Patents by Inventor Lifang Ge

Lifang Ge 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).

  • Adjustable impedance circuit and impedance setting method for providing differential-mode impedance matching and common-mode impedance matching
    Patent number: 8896343
    Abstract: An adjustable impedance circuit includes a calibration module, an impedance module, a first switch module and a second switch module. The calibration module is arranged to generate a calibration signal. The impedance module has a plurality of impedance elements. The first switch module is coupled to the calibration module, and is arranged to receive the calibration signal and make a first portion of the impedance elements be selectively coupled between a differential input port and at least one reference voltage according to the calibration signal. The second switch module is coupled to a common-mode voltage output node, and is arranged to receive a control signal and make a second portion of the impedance elements be selectively coupled between the common-mode voltage output node and the differential input port according to the control signal.
    Type: Grant
    Filed: August 25, 2013
    Date of Patent: November 25, 2014
    Assignee: Realtek Semiconductor Corp.
    Inventor: Lifang Ge
  • ADJUSTABLE IMPEDANCE CIRCUIT AND IMPEDANCE SETTING METHOD FOR PROVIDING DIFFERENTIAL-MODE IMPEDANCE MATCHING AND COMMON-MODE IMPEDANCE MATCHING
    Publication number: 20140070842
    Abstract: An adjustable impedance circuit includes a calibration module, an impedance module, a first switch module and a second switch module. The calibration module is arranged to generate a calibration signal. The impedance module has a plurality of impedance elements. The first switch module is coupled to the calibration module, and is arranged to receive the calibration signal and make a first portion of the impedance elements be selectively coupled between a differential input port and at least one reference voltage according to the calibration signal. The second switch module is coupled to a common-mode voltage output node, and is arranged to receive a control signal and make a second portion of the impedance elements be selectively coupled between the common-mode voltage output node and the differential input port according to the control signal.
    Type: Application
    Filed: August 25, 2013
    Publication date: March 13, 2014
    Applicant: Realtek Semiconductor Corp.
    Inventor: Lifang Ge