Patents by Inventor Kenji Urushiyama

Kenji Urushiyama 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).

  • Jitter detecting circuit for detecting cycle-to-cycle jitter
    Patent number: 6456109
    Abstract: A jitter detecting circuit firstly compares a target signal with a reference clock signal to see whether or not a phase difference takes place between the target signal and the reference clock signal, and, thereafter, the phase difference in each clock cycle is compared with the phase difference in the previous clock cycle for producing a detecting signal representative of cycle-to-cycle jitter when the phase difference is varied.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: September 24, 2002
    Assignee: NEC Corporation
    Inventor: Kenji Urushiyama
  • Jitter detecting circuit for detecting cycle-to-cycle jitter
    Publication number: 20010033339
    Abstract: A jitter detecting circuit firstly compares a target signal with a reference clock signal to see whether or not a phase difference takes place between the target signal and the reference clock signal, and, thereafter, the phase difference in each clock cycle is compared with the phase difference in the previous clock cycle for producing a detecting signal representative of cycle-to-cycle jitter when the phase difference is varied.
    Type: Application
    Filed: April 17, 2001
    Publication date: October 25, 2001
    Applicant: NEC Corporation.
    Inventor: Kenji Urushiyama