Meredith, Zachary D. Schottmiller, Randall M. White