Patents by Inventor Liman Fu

Liman Fu 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).

  • Apparatus and method for reducing jitter in periodic signals
    Patent number: 9184908
    Abstract: The present invention provides an apparatus and method for reducing jitter in a periodic signal. The apparatus comprises: a frequency discriminator configured to receive the periodic signal and feedback of an output signal of the apparatus and calculate an estimate value for a length of a current period of the periodic signal; a phase discriminator configured to receive the periodic signal and determine an adjustment factor for the length of the current period of an input signal according to the input signal in a previous period of the periodic signal and the output signal in the previous period of the apparatus; and an adjustor configured to determine the period length of the output signal in the current period according to the estimate value for the length of the current period and the adjustment factor for the length of the current period.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: November 10, 2015
    Assignee: iWatt Integrated Circuits Technology (Tianjin) Limited
    Inventors: Liman Fu, Nailong Wang
  • Apparatus and Method for Reducing Jitter in Periodic Signals
    Publication number: 20140161216
    Abstract: The present invention provides an apparatus and method for reducing jitter in a periodic signal. The apparatus comprises: a frequency discriminator configured to receive the periodic signal and feedback of an output signal of the apparatus and calculate an estimate value for a length of a current period of the periodic signal; a phase discriminator configured to receive the periodic signal and determine an adjustment factor for the length of the current period of an input signal according to the input signal in a previous period of the periodic signal and the output signal in the previous period of the apparatus; and an adjustor configured to determine the period length of the output signal in the current period according to the estimate value for the length of the current period and the adjustment factor for the length of the current period.
    Type: Application
    Filed: December 4, 2013
    Publication date: June 12, 2014
    Applicant: iWatt Integrated Circuits Technology (Tianjin) Limited
    Inventors: Liman Fu, Nailong Wang