Patents by Inventor Vahid M. Naraghi

Vahid M. Naraghi 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).

  • Patent number: 11973582
    Abstract: Systems, circuits, and methods for synchronizing devices in the time-domain are provided. A method, according to one implementation, includes determining a round-trip number based on a width of one cycle of a timestamping clock signal. The round-trip number is equal to a plurality of times that a clock signal is to be transmitted in a loop from a timing-leader component to a timing-follower component and back to the timing-leader component. The method also includes utilizing the timestamping clock signal to detect a cumulative time delay that results when the clock signal is transmitted in the loop a number of times equal to the round-trip number. The cumulative time delay is configured to enable synchronization of the timing-follower component with the timing-leader component.
    Type: Grant
    Filed: April 13, 2021
    Date of Patent: April 30, 2024
    Assignee: Ciena Corporation
    Inventors: Xiaojin Liu, Kelly Donald Fromm, Daniel Lee, Vahid M. Naraghi
  • Publication number: 20220329339
    Abstract: Systems, circuits, and methods for synchronizing devices in the time-domain are provided. A method, according to one implementation, includes determining a round-trip number based on a width of one cycle of a timestamping clock signal. The round-trip number is equal to a plurality of times that a clock signal is to be transmitted in a loop from a timing-leader component to a timing-follower component and back to the timing-leader component. The method also includes utilizing the timestamping clock signal to detect a cumulative time delay that results when the clock signal is transmitted in the loop a number of times equal to the round-trip number. The cumulative time delay is configured to enable synchronization of the timing-follower component with the timing-leader component.
    Type: Application
    Filed: April 13, 2021
    Publication date: October 13, 2022
    Inventors: Xiaojin Liu, Kelly Donald Fromm, Daniel Lee, Vahid M. Naraghi